Working with PDF Forms
26 Apr 202224 minutes to read
An interactive form, sometimes referred to as an AcroForm is a collection of fields for gathering information. A PDF document can contain any number of fields appearing on any combination of pages, all of that make a single, globally interactive form spanning the entire document.
Creating a new PDF form
Essential PDF allows you to create and manage the form (AcroForm) in PDF document by using PdfForm class. The PdfFormFieldCollection class represents the entire field collection of the form.
Adding the text box field
PdfTextBoxField class is used to create a text box field in PDF forms.
The below code snippet illustrates how to add a textbox field to a new PDF document.
//Create a new PDF document.
PdfDocument document = new PdfDocument();
//Add a new page to the PDF document.
PdfPage page = document.Pages.Add();
//Create a textbox field and add the properties.
PdfTextBoxField textBoxField = new PdfTextBoxField(page, "FirstName");
textBoxField.Bounds = new RectangleF(0, 0, 100, 20);
textBoxField.ToolTip = "First Name";
//Add the form field to the document.
document.Form.Fields.Add(textBoxField);
//Save the document.
document.Save("Form.pdf");
//close the document
document.Close(true);'Create a new PDF document.
Dim document As PdfDocument = New PdfDocument()
'Add a new page to the PDF document.
Dim page As PdfPage = document.Pages.Add()
'Create a textbox field and add the properties.
Dim textBoxField As PdfTextBoxField = New PdfTextBoxField(page, "FirstName")
textBoxField.Bounds = New RectangleF(0, 0, 100, 20)
textBoxField.ToolTip = "First Name"
'Add the form field to the document.
document.Form.Fields.Add(textBoxField)
'Save the document.
document.Save("Form.pdf")
'close the document
document.Close(True)//Create a new PDF document.
PdfDocument document = new PdfDocument();
//Add a new page to the PDF document.
PdfPage page = document.Pages.Add();
//Create a textbox field and add the properties.
PdfTextBoxField textBoxField = new PdfTextBoxField(page, "FirstName");
textBoxField.Bounds = new RectangleF(0, 0, 100, 20);
textBoxField.ToolTip = "First Name";
//Add the form field to the document.
document.Form.Fields.Add(textBoxField);
//Save the PDF document to stream.
MemoryStream stream = new MemoryStream();
await document.SaveAsync(stream);
//Close the document.
document.Close(true);
//Save the stream as PDF document file in local machine. Refer to PDF/UWP section for respected code samples.
Save(stream, "Form.pdf");//Create a new PDF document.
PdfDocument document = new PdfDocument();
//Add a new page to the PDF document.
PdfPage page = document.Pages.Add();
//Create a textbox field and add the properties.
PdfTextBoxField textBoxField = new PdfTextBoxField(page, "FirstName");
textBoxField.Bounds = new Syncfusion.Drawing.RectangleF(0, 0, 100, 20);
textBoxField.ToolTip = "First Name";
//Add the form field to the document.
document.Form.Fields.Add(textBoxField);
//Creating the stream object
MemoryStream stream = new MemoryStream();
//Save the document as stream
document.Save(stream);
//If the position is not set to '0' then the PDF will be empty.
stream.Position = 0;
//Close the document.
document.Close(true);
//Defining the ContentType for pdf file.
string contentType = "application/pdf";
//Define the file name.
string fileName = "Form.pdf";
//Creates a FileContentResult object by using the file contents, content type, and file name.
return File(stream, contentType, fileName);//Create a new PDF document.
PdfDocument document = new PdfDocument();
//Add a new page to the PDF document.
PdfPage page = document.Pages.Add();
//Create a textbox field and add the properties.
PdfTextBoxField textBoxField = new PdfTextBoxField(page, "FirstName");
textBoxField.Bounds = new Syncfusion.Drawing.RectangleF(0, 0, 100, 20);
textBoxField.ToolTip = "First Name";
//Add the form field to the document.
document.Form.Fields.Add(textBoxField);
//Save the PDF document to stream.
MemoryStream stream = new MemoryStream();
document.Save(stream);
//Close the document.
document.Close(true);
//Save the stream into pdf file
//The operation in Save under Xamarin varies between Windows Phone, Android and iOS platforms. Please refer PDF/Xamarin section for respective code samples.
if (Device.OS == TargetPlatform.WinPhone || Device.OS == TargetPlatform.Windows)
{
Xamarin.Forms.DependencyService.Get<ISaveWindowsPhone>().Save("Form.pdf", "application/pdf", stream);
}
else
{
Xamarin.Forms.DependencyService.Get<ISave>().Save("Form.pdf", "application/pdf", stream);
}The below code snippet illustrates how to add the textbox to an existing PDF document.
//Load the existing PDF document.
PdfLoadedDocument loadedDocument = new PdfLoadedDocument(fileName);
//Create the form if the form does not exist in the loaded document
if(loadedDocument.Form==null)
loadedDocument.CreateForm();
//Load the page
PdfLoadedPage loadedPage = loadedDocument.Pages[0] as PdfLoadedPage;
//Create a textbox field and add the properties.
PdfTextBoxField textBoxField = new PdfTextBoxField(loadedPage, "FirstName");
textBoxField.Bounds = new RectangleF(0, 0, 100, 20);
textBoxField.ToolTip = "First Name";
//Add the form field to the existing PDF document.
loadedDocument.Form.Fields.Add(textBoxField);
//Save the document.
loadedDocument.Save("Form.pdf");
//close the document
loadedDocument.Close(true);'Load the existing PDF document.
Dim loadedDocument As New PdfLoadedDocument(fileName)
'Create the form if the form does not exist in the loaded document
If loadedDocument.Form Is Nothing Then
loadedDocument.CreateForm()
End If
'Load the page
Dim loadedPage As PdfLoadedPage = TryCast(loadedDocument.Pages(0), PdfLoadedPage)
'Create a text box field and add the properties.
Dim textBoxField As New PdfTextBoxField(loadedPage, "FirstName")
textBoxField.Bounds = New RectangleF(0, 0, 100, 20)
textBoxField.ToolTip = "First Name"
'Add the form field to the existing PDF document.
loadedDocument.Form.Fields.Add(textBoxField)
'Save the document.
loadedDocument.Save("Form.pdf")
'close the document
loadedDocument.Close(True)//Create the file open picker
var picker = new FileOpenPicker();
picker.FileTypeFilter.Add(".pdf");
//Browse and chose the file
StorageFile file = await picker.PickSingleFileAsync();
//Creates an empty PDF loaded document instance
PdfLoadedDocument loadedDocument = new PdfLoadedDocument();
//Loads or opens an existing PDF document through Open method of PdfLoadedDocument class
await loadedDocument.OpenAsync(file);
//Create the form if the form does not exist in the loaded document
if (loadedDocument.Form == null)
loadedDocument.CreateForm();
//Load the page
PdfLoadedPage loadedPage = loadedDocument.Pages[0] as PdfLoadedPage;
//Create a textbox field and add the properties.
PdfTextBoxField textBoxField = new PdfTextBoxField(loadedPage, "FirstName");
textBoxField.Bounds = new RectangleF(0, 0, 100, 20);
textBoxField.ToolTip = "First Name";
//Add the form field to the existing PDF document.
loadedDocument.Form.Fields.Add(textBoxField);
//Save the PDF document to stream.
MemoryStream stream = new MemoryStream();
await loadedDocument.SaveAsync(stream);
//Close the document.
loadedDocument.Close(true);
//Save the stream as PDF document file in local machine. Refer to PDF/UWP section for respected code samples.
Save(stream, "Form.pdf");//Load the PDF document
FileStream docStream = new FileStream(fileName, FileMode.Open, FileAccess.Read);
PdfLoadedDocument loadedDocument = new PdfLoadedDocument(docStream);
//Create the form if the form does not exist in the loaded document
if (loadedDocument.Form == null)
loadedDocument.CreateForm();
//Load the page
PdfLoadedPage loadedPage = loadedDocument.Pages[0] as PdfLoadedPage;
//Create a textbox field and add the properties.
PdfTextBoxField textBoxField = new PdfTextBoxField(loadedPage, "FirstName");
textBoxField.Bounds = new Syncfusion.Drawing.RectangleF(0, 0, 100, 20);
textBoxField.ToolTip = "First Name";
//Add the form field to the existing PDF document.
loadedDocument.Form.Fields.Add(textBoxField);
//Creating the stream object
MemoryStream stream = new MemoryStream();
//Save the document as stream
loadedDocument.Save(stream);
//If the position is not set to '0' then the PDF will be empty.
stream.Position = 0;
//Close the document.
loadedDocument.Close(true);
//Defining the ContentType for pdf file.
string contentType = "application/pdf";
//Define the file name.
string fileName = "Form.pdf";
//Creates a FileContentResult object by using the file contents, content type, and file name.
return File(stream, contentType, fileName);//Load the file as stream
Stream docStream = typeof(App).GetTypeInfo().Assembly.GetManifestResourceStream("Sample.Assets.Sample.pdf");
PdfLoadedDocument loadedDocument = new PdfLoadedDocument(docStream);
//Create the form if the form does not exist in the loaded document
if (loadedDocument.Form == null)
loadedDocument.CreateForm();
//Load the page
PdfLoadedPage loadedPage = loadedDocument.Pages[0] as PdfLoadedPage;
//Create a textbox field and add the properties.
PdfTextBoxField textBoxField = new PdfTextBoxField(loadedPage, "FirstName");
textBoxField.Bounds = new Syncfusion.Drawing.RectangleF(0, 0, 100, 20);
textBoxField.ToolTip = "First Name";
//Add the form field to the existing PDF document.
loadedDocument.Form.Fields.Add(textBoxField);
//Save the PDF document to stream.
MemoryStream stream = new MemoryStream();
loadedDocument.Save(stream);
//Close the document.
loadedDocument.Close(true);
//Save the stream into pdf file
//The operation in Save under Xamarin varies between Windows Phone, Android and iOS platforms. Please refer PDF/Xamarin section for respective code samples.
if (Device.OS == TargetPlatform.WinPhone || Device.OS == TargetPlatform.Windows)
{
Xamarin.Forms.DependencyService.Get<ISaveWindowsPhone>().Save("Form.pdf", "application/pdf", stream);
}
else
{
Xamarin.Forms.DependencyService.Get<ISave>().Save("Form.pdf", "application/pdf", stream);
}Adding the combo box field
PdfComboBoxField class is used to create a combo box field in PDF forms. You can add a list of items to the combo box by using the PdfListFieldItem class.
Please refer the below code snippet for adding the combo box in new PDF document.
//Create a new PDF document.
PdfDocument document = new PdfDocument();
//Add a new page to PDF document.
PdfPage page = document.Pages.Add();
//Create a combo box for the first page.
PdfComboBoxField comboBoxField = new PdfComboBoxField(page, "JobTitle");
//Set the combo box properties.
comboBoxField.Bounds = new RectangleF(0, 40, 100, 20);
//Set tooltip.
comboBoxField.ToolTip = "Job Title";
//Add list items.
comboBoxField.Items.Add(new PdfListFieldItem("Development", "accounts"));
comboBoxField.Items.Add(new PdfListFieldItem("Support", "advertise"));
comboBoxField.Items.Add(new PdfListFieldItem("Documentation", "content"));
//Add combo box to the form.
document.Form.Fields.Add(comboBoxField);
//Save the document.
document.Save("Form.pdf");
//Close the document.
document.Close(true);'Create a new PDF document.
Dim document As New PdfDocument()
'Add a new page to PDF document.
Dim page As PdfPage = document.Pages.Add()
'Create a combo box for the first page.
Dim comboBoxField As New PdfComboBoxField(page, "JobTitle")
'Set the combo box properties.
comboBoxField.Bounds = New RectangleF(0, 40, 100, 20)
'Set tooltip
comboBoxField.ToolTip = "Job Title"
'Add list items.
comboBoxField.Items.Add(New PdfListFieldItem("Development", "accounts"))
comboBoxField.Items.Add(New PdfListFieldItem("Support", "advertise"))
comboBoxField.Items.Add(New PdfListFieldItem("Documentation", "content"))
'Add combo box to the form.
document.Form.Fields.Add(comboBoxField)
'Save the PDF document.
document.Save("Form.pdf")
'Close the document
document.Close(True)//Create a new PDF document.
PdfDocument document = new PdfDocument();
//Add a new page to PDF document.
PdfPage page = document.Pages.Add();
//Create a combo box for the first page.
PdfComboBoxField comboBoxField = new PdfComboBoxField(page, "JobTitle");
//Set the combo box properties.
comboBoxField.Bounds = new RectangleF(0, 40, 100, 20);
//Set tooltip.
comboBoxField.ToolTip = "Job Title";
//Add list items.
comboBoxField.Items.Add(new PdfListFieldItem("Development", "accounts"));
comboBoxField.Items.Add(new PdfListFieldItem("Support", "advertise"));
comboBoxField.Items.Add(new PdfListFieldItem("Documentation", "content"));
//Add combo box to the form.
document.Form.Fields.Add(comboBoxField);
//Save the PDF document to stream.
MemoryStream stream = new MemoryStream();
await document.SaveAsync(stream);
//Close the document.
document.Close(true);
//Save the stream as PDF document file in local machine. Refer to PDF/UWP section for respected code samples.
Save(stream, "Form.pdf");//Create a new PDF document.
PdfDocument document = new PdfDocument();
//Add a new page to PDF document.
PdfPage page = document.Pages.Add();
//Create a combo box for the first page.
PdfComboBoxField comboBoxField = new PdfComboBoxField(page, "JobTitle");
//Set the combo box properties.
comboBoxField.Bounds = new Syncfusion.Drawing.RectangleF(0, 40, 100, 20);
//Set tooltip.
comboBoxField.ToolTip = "Job Title";
//Add list items.
comboBoxField.Items.Add(new PdfListFieldItem("Development", "accounts"));
comboBoxField.Items.Add(new PdfListFieldItem("Support", "advertise"));
comboBoxField.Items.Add(new PdfListFieldItem("Documentation", "content"));
//Add combo box to the form.
document.Form.Fields.Add(comboBoxField);
//Creating the stream object
MemoryStream stream = new MemoryStream();
//Save the document as stream
document.Save(stream);
//If the position is not set to '0' then the PDF will be empty.
stream.Position = 0;
//Close the document.
document.Close(true);
//Defining the ContentType for pdf file.
string contentType = "application/pdf";
//Define the file name.
string fileName = "Form.pdf";
//Creates a FileContentResult object by using the file contents, content type, and file name.
return File(stream, contentType, fileName);//Create a new PDF document.
PdfDocument document = new PdfDocument();
//Add a new page to PDF document.
PdfPage page = document.Pages.Add();
//Create a combo box for the first page.
PdfComboBoxField comboBoxField = new PdfComboBoxField(page, "JobTitle");
//Set the combo box properties.
comboBoxField.Bounds = new Syncfusion.Drawing.RectangleF(0, 40, 100, 20);
//Set tooltip.
comboBoxField.ToolTip = "Job Title";
//Add list items.
comboBoxField.Items.Add(new PdfListFieldItem("Development", "accounts"));
comboBoxField.Items.Add(new PdfListFieldItem("Support", "advertise"));
comboBoxField.Items.Add(new PdfListFieldItem("Documentation", "content"));
//Add combo box to the form.
document.Form.Fields.Add(comboBoxField);
//Save the PDF document to stream.
MemoryStream stream = new MemoryStream();
document.Save(stream);
//Close the document.
document.Close(true);
//Save the stream into pdf file
//The operation in Save under Xamarin varies between Windows Phone, Android and iOS platforms. Please refer PDF/Xamarin section for respective code samples.
if (Device.OS == TargetPlatform.WinPhone || Device.OS == TargetPlatform.Windows)
{
Xamarin.Forms.DependencyService.Get<ISaveWindowsPhone>().Save("Form.pdf", "application/pdf", stream);
}
else
{
Xamarin.Forms.DependencyService.Get<ISave>().Save("Form.pdf", "application/pdf", stream);
}Please refer the below code snippet for adding the combo box in existing PDF document.
//Load the existing PDF document.
PdfLoadedDocument loadedDocument = new PdfLoadedDocument(fileName);
//Create the form if the form does not exist in the loaded document
if(loadedDocument.Form==null)
loadedDocument.CreateForm();
//Load the page
PdfLoadedPage loadedPage = loadedDocument.Pages[0] as PdfLoadedPage;
//Create a combo box for the first page.
PdfComboBoxField comboBoxField = new PdfComboBoxField(loadedPage, "JobTitle");
//Set the combo box properties.
comboBoxField.Bounds = new RectangleF(0, 40, 100, 20);
//Set tooltip.
comboBoxField.ToolTip = "Job Title";
//Add list items.
comboBoxField.Items.Add(new PdfListFieldItem("Development", "accounts"));
comboBoxField.Items.Add(new PdfListFieldItem("Support", "advertise"));
comboBoxField.Items.Add(new PdfListFieldItem("Documentation", "content"));
//Add combo box to the form.
loadedDocument.Form.Fields.Add(comboBoxField);
//Save the document.
loadedDocument.Save("Form.pdf");
//Close the document.
loadedDocument.Close(true);'Load the existing PDF document.
Dim loadedDocument As New PdfLoadedDocument(fileName)
'Create the form if the form does not exist in the loaded document
If loadedDocument.Form Is Nothing Then
loadedDocument.CreateForm()
End If
'Load the page
Dim loadedPage As PdfLoadedPage = TryCast(loadedDocument.Pages(0), PdfLoadedPage)
'Create a combo box for the first page.
Dim comboBoxField As New PdfComboBoxField(loadedPage, "JobTitle")
'Set the combo box properties.
comboBoxField.Bounds = New RectangleF(0, 40, 100, 20)
'Set tooltip.
comboBoxField.ToolTip = "Job Title"
'Add list items.
comboBoxField.Items.Add(New PdfListFieldItem("Development", "accounts"))
comboBoxField.Items.Add(New PdfListFieldItem("Support", "advertise"))
comboBoxField.Items.Add(New PdfListFieldItem("Documentation", "content"))
'Add combo box to the form.
loadedDocument.Form.Fields.Add(comboBoxField)
'Save the document.
loadedDocument.Save("Form.pdf")
'Close the document.
loadedDocument.Close(True)//Create the file open picker
var picker = new FileOpenPicker();
picker.FileTypeFilter.Add(".pdf");
//Browse and chose the file
StorageFile file = await picker.PickSingleFileAsync();
//Creates an empty PDF loaded document instance
PdfLoadedDocument loadedDocument = new PdfLoadedDocument();
//Loads or opens an existing PDF document through Open method of PdfLoadedDocument class
await loadedDocument.OpenAsync(file);
//Create the form if the form does not exist in the loaded document
if (loadedDocument.Form == null)
loadedDocument.CreateForm();
//Load the page
PdfLoadedPage loadedPage = loadedDocument.Pages[0] as PdfLoadedPage;
//Create a combo box for the first page.
PdfComboBoxField comboBoxField = new PdfComboBoxField(loadedPage, "JobTitle");
//Set the combo box properties.
comboBoxField.Bounds = new RectangleF(0, 40, 100, 20);
//Set tooltip.
comboBoxField.ToolTip = "Job Title";
//Add list items.
comboBoxField.Items.Add(new PdfListFieldItem("Development", "accounts"));
comboBoxField.Items.Add(new PdfListFieldItem("Support", "advertise"));
comboBoxField.Items.Add(new PdfListFieldItem("Documentation", "content"));
//Add combo box to the form.
loadedDocument.Form.Fields.Add(comboBoxField);
//Save the PDF document to stream.
MemoryStream stream = new MemoryStream();
await loadedDocument.SaveAsync(stream);
//Close the document.
loadedDocument.Close(true);
//Save the stream as PDF document file in local machine. Refer to PDF/UWP section for respected code samples.
Save(stream, "Form.pdf");//Load the PDF document
FileStream docStream = new FileStream(fileName, FileMode.Open, FileAccess.Read);
PdfLoadedDocument loadedDocument = new PdfLoadedDocument(docStream);
//Create the form if the form does not exist in the loaded document
if (loadedDocument.Form == null)
loadedDocument.CreateForm();
//Load the page
PdfLoadedPage loadedPage = loadedDocument.Pages[0] as PdfLoadedPage;
//Create a combo box for the first page.
PdfComboBoxField comboBoxField = new PdfComboBoxField(loadedPage, "JobTitle");
//Set the combo box properties.
comboBoxField.Bounds = new Syncfusion.Drawing.RectangleF(0, 40, 100, 20);
//Set tooltip.
comboBoxField.ToolTip = "Job Title";
//Add list items.
comboBoxField.Items.Add(new PdfListFieldItem("Development", "accounts"));
comboBoxField.Items.Add(new PdfListFieldItem("Support", "advertise"));
comboBoxField.Items.Add(new PdfListFieldItem("Documentation", "content"));
//Add combo box to the form.
loadedDocument.Form.Fields.Add(comboBoxField);
//Creating the stream object
MemoryStream stream = new MemoryStream();
//Save the PDF document to stream
loadedDocument.Save(stream);
//If the position is not set to '0' then the PDF will be empty.
stream.Position = 0;
//Close the document.
loadedDocument.Close(true);
//Defining the ContentType for pdf file.
string contentType = "application/pdf";
//Define the file name.
string fileName = "Form.pdf";
//Creates a FileContentResult object by using the file contents, content type, and file name.
return File(stream, contentType, fileName);//Load the file as stream
Stream docStream = typeof(App).GetTypeInfo().Assembly.GetManifestResourceStream("Sample.Assets.Sample.pdf");
PdfLoadedDocument loadedDocument = new PdfLoadedDocument(docStream);
//Create the form if the form does not exist in the loaded document
if (loadedDocument.Form == null)
loadedDocument.CreateForm();
//Load the page
PdfLoadedPage loadedPage = loadedDocument.Pages[0] as PdfLoadedPage;
//Create a combo box for the first page.
PdfComboBoxField comboBoxField = new PdfComboBoxField(loadedPage, "JobTitle");
//Set the combo box properties.
comboBoxField.Bounds = new Syncfusion.Drawing.RectangleF(0, 40, 100, 20);
//Set tooltip.
comboBoxField.ToolTip = "Job Title";
//Add list items.
comboBoxField.Items.Add(new PdfListFieldItem("Development", "accounts"));
comboBoxField.Items.Add(new PdfListFieldItem("Support", "advertise"));
comboBoxField.Items.Add(new PdfListFieldItem("Documentation", "content"));
//Add combo box to the form.
loadedDocument.Form.Fields.Add(comboBoxField);
//Save the PDF document to stream.
MemoryStream stream = new MemoryStream();
loadedDocument.Save(stream);
//Close the document.
loadedDocument.Close(true);
//Save the stream into pdf file
//The operation in Save under Xamarin varies between Windows Phone, Android and iOS platforms. Please refer PDF/Xamarin section for respective code samples.
if (Device.OS == TargetPlatform.WinPhone || Device.OS == TargetPlatform.Windows)
{
Xamarin.Forms.DependencyService.Get<ISaveWindowsPhone>().Save("Form.pdf", "application/pdf", stream);
}
else
{
Xamarin.Forms.DependencyService.Get<ISave>().Save("Form.pdf", "application/pdf", stream);
}Adding the radio button field
To create the radio button in the PDF forms, you can use PdfRadioButtonListField class and you can create the radio button list items by using the PdfRadioButtonListItem class.
Please refer the below code snippet for adding the radio button in new PDF document.
//Create a new PDF document.
PdfDocument document = new PdfDocument();
//Add a new page to PDF document.
PdfPage page = document.Pages.Add();
//Create a Radio button.
PdfRadioButtonListField employeesRadioList = new PdfRadioButtonListField(page, "employeesRadioList");
//Add the radio button into form
document.Form.Fields.Add(employeesRadioList);
//Create radio button items.
PdfRadioButtonListItem radioButtonItem1 = new PdfRadioButtonListItem("1-9");
radioButtonItem1.Bounds = new RectangleF(100, 140, 20, 20);
PdfRadioButtonListItem radioButtonItem2 = new PdfRadioButtonListItem("10-49");
radioButtonItem2.Bounds = new RectangleF(100, 170, 20, 20);
//Add the items to radio button group.
employeesRadioList.Items.Add(radioButtonItem1);
employeesRadioList.Items.Add(radioButtonItem2);
//Save the document.
document.Save("Form.pdf");
//Close the document
document.Close(true);'Create a new PDF document.
Dim document As New PdfDocument()
'Add a new page to PDF document.
Dim page As PdfPage = document.Pages.Add()
'Create a Radio button.
Dim employeesRadioList As New PdfRadioButtonListField(page, "employeesRadioList")
'Add the radio button into form
document.Form.Fields.Add(employeesRadioList)
'Create radio button items.
Dim radioItem1 As New PdfRadioButtonListItem("1-9")
radioItem1.Bounds = New RectangleF(100, 140, 20, 20)
Dim radioItem2 As New PdfRadioButtonListItem("10-49")
radioItem2.Bounds = New RectangleF(100, 170, 20, 20)
'Add the items to radio button group.
employeesRadioList.Items.Add(radioItem1)
employeesRadioList.Items.Add(radioItem2)
'Save the PDF document.
document.Save("Form.pdf")
'close the document
document.Close(True)//Create a new PDF document.
PdfDocument document = new PdfDocument();
//Add a new page to PDF document.
PdfPage page = document.Pages.Add();
//Create a Radio button.
PdfRadioButtonListField employeesRadioList = new PdfRadioButtonListField(page, "employeesRadioList");
//Add the radio button into form
document.Form.Fields.Add(employeesRadioList);
//Create radio button items.
PdfRadioButtonListItem radioButtonItem1 = new PdfRadioButtonListItem("1-9");
radioButtonItem1.Bounds = new RectangleF(100, 140, 20, 20);
PdfRadioButtonListItem radioButtonItem2 = new PdfRadioButtonListItem("10-49");
radioButtonItem2.Bounds = new RectangleF(100, 170, 20, 20);
//Add the items to radio button group.
employeesRadioList.Items.Add(radioButtonItem1);
employeesRadioList.Items.Add(radioButtonItem2);
//Save the PDF document to stream.
MemoryStream stream = new MemoryStream();
await document.SaveAsync(stream);
//Close the document.
document.Close(true);
//Save the stream as PDF document file in local machine. Refer to PDF/UWP section for respected code samples.
Save(stream, "Form.pdf");//Create a new PDF document.
PdfDocument document = new PdfDocument();
//Add a new page to PDF document.
PdfPage page = document.Pages.Add();
//Create a Radio button.
PdfRadioButtonListField employeesRadioList = new PdfRadioButtonListField(page, "employeesRadioList");
//Add the radio button into form
document.Form.Fields.Add(employeesRadioList);
//Create radio button items.
PdfRadioButtonListItem radioButtonItem1 = new PdfRadioButtonListItem("1-9");
radioButtonItem1.Bounds = new Syncfusion.Drawing.RectangleF(100, 140, 20, 20);
PdfRadioButtonListItem radioButtonItem2 = new PdfRadioButtonListItem("10-49");
radioButtonItem2.Bounds = new Syncfusion.Drawing.RectangleF(100, 170, 20, 20);
//Add the items to radio button group.
employeesRadioList.Items.Add(radioButtonItem1);
employeesRadioList.Items.Add(radioButtonItem2);
//Creating the stream object
MemoryStream stream = new MemoryStream();
//Save the PDF document to stream
document.Save(stream);
//If the position is not set to '0' then the PDF will be empty.
stream.Position = 0;
//Close the document.
document.Close(true);
//Defining the ContentType for pdf file.
string contentType = "application/pdf";
//Define the file name.
string fileName = "Form.pdf";
//Creates a FileContentResult object by using the file contents, content type, and file name.
return File(stream, contentType, fileName);//Create a new PDF document.
PdfDocument document = new PdfDocument();
//Add a new page to PDF document.
PdfPage page = document.Pages.Add();
//Create a Radio button.
PdfRadioButtonListField employeesRadioList = new PdfRadioButtonListField(page, "employeesRadioList");
//Add the radio button into form
document.Form.Fields.Add(employeesRadioList);
//Create radio button items.
PdfRadioButtonListItem radioButtonItem1 = new PdfRadioButtonListItem("1-9");
radioButtonItem1.Bounds = new Syncfusion.Drawing.RectangleF(100, 140, 20, 20);
PdfRadioButtonListItem radioButtonItem2 = new PdfRadioButtonListItem("10-49");
radioButtonItem2.Bounds = new Syncfusion.Drawing.RectangleF(100, 170, 20, 20);
//Add the items to radio button group.
employeesRadioList.Items.Add(radioButtonItem1);
employeesRadioList.Items.Add(radioButtonItem2);
//Save the PDF document to stream.
MemoryStream stream = new MemoryStream();
document.Save(stream);
//Close the document.
document.Close(true);
//Save the stream into pdf file
//The operation in Save under Xamarin varies between Windows Phone, Android and iOS platforms. Please refer PDF/Xamarin section for respective code samples.
if (Device.OS == TargetPlatform.WinPhone || Device.OS == TargetPlatform.Windows)
{
Xamarin.Forms.DependencyService.Get<ISaveWindowsPhone>().Save("Form.pdf", "application/pdf", stream);
}
else
{
Xamarin.Forms.DependencyService.Get<ISave>().Save("Form.pdf", "application/pdf", stream);
}The below code snippet illustrates how to add the radio button in existing PDF document.
//Load the existing PDF document.
PdfLoadedDocument loadedDocument = new PdfLoadedDocument(fileName);
//Create the form if the form does not exist in the loaded document
if(loadedDocument.Form==null)
loadedDocument.CreateForm();
//Load the page
PdfLoadedPage loadedPage = loadedDocument.Pages[0] as PdfLoadedPage;
//Create a Radio button.
PdfRadioButtonListField employeesRadioList = new PdfRadioButtonListField(loadedPage, "employeesRadioList");
//Add the radio button into loaded document
loadedDocument.Form.Fields.Add(employeesRadioList);
//Create radio button items.
PdfRadioButtonListItem radioButtonItem1 = new PdfRadioButtonListItem("1-9");
radioButtonItem1.Bounds = new RectangleF(100, 140, 20, 20);
PdfRadioButtonListItem radioButtonItem2 = new PdfRadioButtonListItem("10-49");
radioButtonItem2.Bounds = new RectangleF(100, 170, 20, 20);
//Add the items to radio button group.
employeesRadioList.Items.Add(radioButtonItem1);
employeesRadioList.Items.Add(radioButtonItem2);
//Save the document.
loadedDocument.Save("Form.pdf");
//Close the document
loadedDocument.Close(true);'Load the existing PDF document.
Dim loadedDocument As New PdfLoadedDocument(fileName)
'Create the form if the form does not exist in the loaded document
If loadedDocument.Form Is Nothing Then
loadedDocument.CreateForm()
End If
'Load the page
Dim loadedPage As PdfLoadedPage = TryCast(loadedDocument.Pages(0), PdfLoadedPage)
'Create a Radio button.
Dim employeesRadioList As New PdfRadioButtonListField(loadedPage, "employeesRadioList")
'Add the radio button into loaded document
loadedDocument.Form.Fields.Add(employeesRadioList)
'Create radio button items.
Dim radioButtonItem1 As New PdfRadioButtonListItem("1-9")
radioButtonItem1.Bounds = New RectangleF(100, 140, 20, 20)
Dim radioButtonItem2 As New PdfRadioButtonListItem("10-49")
radioButtonItem2.Bounds = New RectangleF(100, 170, 20, 20)
'Add the items to radio button group.
employeesRadioList.Items.Add(radioButtonItem1)
employeesRadioList.Items.Add(radioButtonItem2)
'Save the document.
loadedDocument.Save("Form.pdf")
'Close the document
loadedDocument.Close(True)//Create the file open picker
var picker = new FileOpenPicker();
picker.FileTypeFilter.Add(".pdf");
//Browse and chose the file
StorageFile file = await picker.PickSingleFileAsync();
//Creates an empty PDF loaded document instance
PdfLoadedDocument loadedDocument = new PdfLoadedDocument();
//Loads or opens an existing PDF document through Open method of PdfLoadedDocument class
await loadedDocument.OpenAsync(file);
//Create the form if the form does not exist in the loaded document
if (loadedDocument.Form == null)
loadedDocument.CreateForm();
//Load the page
PdfLoadedPage loadedPage = loadedDocument.Pages[0] as PdfLoadedPage;
//Create a Radio button.
PdfRadioButtonListField employeesRadioList = new PdfRadioButtonListField(loadedPage, "employeesRadioList");
//Add the radio button into loaded document
loadedDocument.Form.Fields.Add(employeesRadioList);
//Create radio button items.
PdfRadioButtonListItem radioButtonItem1 = new PdfRadioButtonListItem("1-9");
radioButtonItem1.Bounds = new RectangleF(100, 140, 20, 20);
PdfRadioButtonListItem radioButtonItem2 = new PdfRadioButtonListItem("10-49");
radioButtonItem2.Bounds = new RectangleF(100, 170, 20, 20);
//Add the items to radio button group.
employeesRadioList.Items.Add(radioButtonItem1);
employeesRadioList.Items.Add(radioButtonItem2);
//Save the PDF document to stream.
MemoryStream stream = new MemoryStream();
await loadedDocument.SaveAsync(stream);
//Close the document.
loadedDocument.Close(true);
//Save the stream as PDF document file in local machine. Refer to PDF/UWP section for respected code samples.
Save(stream, "Form.pdf");//Load the PDF document
FileStream docStream = new FileStream(fileName, FileMode.Open, FileAccess.Read);
PdfLoadedDocument loadedDocument = new PdfLoadedDocument(docStream);
//Create the form if the form does not exist in the loaded document
if (loadedDocument.Form == null)
loadedDocument.CreateForm();
//Load the page
PdfLoadedPage loadedPage = loadedDocument.Pages[0] as PdfLoadedPage;
//Create a Radio button.
PdfRadioButtonListField employeesRadioList = new PdfRadioButtonListField(loadedPage, "employeesRadioList");
//Add the radio button into loaded document
loadedDocument.Form.Fields.Add(employeesRadioList);
//Create radio button items.
PdfRadioButtonListItem radioButtonItem1 = new PdfRadioButtonListItem("1-9");
radioButtonItem1.Bounds = new Syncfusion.Drawing.RectangleF(100, 140, 20, 20);
PdfRadioButtonListItem radioButtonItem2 = new PdfRadioButtonListItem("10-49");
radioButtonItem2.Bounds = new Syncfusion.Drawing.RectangleF(100, 170, 20, 20);
//Add the items to radio button group.
employeesRadioList.Items.Add(radioButtonItem1);
employeesRadioList.Items.Add(radioButtonItem2);
//Creating the stream object
MemoryStream stream = new MemoryStream();
//Save the PDF document to stream
loadedDocument.Save(stream);
//If the position is not set to '0' then the PDF will be empty.
stream.Position = 0;
//Close the document.
loadedDocument.Close(true);
//Defining the ContentType for pdf file.
string contentType = "application/pdf";
//Define the file name.
string fileName = "Form.pdf";
//Creates a FileContentResult object by using the file contents, content type, and file name.
return File(stream, contentType, fileName);//Load the file as stream
Stream docStream = typeof(App).GetTypeInfo().Assembly.GetManifestResourceStream("Sample.Assets.Sample.pdf");
PdfLoadedDocument loadedDocument = new PdfLoadedDocument(docStream);
//Create the form if the form does not exist in the loaded document
if (loadedDocument.Form == null)
loadedDocument.CreateForm();
//Load the page
PdfLoadedPage loadedPage = loadedDocument.Pages[0] as PdfLoadedPage;
//Create a Radio button.
PdfRadioButtonListField employeesRadioList = new PdfRadioButtonListField(loadedPage, "employeesRadioList");
//Add the radio button into loaded document
loadedDocument.Form.Fields.Add(employeesRadioList);
//Create radio button items.
PdfRadioButtonListItem radioButtonItem1 = new PdfRadioButtonListItem("1-9");
radioButtonItem1.Bounds = new Syncfusion.Drawing.RectangleF(100, 140, 20, 20);
PdfRadioButtonListItem radioButtonItem2 = new PdfRadioButtonListItem("10-49");
radioButtonItem2.Bounds = new Syncfusion.Drawing.RectangleF(100, 170, 20, 20);
//Add the items to radio button group.
employeesRadioList.Items.Add(radioButtonItem1);
employeesRadioList.Items.Add(radioButtonItem2);
//Save the PDF document to stream.
MemoryStream stream = new MemoryStream();
loadedDocument.Save(stream);
//Close the document.
loadedDocument.Close(true);
//Save the stream into pdf file
//The operation in Save under Xamarin varies between Windows Phone, Android and iOS platforms. Please refer PDF/Xamarin section for respective code samples.
if (Device.OS == TargetPlatform.WinPhone || Device.OS == TargetPlatform.Windows)
{
Xamarin.Forms.DependencyService.Get<ISaveWindowsPhone>().Save("Form.pdf", "application/pdf", stream);
}
else
{
Xamarin.Forms.DependencyService.Get<ISave>().Save("Form.pdf", "application/pdf", stream);
}Retrieving option values from acroform radio button
The Essential PDF supports retrieving option values from acroform radio button. The OptionValue property is used to get option values of PdfLoadedRadioButtonItem instance.
The following code example illustrates how to get option values from acroform radio button.
//Load an existing document
PdfLoadedDocument doc = new PdfLoadedDocument("SourceForm.pdf");
//Gets the loaded form
PdfLoadedForm form = doc.Form;
//Set default appearance to false
form.SetDefaultAppearance(false);
//Gets the 'Gender' radio button field
PdfLoadedRadioButtonListField radioButtonField = form.Fields["Gender"] as PdfLoadedRadioButtonListField;
//Select the item that contains option value as "Male"
foreach (PdfLoadedRadioButtonItem item in radioButtonField.Items)
{
//Gets an option value of the item
if (item.OptionValue == "Male")
{
item.Selected = true;
}
}
//Save and close the PDF document
doc.Save("Form.pdf");
doc.Close(true);'Load an existing document
Dim doc As New PdfLoadedDocument("SourceForm.pdf")
'Gets the loaded form
Dim form As PdfLoadedForm = doc.Form
'Set default appearance to false
form.SetDefaultAppearance(False)
'Gets the 'Gender' radio button field
Dim radioButtonField As PdfLoadedRadioButtonListField = TryCast(form.Fields("Gender"), PdfLoadedRadioButtonListField)
'Select the item that contains option value as "Male"
For Each item As PdfLoadedRadioButtonItem In radioButtonField.Items
'Gets an option value of the item
If item.OptionValue = "Male" Then
item.Selected = True
End If
Next
'Save and close the PDF document
doc.Save("Form.pdf")
doc.Close(True)//Create the file open picker
var picker = new FileOpenPicker();
picker.FileTypeFilter.Add(".pdf");
//Browse and choose the file
StorageFile file = await picker.PickSingleFileAsync();
//Creates an empty PDF loaded document instance
PdfLoadedDocument doc = new PdfLoadedDocument();
//Loads or opens an existing PDF document through the Open method of PdfLoadedDocument class
await doc.OpenAsync(file);
//Gets the loaded form
PdfLoadedForm form = doc.Form;
//Set default appearance to false
form.SetDefaultAppearance(false);
//Gets the 'Gender' radio button field
PdfLoadedRadioButtonListField radioButtonField = form.Fields["Gender"] as PdfLoadedRadioButtonListField;
//Select the item that contains option value as "Male"
foreach (PdfLoadedRadioButtonItem item in radioButtonField.Items)
{
//Gets an option value of the item
if (item.OptionValue == "Male")
{
item.Selected = true;
}
}
//Save the PDF document to stream
MemoryStream stream = new MemoryStream();
await doc.SaveAsync(stream);
//Close the document
doc.Close(true);
//Save the stream as PDF document file in local machine. Refer to the PDF/UWP section for respective code samples
Save(stream, "Form.pdf");//Load the PDF document
FileStream docStream = new FileStream(fileName, FileMode.Open, FileAccess.Read);
PdfLoadedDocument doc = new PdfLoadedDocument(docStream);
//Gets the loaded form
PdfLoadedForm form = doc.Form;
//Set default appearance to false
form.SetDefaultAppearance(false);
//Gets the 'Gender' radio button field
PdfLoadedRadioButtonListField radioButtonField = form.Fields["Gender"] as PdfLoadedRadioButtonListField;
//Select the item that contains option value as "Male"
foreach (PdfLoadedRadioButtonItem item in radioButtonField.Items)
{
//Gets an option value of the item
if (item.OptionValue == "Male")
{
item.Selected = true;
}
}
//Save the document into stream
MemoryStream stream = new MemoryStream();
doc.Save(stream);
stream.Position = 0;
//Close the document
doc.Close(true);
//Defining the ContentType for PDF file
string contentType = "application/pdf";
//Define the file name
string fileName = "Form.pdf";
//Creates a FileContentResult object by using the file contents, content type, and file name.
return File(stream, contentType, fileName);//Load the file as stream
Stream docStream = typeof(App).GetTypeInfo().Assembly.GetManifestResourceStream("Sample.Assets.Sample.pdf");
PdfLoadedDocument doc = new PdfLoadedDocument(docStream);
//Get the loaded form
PdfLoadedForm form = doc.Form;
//Set default appearance to false
form.SetDefaultAppearance(false);
//Gets the 'Gender' radio button field
PdfLoadedRadioButtonListField radioButtonField = form.Fields["Gender"] as PdfLoadedRadioButtonListField;
//Select the item that contains option value as "Male"
foreach (PdfLoadedRadioButtonItem item in radioButtonField.Items)
{
//Gets an option value of the item
if (item.OptionValue == "Male")
{
item.Selected = true;
}
}
//Save the PDF document to stream
MemoryStream stream = new MemoryStream();
doc.Save(stream);
//Close the document
doc.Close(true);
//Save the stream into PDF file
//The operation in Save under Xamarin varies between Windows Phone, Android, and iOS platforms. Refer to the PDF/Xamarin section for respective code samples
if (Device.OS == TargetPlatform.WinPhone || Device.OS == TargetPlatform.Windows)
{
Xamarin.Forms.DependencyService.Get<ISaveWindowsPhone>().Save("Form.pdf", "application/pdf", stream);
}
else
{
Xamarin.Forms.DependencyService.Get<ISave>().Save("Form.pdf", "application/pdf", stream);
}Adding the list box field
You can create the list box field in PDF forms using PdfListBoxField class.
Please refer the below code snippet for adding the list box field in new PDF document.
//Create a new PDF document.
PdfDocument document = new PdfDocument();
//Add a new page to PDF document.
PdfPage page = document.Pages.Add();
//Create list box.
PdfListBoxField listBoxField = new PdfListBoxField(page, "list1");
//Set the properties.
listBoxField.Bounds = new RectangleF(100, 60, 100, 50);
//Add the items to the list box.
listBoxField.Items.Add(new PdfListFieldItem("English", "English"));
listBoxField.Items.Add(new PdfListFieldItem("French", "French"));
listBoxField.Items.Add(new PdfListFieldItem("German", "German"));
//Select the item.
listBoxField.SelectedIndex = 2;
//Set the multi select option.
listBoxField.MultiSelect = true;
//Add the list box into PDF document
document.Form.Fields.Add(listBoxField);
//Save the document.
document.Save("Form.pdf");
//close the document
document.Close(true);'Create a new PDF document.
Dim document As New PdfDocument()
'Add a new page to PDF document.
Dim page As PdfPage = document.Pages.Add()
'Create list box.
Dim listBoxField As New PdfListBoxField(page, "list1")
'Set the properties.
listBoxField.Bounds = New RectangleF(100, 60, 100, 50)
'Add the items to the list box.
listBoxField.Items.Add(New PdfListFieldItem("English", "English"))
listBoxField.Items.Add(New PdfListFieldItem("French", "French"))
listBoxField.Items.Add(New PdfListFieldItem("German", "German"))
'Select the item.
listBoxField.SelectedIndex = 2
'Set the multi select option.
listBoxField.MultiSelect = True
'Add the list box into PDF document
document.Form.Fields.Add(listBoxField)
'Save the document.
document.Save("Form.pdf")
'close the document
document.Close(True)//Create a new PDF document.
PdfDocument document = new PdfDocument();
//Add a new page to PDF document.
PdfPage page = document.Pages.Add();
//Create list box.
PdfListBoxField listBoxField = new PdfListBoxField(page, "list1");
//Set the properties.
listBoxField.Bounds = new RectangleF(100, 60, 100, 50);
//Add the items to the list box.
listBoxField.Items.Add(new PdfListFieldItem("English", "English"));
listBoxField.Items.Add(new PdfListFieldItem("French", "French"));
listBoxField.Items.Add(new PdfListFieldItem("German", "German"));
//Select the item.
listBoxField.SelectedIndex = 2;
//Set the multi select option.
listBoxField.MultiSelect = true;
//Add the list box into PDF document
document.Form.Fields.Add(listBoxField);
//Save the PDF document to stream.
MemoryStream stream = new MemoryStream();
await document.SaveAsync(stream);
//Close the document.
document.Close(true);
//Save the stream as PDF document file in local machine. Refer to PDF/UWP section for respected code samples.
Save(stream, "Form.pdf");//Create a new PDF document.
PdfDocument document = new PdfDocument();
//Add a new page to PDF document.
PdfPage page = document.Pages.Add();
//Create list box.
PdfListBoxField listBoxField = new PdfListBoxField(page, "list1");
//Set the properties.
listBoxField.Bounds = new Syncfusion.Drawing.RectangleF(100, 60, 100, 50);
//Add the items to the list box.
listBoxField.Items.Add(new PdfListFieldItem("English", "English"));
listBoxField.Items.Add(new PdfListFieldItem("French", "French"));
listBoxField.Items.Add(new PdfListFieldItem("German", "German"));
//Select the item.
listBoxField.SelectedIndex = 0;
//Set the multi select option.
listBoxField.MultiSelect = true;
//Add the list box into PDF document
document.Form.Fields.Add(listBoxField);
//Creating the stream object
MemoryStream stream = new MemoryStream();
//Save the PDF document to stream
document.Save(stream);
//If the position is not set to '0' then the PDF will be empty.
stream.Position = 0;
//Close the document.
document.Close(true);
//Defining the ContentType for pdf file.
string contentType = "application/pdf";
//Define the file name.
string fileName = "Form.pdf";
//Creates a FileContentResult object by using the file contents, content type, and file name.
return File(stream, contentType, fileName);//Create a new PDF document.
PdfDocument document = new PdfDocument();
//Add a new page to PDF document.
PdfPage page = document.Pages.Add();
//Create list box.
PdfListBoxField listBoxField = new PdfListBoxField(page, "list1");
//Set the properties.
listBoxField.Bounds = new Syncfusion.Drawing.RectangleF(100, 60, 100, 50);
//Add the items to the list box.
listBoxField.Items.Add(new PdfListFieldItem("English", "English"));
listBoxField.Items.Add(new PdfListFieldItem("French", "French"));
listBoxField.Items.Add(new PdfListFieldItem("German", "German"));
//Select the item.
listBoxField.SelectedIndex = 2;
//Set the multi select option.
listBoxField.MultiSelect = true;
//Add the list box into PDF document
document.Form.Fields.Add(listBoxField);
//Save the PDF document to stream.
MemoryStream stream = new MemoryStream();
document.Save(stream);
//Close the document.
document.Close(true);
//Save the stream into pdf file
//The operation in Save under Xamarin varies between Windows Phone, Android and iOS platforms. Please refer PDF/Xamarin section for respective code samples.
if (Device.OS == TargetPlatform.WinPhone || Device.OS == TargetPlatform.Windows)
{
Xamarin.Forms.DependencyService.Get<ISaveWindowsPhone>().Save("Form.pdf", "application/pdf", stream);
}
else
{
Xamarin.Forms.DependencyService.Get<ISave>().Save("Form.pdf", "application/pdf", stream);
}Please refer the below code snippet for adding the list box field in existing PDF document.
//Load the existing PDF document.
PdfLoadedDocument loadedDocument = new PdfLoadedDocument(fileName);
//Create the form if the form does not exist in the loaded document
if(loadedDocument.Form==null)
loadedDocument.CreateForm();
//Load the page
PdfLoadedPage loadedPage = loadedDocument.Pages[0] as PdfLoadedPage;
//Create list box.
PdfListBoxField listBoxField = new PdfListBoxField(loadedPage, "list1");
//Set the properties.
listBoxField.Bounds = new RectangleF(100, 60, 100, 50);
//Add the items to the list box.
listBoxField.Items.Add(new PdfListFieldItem("English", "English"));
listBoxField.Items.Add(new PdfListFieldItem("French", "French"));
listBoxField.Items.Add(new PdfListFieldItem("German", "German"));
//Select the item.
listBoxField.SelectedIndex = 2;
//Set the multi select option.
listBoxField.MultiSelect = true;
//Add the list box into PDF document
loadedDocument.Form.Fields.Add(listBoxField);
//Save the document.
loadedDocument.Save("Form.pdf");
//close the document
loadedDocument.Close(true);'Load the existing PDF document.
Dim loadedDocument As New PdfLoadedDocument(fileName)
'Create the form if the form does not exist in the loaded document
If loadedDocument.Form Is Nothing Then
loadedDocument.CreateForm()
End If
'Load the page
Dim loadedPage As PdfLoadedPage = TryCast(loadedDocument.Pages(0), PdfLoadedPage)
'Create list box.
Dim listBoxField As New PdfListBoxField(loadedPage, "list1")
'Set the properties.
listBoxField.Bounds = New RectangleF(100, 60, 100, 50)
'Add the items to the list box.
listBoxField.Items.Add(New PdfListFieldItem("English", "English"))
listBoxField.Items.Add(New PdfListFieldItem("French", "French"))
listBoxField.Items.Add(New PdfListFieldItem("German", "German"))
'Select the item.
listBoxField.SelectedIndex = 2
'Set the multi select option.
listBoxField.MultiSelect = True
'Add the list box into PDF document
loadedDocument.Form.Fields.Add(listBoxField)
'Save the document.
loadedDocument.Save("Form.pdf")
'close the document
loadedDocument.Close(True)//Create the file open picker
var picker = new FileOpenPicker();
picker.FileTypeFilter.Add(".pdf");
//Browse and chose the file
StorageFile file = await picker.PickSingleFileAsync();
//Creates an empty PDF loaded document instance
PdfLoadedDocument loadedDocument = new PdfLoadedDocument();
//Loads or opens an existing PDF document through Open method of PdfLoadedDocument class
await loadedDocument.OpenAsync(file);
//Create the form if the form does not exist in the loaded document
if (loadedDocument.Form == null)
loadedDocument.CreateForm();
//Load the page
PdfLoadedPage loadedPage = loadedDocument.Pages[0] as PdfLoadedPage;
//Create list box.
PdfListBoxField listBoxField = new PdfListBoxField(loadedPage, "list1");
//Set the properties.
listBoxField.Bounds = new RectangleF(100, 60, 100, 50);
//Add the items to the list box.
listBoxField.Items.Add(new PdfListFieldItem("English", "English"));
listBoxField.Items.Add(new PdfListFieldItem("French", "French"));
listBoxField.Items.Add(new PdfListFieldItem("German", "German"));
//Select the item.
listBoxField.SelectedIndex = 2;
//Set the multi select option.
listBoxField.MultiSelect = true;
//Add the list box into PDF document
loadedDocument.Form.Fields.Add(listBoxField);
//Save the PDF document to stream.
MemoryStream stream = new MemoryStream();
await loadedDocument.SaveAsync(stream);
//Close the document.
loadedDocument.Close(true);
//Save the stream as PDF document file in local machine. Refer to PDF/UWP section for respected code samples.
Save(stream, "Form.pdf");//Load the PDF document
FileStream docStream = new FileStream(fileName, FileMode.Open, FileAccess.Read);
PdfLoadedDocument loadedDocument = new PdfLoadedDocument(docStream);
//Create the form if the form does not exist in the loaded document
if (loadedDocument.Form == null)
loadedDocument.CreateForm();
//Load the page
PdfLoadedPage loadedPage = loadedDocument.Pages[0] as PdfLoadedPage;
//Create list box.
PdfListBoxField listBoxField = new PdfListBoxField(loadedPage, "list1");
//Set the properties.
listBoxField.Bounds = new Syncfusion.Drawing.RectangleF(100, 60, 100, 50);
//Add the items to the list box.
listBoxField.Items.Add(new PdfListFieldItem("English", "English"));
listBoxField.Items.Add(new PdfListFieldItem("French", "French"));
listBoxField.Items.Add(new PdfListFieldItem("German", "German"));
//Select the item.
listBoxField.SelectedIndex = 2;
//Set the multi select option.
listBoxField.MultiSelect = true;
//Add the list box into PDF document
loadedDocument.Form.Fields.Add(listBoxField);
//Creating the stream object
MemoryStream stream = new MemoryStream();
//Save the PDF document to stream
loadedDocument.Save(stream);
//If the position is not set to '0' then the PDF will be empty.
stream.Position = 0;
//Close the document.
loadedDocument.Close(true);
//Defining the ContentType for pdf file.
string contentType = "application/pdf";
//Define the file name.
string fileName = "Form.pdf";
//Creates a FileContentResult object by using the file contents, content type, and file name.
return File(stream, contentType, fileName);//Load the file as stream
Stream docStream = typeof(App).GetTypeInfo().Assembly.GetManifestResourceStream("Sample.Assets.Sample.pdf");
PdfLoadedDocument loadedDocument = new PdfLoadedDocument(docStream);
//Create the form if the form does not exist in the loaded document
if (loadedDocument.Form == null)
loadedDocument.CreateForm();
//Load the page
PdfLoadedPage loadedPage = loadedDocument.Pages[0] as PdfLoadedPage;
//Create list box.
PdfListBoxField listBoxField = new PdfListBoxField(loadedPage, "list1");
//Set the properties.
listBoxField.Bounds = new Syncfusion.Drawing.RectangleF(100, 60, 100, 50);
//Add the items to the list box.
listBoxField.Items.Add(new PdfListFieldItem("English", "English"));
listBoxField.Items.Add(new PdfListFieldItem("French", "French"));
listBoxField.Items.Add(new PdfListFieldItem("German", "German"));
//Select the item.
listBoxField.SelectedIndex = 2;
//Set the multi select option.
listBoxField.MultiSelect = true;
//Add the list box into PDF document
loadedDocument.Form.Fields.Add(listBoxField);
//Save the PDF document to stream.
MemoryStream stream = new MemoryStream();
loadedDocument.Save(stream);
//Close the document.
loadedDocument.Close(true);
//Save the stream into pdf file
//The operation in Save under Xamarin varies between Windows Phone, Android and iOS platforms. Please refer PDF/Xamarin section for respective code samples.
if (Device.OS == TargetPlatform.WinPhone || Device.OS == TargetPlatform.Windows)
{
Xamarin.Forms.DependencyService.Get<ISaveWindowsPhone>().Save("Form.pdf", "application/pdf", stream);
}
else
{
Xamarin.Forms.DependencyService.Get<ISave>().Save("Form.pdf", "application/pdf", stream);
}Adding the check Box field
You can create the check box field in PDF forms using PdfCheckBoxField class.
Please refer the below code snippet for adding the check box field in new PDF document.
//Create a new PDF document.
PdfDocument document = new PdfDocument();
//Add a new page to PDF document.
PdfPage page = document.Pages.Add();
//Create Check Box field.
PdfCheckBoxField checkBoxField = new PdfCheckBoxField(page, "CheckBox");
//Set check box properties.
checkBoxField.ToolTip = "Check Box";
checkBoxField.Bounds = new RectangleF(0, 20, 10, 10);
//Add the form field to the document.
document.Form.Fields.Add(checkBoxField);
//Save the document.
document.Save("Form.pdf");
//close the document
document.Close(true);'Create a new PDF document.
Dim document As New PdfDocument()
'Add a new page to PDF document.
Dim page As PdfPage = document.Pages.Add()
'Create Check Box field.
Dim checkBoxField As New PdfCheckBoxField(page, "CheckBox")
'Set check box properties.
checkBoxField.ToolTip = "Check Box"
checkBoxField.Bounds = New RectangleF(0, 20, 10, 10)
'Add the form field to the document.
document.Form.Fields.Add(checkBoxField)
'Save the document.
document.Save("Form.pdf")
'close the document
document.Close(True)//Create a new PDF document.
PdfDocument document = new PdfDocument();
//Add a new page to PDF document.
PdfPage page = document.Pages.Add();
//Create Check Box field.
PdfCheckBoxField checkBoxField = new PdfCheckBoxField(page, "CheckBox");
//Set check box properties.
checkBoxField.ToolTip = "Check Box";
checkBoxField.Bounds = new RectangleF(0, 20, 10, 10);
//Add the form field to the document.
document.Form.Fields.Add(checkBoxField);
//Save the PDF document to stream.
MemoryStream stream = new MemoryStream();
await document.SaveAsync(stream);
//Close the document.
document.Close(true);
//Save the stream as PDF document file in local machine. Refer to PDF/UWP section for respected code samples.
Save(stream, "Form.pdf");//Create a new PDF document.
PdfDocument document = new PdfDocument();
//Add a new page to PDF document.
PdfPage page = document.Pages.Add();
//Create Check Box field.
PdfCheckBoxField checkBoxField = new PdfCheckBoxField(page, "CheckBox");
//Set check box properties.
checkBoxField.ToolTip = "Check Box";
checkBoxField.Bounds = new Syncfusion.Drawing.RectangleF(0, 20, 10, 10);
//Add the form field to the document.
document.Form.Fields.Add(checkBoxField);
//Creating the stream object
MemoryStream stream = new MemoryStream();
//Save the PDF document to stream
document.Save(stream);
//If the position is not set to '0' then the PDF will be empty.
stream.Position = 0;
//Close the document.
document.Close(true);
//Defining the ContentType for pdf file.
string contentType = "application/pdf";
//Define the file name.
string fileName = "Form.pdf";
//Creates a FileContentResult object by using the file contents, content type, and file name.
return File(stream, contentType, fileName);//Create a new PDF document.
PdfDocument document = new PdfDocument();
//Add a new page to PDF document.
PdfPage page = document.Pages.Add();
//Create Check Box field.
PdfCheckBoxField checkBoxField = new PdfCheckBoxField(page, "CheckBox");
//Set check box properties.
checkBoxField.ToolTip = "Check Box";
checkBoxField.Bounds = new Syncfusion.Drawing.RectangleF(0, 20, 10, 10);
//Add the form field to the document.
document.Form.Fields.Add(checkBoxField);
//Save the PDF document to stream.
MemoryStream stream = new MemoryStream();
document.Save(stream);
//Close the document.
document.Close(true);
//Save the stream into pdf file
//The operation in Save under Xamarin varies between Windows Phone, Android and iOS platforms. Please refer PDF/Xamarin section for respective code samples.
if (Device.OS == TargetPlatform.WinPhone || Device.OS == TargetPlatform.Windows)
{
Xamarin.Forms.DependencyService.Get<ISaveWindowsPhone>().Save("Form.pdf", "application/pdf", stream);
}
else
{
Xamarin.Forms.DependencyService.Get<ISave>().Save("Form.pdf", "application/pdf", stream);
}Please refer the below code snippet for adding the check box field in existing PDF document.
//Load the existing PDF document.
PdfLoadedDocument loadedDocument = new PdfLoadedDocument(fileName);
//Create the form if the form does not exist in the loaded document
if(loadedDocument.Form==null)
loadedDocument.CreateForm();
//Load the page
PdfLoadedPage loadedPage = loadedDocument.Pages[0] as PdfLoadedPage;
//Create Check Box field.
PdfCheckBoxField checkBoxField = new PdfCheckBoxField(loadedPage, "CheckBox");
//Set check box properties.
checkBoxField.ToolTip = "Check Box";
checkBoxField.Bounds = new RectangleF(0, 20, 10, 10);
//Add the form field to the existing document.
loadedDocument.Form.Fields.Add(checkBoxField);
//Save the document.
loadedDocument.Save("Form.pdf");
//close the document
loadedDocument.Close(true);'Load the existing PDF document.
Dim loadedDocument As New PdfLoadedDocument(fileName)
'Create the form if the form does not exist in the loaded document
If loadedDocument.Form Is Nothing Then
loadedDocument.CreateForm()
End If
'Load the page
Dim loadedPage As PdfLoadedPage = TryCast(loadedDocument.Pages(0), PdfLoadedPage)
'Create Check Box field.
Dim checkBoxField As New PdfCheckBoxField(loadedPage, "CheckBox")
'Set check box properties.
checkBoxField.ToolTip = "Check Box"
checkBoxField.Bounds = New RectangleF(0, 20, 10, 10)
'Add the form field to the existing document.
loadedDocument.Form.Fields.Add(checkBoxField)
'Save the document.
loadedDocument.Save("Form.pdf")
'close the document
loadedDocument.Close(True)//Create the file open picker
var picker = new FileOpenPicker();
picker.FileTypeFilter.Add(".pdf");
//Browse and chose the file
StorageFile file = await picker.PickSingleFileAsync();
//Creates an empty PDF loaded document instance
PdfLoadedDocument loadedDocument = new PdfLoadedDocument();
//Loads or opens an existing PDF document through Open method of PdfLoadedDocument class
await loadedDocument.OpenAsync(file);
//Create the form if the form does not exist in the loaded document
if (loadedDocument.Form == null)
loadedDocument.CreateForm();
//Load the page
PdfLoadedPage loadedPage = loadedDocument.Pages[0] as PdfLoadedPage;
//Create Check Box field.
PdfCheckBoxField checkBoxField = new PdfCheckBoxField(loadedPage, "CheckBox");
//Set check box properties.
checkBoxField.ToolTip = "Check Box";
checkBoxField.Bounds = new RectangleF(0, 20, 10, 10);
//Add the form field to the existing document.
loadedDocument.Form.Fields.Add(checkBoxField);
//Save the PDF document to stream.
MemoryStream stream = new MemoryStream();
await loadedDocument.SaveAsync(stream);
//Close the document.
loadedDocument.Close(true);
//Save the stream as PDF document file in local machine. Refer to PDF/UWP section for respected code samples.
Save(stream, "Form.pdf");//Load the PDF document
FileStream docStream = new FileStream(fileName, FileMode.Open, FileAccess.Read);
PdfLoadedDocument loadedDocument = new PdfLoadedDocument(docStream);
//Create the form if the form does not exist in the loaded document
if (loadedDocument.Form == null)
loadedDocument.CreateForm();
//Load the page
PdfLoadedPage loadedPage = loadedDocument.Pages[0] as PdfLoadedPage;
//Create Check Box field.
PdfCheckBoxField checkBoxField = new PdfCheckBoxField(loadedPage, "CheckBox");
//Set check box properties.
checkBoxField.ToolTip = "Check Box";
checkBoxField.Bounds = new Syncfusion.Drawing.RectangleF(0, 20, 10, 10);
//Add the form field to the existing document.
loadedDocument.Form.Fields.Add(checkBoxField);
//Creating the stream object
MemoryStream stream = new MemoryStream();
//Save the PDF document to stream
loadedDocument.Save(stream);
//If the position is not set to '0' then the PDF will be empty.
stream.Position = 0;
//Close the document.
loadedDocument.Close(true);
//Defining the ContentType for pdf file.
string contentType = "application/pdf";
//Define the file name.
string fileName = "Form.pdf";
//Creates a FileContentResult object by using the file contents, content type, and file name.
return File(stream, contentType, fileName);//Load the file as stream
Stream docStream = typeof(App).GetTypeInfo().Assembly.GetManifestResourceStream("Sample.Assets.Sample.pdf");
PdfLoadedDocument loadedDocument = new PdfLoadedDocument(docStream);
//Create the form if the form does not exist in the loaded document
if (loadedDocument.Form == null)
loadedDocument.CreateForm();
//Load the page
PdfLoadedPage loadedPage = loadedDocument.Pages[0] as PdfLoadedPage;
//Create Check Box field.
PdfCheckBoxField checkBoxField = new PdfCheckBoxField(loadedPage, "CheckBox");
//Set check box properties.
checkBoxField.ToolTip = "Check Box";
checkBoxField.Bounds = new Syncfusion.Drawing.RectangleF(0, 20, 10, 10);
//Add the form field to the existing document.
loadedDocument.Form.Fields.Add(checkBoxField);
//Save the PDF document to stream.
MemoryStream stream = new MemoryStream();
loadedDocument.Save(stream);
//Close the document.
loadedDocument.Close(true);
//Save the stream into pdf file
//The operation in Save under Xamarin varies between Windows Phone, Android and iOS platforms. Please refer PDF/Xamarin section for respective code samples.
if (Device.OS == TargetPlatform.WinPhone || Device.OS == TargetPlatform.Windows)
{
Xamarin.Forms.DependencyService.Get<ISaveWindowsPhone>().Save("Form.pdf", "application/pdf", stream);
}
else
{
Xamarin.Forms.DependencyService.Get<ISave>().Save("Form.pdf", "application/pdf", stream);
}Adding the signature field
You can add the signature field in PDF forms using PdfSignatureField class.
Please refer the below code snippet for adding the signature field in new PDF document.
//Create a new PDF document.
PdfDocument document = new PdfDocument();
//Add a new page to PDF document.
PdfPage page = document.Pages.Add();
//Create PDF Signature field.
PdfSignatureField signatureField = new PdfSignatureField(page, "Signature");
//Set properties to the signature field.
signatureField.Bounds = new RectangleF(0, 400, 90, 20);
signatureField.ToolTip = "Signature";
//Add the form field to the document.
document.Form.Fields.Add(signatureField);
//Save the document.
document.Save("Form.pdf");
//Close the document
document.Close(true);'Create a new PDF document.
Dim document As New PdfDocument()
'Add a new page to PDF document.
Dim page As PdfPage = document.Pages.Add()
'Create PDF Signature field.
Dim signatureField As New PdfSignatureField(page, "Signature")
'Set properties to the signature field.
signatureField.Bounds = New RectangleF(0, 400, 90, 20)
signatureField.ToolTip = "Signature"
'Add the form field to the document.
document.Form.Fields.Add(signatureField)
'Save the document.
document.Save("Form.pdf")
'Close the document
document.Close(True)//Create a new PDF document.
PdfDocument document = new PdfDocument();
//Add a new page to PDF document.
PdfPage page = document.Pages.Add();
//Create PDF Signature field.
PdfSignatureField signatureField = new PdfSignatureField(page, "Signature");
//Set properties to the signature field.
signatureField.Bounds = new RectangleF(0, 400, 90, 20);
signatureField.ToolTip = "Signature";
//Add the form field to the document.
document.Form.Fields.Add(signatureField);
//Save the PDF document to stream.
MemoryStream stream = new MemoryStream();
await document.SaveAsync(stream);
//Close the document.
document.Close(true);
//Save the stream as PDF document file in local machine. Refer to PDF/UWP section for respected code samples.
Save(stream, "Form.pdf");//Create a new PDF document.
PdfDocument document = new PdfDocument();
//Add a new page to PDF document.
PdfPage page = document.Pages.Add();
//Create PDF Signature field.
PdfSignatureField signatureField = new PdfSignatureField(page, "Signature");
//Set properties to the signature field.
signatureField.Bounds = new Syncfusion.Drawing.RectangleF(0, 400, 90, 20);
signatureField.ToolTip = "Signature";
//Add the form field to the document.
document.Form.Fields.Add(signatureField);
//Creating the stream object
MemoryStream stream = new MemoryStream();
//Save the PDF document to stream
document.Save(stream);
//If the position is not set to '0' then the PDF will be empty.
stream.Position = 0;
//Close the document.
document.Close(true);
//Defining the ContentType for pdf file.
string contentType = "application/pdf";
//Define the file name.
string fileName = "Form.pdf";
//Creates a FileContentResult object by using the file contents, content type, and file name.
return File(stream, contentType, fileName);//Create a new PDF document.
PdfDocument document = new PdfDocument();
//Add a new page to PDF document.
PdfPage page = document.Pages.Add();
//Create PDF Signature field.
PdfSignatureField signatureField = new PdfSignatureField(page, "Signature");
//Set properties to the signature field.
signatureField.Bounds = new Syncfusion.Drawing.RectangleF(0, 400, 90, 20);
signatureField.ToolTip = "Signature";
//Add the form field to the document.
document.Form.Fields.Add(signatureField);
//Save the PDF document to stream.
MemoryStream stream = new MemoryStream();
document.Save(stream);
//Close the document.
document.Close(true);
//Save the stream into pdf file
//The operation in Save under Xamarin varies between Windows Phone, Android and iOS platforms. Please refer PDF/Xamarin section for respective code samples.
if (Device.OS == TargetPlatform.WinPhone || Device.OS == TargetPlatform.Windows)
{
Xamarin.Forms.DependencyService.Get<ISaveWindowsPhone>().Save("Form.pdf", "application/pdf", stream);
}
else
{
Xamarin.Forms.DependencyService.Get<ISave>().Save("Form.pdf", "application/pdf", stream);
}Please refer the below code snippet for adding the signature field in existing PDF document.
//Load the existing PDF document.
PdfLoadedDocument loadedDocument = new PdfLoadedDocument(fileName);
//Create the form if the form does not exist in the loaded document
if(loadedDocument.Form==null)
loadedDocument.CreateForm();
//Load the page
PdfLoadedPage loadedPage = loadedDocument.Pages[0] as PdfLoadedPage;
//Create PDF Signature field.
PdfSignatureField signatureField = new PdfSignatureField(loadedPage, "Signature");
//Set properties to the signature field.
signatureField.Bounds = new RectangleF(0, 400, 90, 20);
signatureField.ToolTip = "Signature";
//Add the form field to the existing document.
loadedDocument.Form.Fields.Add(signatureField);
//Save the document.
loadedDocument.Save("Form.pdf");
//Close the document
loadedDocument.Close(true);'Load the existing PDF document.
Dim loadedDocument As New PdfLoadedDocument(fileName)
'Create the form if the form does not exist in the loaded document
If loadedDocument.Form Is Nothing Then
loadedDocument.CreateForm()
End If
'Load the page
Dim loadedPage As PdfLoadedPage = TryCast(loadedDocument.Pages(0), PdfLoadedPage)
'Create PDF Signature field.
Dim signatureField As New PdfSignatureField(loadedPage, "Signature")
'Set properties to the signature field.
signatureField.Bounds = New RectangleF(0, 400, 90, 20)
signatureField.ToolTip = "Signature"
'Add the form field to the existing document.
loadedDocument.Form.Fields.Add(signatureField)
'Save the document.
loadedDocument.Save("Form.pdf")
'Close the document
loadedDocument.Close(True)//Create the file open picker
var picker = new FileOpenPicker();
picker.FileTypeFilter.Add(".pdf");
//Browse and chose the file
StorageFile file = await picker.PickSingleFileAsync();
//Creates an empty PDF loaded document instance
PdfLoadedDocument loadedDocument = new PdfLoadedDocument();
//Loads or opens an existing PDF document through Open method of PdfLoadedDocument class
await loadedDocument.OpenAsync(file);
//Create the form if the form does not exist in the loaded document
if (loadedDocument.Form == null)
loadedDocument.CreateForm();
//Load the page
PdfLoadedPage loadedPage = loadedDocument.Pages[0] as PdfLoadedPage;
//Create PDF Signature field.
PdfSignatureField signatureField = new PdfSignatureField(loadedPage, "Signature");
//Set properties to the signature field.
signatureField.Bounds = new RectangleF(0, 400, 90, 20);
signatureField.ToolTip = "Signature";
//Add the form field to the existing document.
loadedDocument.Form.Fields.Add(signatureField);
//Save the PDF document to stream.
MemoryStream stream = new MemoryStream();
await loadedDocument.SaveAsync(stream);
//Close the document.
loadedDocument.Close(true);
//Save the stream as PDF document file in local machine. Refer to PDF/UWP section for respected code samples.
Save(stream, "Form.pdf");//Load the PDF document
FileStream docStream = new FileStream(fileName, FileMode.Open, FileAccess.Read);
PdfLoadedDocument loadedDocument = new PdfLoadedDocument(docStream);
//Create the form if the form does not exist in the loaded document
if (loadedDocument.Form == null)
loadedDocument.CreateForm();
//Load the page
PdfLoadedPage loadedPage = loadedDocument.Pages[0] as PdfLoadedPage;
//Create PDF Signature field.
PdfSignatureField signatureField = new PdfSignatureField(loadedPage, "Signature");
//Set properties to the signature field.
signatureField.Bounds = new Syncfusion.Drawing.RectangleF(0, 400, 90, 20);
signatureField.ToolTip = "Signature";
//Add the form field to the existing document.
loadedDocument.Form.Fields.Add(signatureField);
//Creating the stream object
MemoryStream stream = new MemoryStream();
//Save the PDF document to stream
loadedDocument.Save(stream);
//If the position is not set to '0' then the PDF will be empty.
stream.Position = 0;
//Close the document.
loadedDocument.Close(true);
//Defining the ContentType for pdf file.
string contentType = "application/pdf";
//Define the file name.
string fileName = "Form.pdf";
//Creates a FileContentResult object by using the file contents, content type, and file name.
return File(stream, contentType, fileName);//Load the file as stream
Stream docStream = typeof(App).GetTypeInfo().Assembly.GetManifestResourceStream("Sample.Assets.Sample.pdf");
PdfLoadedDocument loadedDocument = new PdfLoadedDocument(docStream);
//Create the form if the form does not exist in the loaded document
if (loadedDocument.Form == null)
loadedDocument.CreateForm();
//Load the page
PdfLoadedPage loadedPage = loadedDocument.Pages[0] as PdfLoadedPage;
//Create PDF Signature field.
PdfSignatureField signatureField = new PdfSignatureField(loadedPage, "Signature");
//Set properties to the signature field.
signatureField.Bounds = new Syncfusion.Drawing.RectangleF(0, 400, 90, 20);
signatureField.ToolTip = "Signature";
//Add the form field to the existing document.
loadedDocument.Form.Fields.Add(signatureField);
//Save the PDF document to stream.
MemoryStream stream = new MemoryStream();
loadedDocument.Save(stream);
//Close the document.
loadedDocument.Close(true);
//Save the stream into pdf file
//The operation in Save under Xamarin varies between Windows Phone, Android and iOS platforms. Please refer PDF/Xamarin section for respective code samples.
if (Device.OS == TargetPlatform.WinPhone || Device.OS == TargetPlatform.Windows)
{
Xamarin.Forms.DependencyService.Get<ISaveWindowsPhone>().Save("Form.pdf", "application/pdf", stream);
}
else
{
Xamarin.Forms.DependencyService.Get<ISave>().Save("Form.pdf", "application/pdf", stream);
}Adding the button field
To create button fields in PDF forms, you can use PdfButtonField class.
The below code illustrates how to add the button field in new PDF document.
//Create a new PDF document.
PdfDocument document = new PdfDocument();
//Add a new page to PDF document.
PdfPage page = document.Pages.Add();
//Create a Button.
PdfButtonField buttonField = new PdfButtonField(page, "Click");
//Set properties to the Button field.
buttonField.Bounds = new RectangleF(0, 150, 90, 20);
buttonField.Text = "Click";
//Add the form field to the document.
document.Form.Fields.Add(buttonField);
//Save the document.
document.Save("Form.pdf");
//close the document
document.Close(true);'Create a new PDF document.
Dim document As New PdfDocument()
'Add a new page to PDF document.
Dim page As PdfPage = document.Pages.Add()
'Create a Button.
Dim buttonField As New PdfButtonField(page, "Click")
'Set properties to the Button field.
buttonField.Bounds = New RectangleF(0, 150, 90, 20)
buttonField.Text = "Click"
'Add the form field to the document.
document.Form.Fields.Add(buttonField)
'Save the document.
document.Save("Form.pdf")
'close the document
document.Close(True)//Create a new PDF document.
PdfDocument document = new PdfDocument();
//Add a new page to PDF document.
PdfPage page = document.Pages.Add();
//Create a Button.
PdfButtonField buttonField = new PdfButtonField(page, "Click");
//Set properties to the Button field.
buttonField.Bounds = new RectangleF(0, 150, 90, 20);
buttonField.Text = "Click";
//Add the form field to the document.
document.Form.Fields.Add(buttonField);
//Save the PDF document to stream.
MemoryStream stream = new MemoryStream();
await document.SaveAsync(stream);
//Close the document.
document.Close(true);
//Save the stream as PDF document file in local machine. Refer to PDF/UWP section for respected code samples.
Save(stream, "Form.pdf");//Create a new PDF document.
PdfDocument document = new PdfDocument();
//Add a new page to PDF document.
PdfPage page = document.Pages.Add();
//Create a Button.
PdfButtonField buttonField = new PdfButtonField(page, "Click");
//Set properties to the Button field.
buttonField.Bounds = new Syncfusion.Drawing.RectangleF(0, 150, 90, 20);
buttonField.Text = "Click";
//Add the form field to the document.
document.Form.Fields.Add(buttonField);
//Creating the stream object
MemoryStream stream = new MemoryStream();
//Save the PDF document to stream
document.Save(stream);
//If the position is not set to '0' then the PDF will be empty.
stream.Position = 0;
//Close the document.
document.Close(true);
//Defining the ContentType for pdf file.
string contentType = "application/pdf";
//Define the file name.
string fileName = "Form.pdf";
//Creates a FileContentResult object by using the file contents, content type, and file name.
return File(stream, contentType, fileName);//Create a new PDF document.
PdfDocument document = new PdfDocument();
//Add a new page to PDF document.
PdfPage page = document.Pages.Add();
//Create a Button.
PdfButtonField buttonField = new PdfButtonField(page, "Click");
//Set properties to the Button field.
buttonField.Bounds = new Syncfusion.Drawing.RectangleF(0, 150, 90, 20);
buttonField.Text = "Click";
//Add the form field to the document.
document.Form.Fields.Add(buttonField);
//Save the PDF document to stream.
MemoryStream stream = new MemoryStream();
document.Save(stream);
//Close the document.
document.Close(true);
//Save the stream into pdf file
//The operation in Save under Xamarin varies between Windows Phone, Android and iOS platforms. Please refer PDF/Xamarin section for respective code samples.
if (Device.OS == TargetPlatform.WinPhone || Device.OS == TargetPlatform.Windows)
{
Xamarin.Forms.DependencyService.Get<ISaveWindowsPhone>().Save("Form.pdf", "application/pdf", stream);
}
else
{
Xamarin.Forms.DependencyService.Get<ISave>().Save("Form.pdf", "application/pdf", stream);
}Please refer the below code snippet for adding the button field in existing PDF document.
//Load the existing PDF document.
PdfLoadedDocument loadedDocument = new PdfLoadedDocument(fileName);
//Create the form if the form does not exist in the loaded document
if (loadedDocument.Form == null)
loadedDocument.CreateForm();
//Load the page
PdfLoadedPage loadedPage = loadedDocument.Pages[0] as PdfLoadedPage;
//Create a Button and set properties to the Button field.
PdfButtonField buttonField = new PdfButtonField(loadedPage, "Click");
buttonField.Bounds = new RectangleF(0, 150, 90, 20);
buttonField.Text = "Click";
//Add the form field to the existing document.
loadedDocument.Form.Fields.Add(buttonField);
//Save the document.
loadedDocument.Save("Form.pdf");
//close the document
loadedDocument.Close(true);'Load the existing PDF document.
Dim loadedDocument As New PdfLoadedDocument(fileName)
'Create the form if the form does not exist in the loaded document
If loadedDocument.Form Is Nothing Then
loadedDocument.CreateForm()
End If
'Load the page
Dim loadedPage As PdfLoadedPage = TryCast(loadedDocument.Pages(0), PdfLoadedPage)
'Create a Button and set properties to the Button field.
Dim buttonField As New PdfButtonField(loadedPage, "Click")
buttonField.Bounds = New RectangleF(0, 150, 90, 20)
buttonField.Text = "Click"
'Add the form field to the existing document.
loadedDocument.Form.Fields.Add(buttonField)
'Save the document.
loadedDocument.Save("Form.pdf")
'close the document
loadedDocument.Close(True)//Create the file open picker
var picker = new FileOpenPicker();
picker.FileTypeFilter.Add(".pdf");
//Browse and chose the file
StorageFile file = await picker.PickSingleFileAsync();
//Creates an empty PDF loaded document instance
PdfLoadedDocument loadedDocument = new PdfLoadedDocument();
//Loads or opens an existing PDF document through Open method of PdfLoadedDocument class
await loadedDocument.OpenAsync(file);
//Create the form if the form does not exist in the loaded document
if (loadedDocument.Form == null)
loadedDocument.CreateForm();
//Load the page
PdfLoadedPage loadedPage = loadedDocument.Pages[0] as PdfLoadedPage;
//Create a Button and set properties to the Button field.
PdfButtonField buttonField = new PdfButtonField(loadedPage, "Click");
buttonField.Bounds = new RectangleF(0, 150, 90, 20);
buttonField.Text = "Click";
//Add the form field to the existing document.
loadedDocument.Form.Fields.Add(buttonField);
//Save the PDF document to stream.
MemoryStream stream = new MemoryStream();
await loadedDocument.SaveAsync(stream);
//Close the document.
loadedDocument.Close(true);
//Save the stream as PDF document file in local machine. Refer to PDF/UWP section for respected code samples.
Save(stream, "Form.pdf");//Load the PDF document
FileStream docStream = new FileStream(fileName, FileMode.Open, FileAccess.Read);
PdfLoadedDocument loadedDocument = new PdfLoadedDocument(docStream);
//Create the form if the form does not exist in the loaded document
if (loadedDocument.Form == null)
loadedDocument.CreateForm();
//Load the page
PdfLoadedPage loadedPage = loadedDocument.Pages[0] as PdfLoadedPage;
//Create a Button and set properties to the Button field.
PdfButtonField buttonField = new PdfButtonField(loadedPage, "Click");
buttonField.Bounds = new Syncfusion.Drawing.RectangleF(0, 150, 90, 20);
buttonField.Text = "Click";
//Add the form field to the existing document.
loadedDocument.Form.Fields.Add(buttonField);
//Creating the stream object
MemoryStream stream = new MemoryStream();
//Save the PDF document to stream
loadedDocument.Save(stream);
//If the position is not set to '0' then the PDF will be empty.
stream.Position = 0;
//Close the document.
loadedDocument.Close(true);
//Defining the ContentType for pdf file.
string contentType = "application/pdf";
//Define the file name.
string fileName = "Form.pdf";
//Creates a FileContentResult object by using the file contents, content type, and file name.
return File(stream, contentType, fileName);//Load the file as stream
Stream docStream = typeof(App).GetTypeInfo().Assembly.GetManifestResourceStream("Sample.Assets.Sample.pdf");
PdfLoadedDocument loadedDocument = new PdfLoadedDocument(docStream);
//Create the form if the form does not exist in the loaded document
if (loadedDocument.Form == null)
loadedDocument.CreateForm();
//Load the page
PdfLoadedPage loadedPage = loadedDocument.Pages[0] as PdfLoadedPage;
//Create a Button and set properties to the Button field.
PdfButtonField buttonField = new PdfButtonField(loadedPage, "Click");
buttonField.Bounds = new Syncfusion.Drawing.RectangleF(0, 150, 90, 20);
buttonField.Text = "Click";
//Add the form field to the existing document.
loadedDocument.Form.Fields.Add(buttonField);
//Save the PDF document to stream.
MemoryStream stream = new MemoryStream();
loadedDocument.Save(stream);
//Close the document.
loadedDocument.Close(true);
//Save the stream into pdf file
//The operation in Save under Xamarin varies between Windows Phone, Android and iOS platforms. Please refer PDF/Xamarin section for respective code samples.
if (Device.OS == TargetPlatform.WinPhone || Device.OS == TargetPlatform.Windows)
{
Xamarin.Forms.DependencyService.Get<ISaveWindowsPhone>().Save("Form.pdf", "application/pdf", stream);
}
else
{
Xamarin.Forms.DependencyService.Get<ISave>().Save("Form.pdf", "application/pdf", stream);
}Set appearance to the PDF form fields
After filling the form fields in the PDF document, it may appear empty due to the absence of the appearance dictionary. By setting false to the [SetDefaultAppearance] (https://help.syncfusion.com/cr/file-formats/Syncfusion.Pdf.Interactive.PdfForm.html#Syncfusion_Pdf_Interactive_PdfForm_SetDefaultAppearance_System_Boolean_) method in PdfForm class, you can create the appearance dictionary. By this, the text will be visible in all PDF Viewers.
The following code snippet explains how to set appearance to the PDF form fields.
//Load the PDF document
PdfLoadedDocument loadedDocument = new PdfLoadedDocument(fileName);
//Get the loaded form
PdfLoadedForm loadedForm = loadedDocument.Form;
//Set the default appearance
loadedForm.SetDefaultAppearance(false);
//Get the loaded form field
PdfLoadedTextBoxField loadedTextBoxField = loadedForm.Fields[0] as PdfLoadedTextBoxField;
loadedTextBoxField.Text = "Text";
//Save the document
loadedDocument.Save("Form.pdf");
//Close the document
loadedDocument.Close(true);'Load the PDF document
Dim loadedDocument As New PdfLoadedDocument(fileName)
'Get the loaded form
Dim loadedForm As PdfLoadedForm = loadedDocument.Form
'Set the default appearance
loadedForm.SetDefaultAppearance(False)
'Get the loaded form field
Dim loadedTextBoxField As PdfLoadedTextBoxField = TryCast(loadedForm.Fields(0), PdfLoadedTextBoxField)
loadedTextBoxField.Text = "Text"
'Save the document
loadedDocument.Save("Form.pdf")
'Close the document
loadedDocument.Close(True)//Create the file open picker
var picker = new FileOpenPicker();
picker.FileTypeFilter.Add(".pdf");
//Browse and choose the file
StorageFile file = await picker.PickSingleFileAsync();
//Creates an empty PDF loaded document instance
PdfLoadedDocument loadedDocument = new PdfLoadedDocument();
//Loads or opens an existing PDF document through Open method of PdfLoadedDocument class
await loadedDocument.OpenAsync(file);
//Get the loaded form
PdfLoadedForm loadedForm = loadedDocument.Form;
//Set the default appearance
loadedForm.SetDefaultAppearance(false);
//Get the loaded form field
PdfLoadedTextBoxField loadedTextBoxField = loadedForm.Fields[0] as PdfLoadedTextBoxField;
loadedTextBoxField.Text = "Text"
//Save the PDF document to stream
MemoryStream stream = new MemoryStream();
await loadedDocument.SaveAsync(stream);
//Close the document
loadedDocument.Close(true);
//Save the stream as PDF document file in local machine. Refer to the PDF/UWP section for respective code samples
Save(stream, "Form.pdf");//Load the PDF document
FileStream docStream = new FileStream(fileName, FileMode.Open, FileAccess.Read);
PdfLoadedDocument loadedDocument = new PdfLoadedDocument(docStream);
//Get the loaded form
PdfLoadedForm loadedForm = loadedDocument.Form;
//Set the default appearance
loadedForm.SetDefaultAppearance(false);
//Get the loaded form field
PdfLoadedTextBoxField loadedTextBoxField = loadedForm.Fields[0] as PdfLoadedTextBoxField;
loadedTextBoxField.Text ="text";
//Save the document into stream
MemoryStream stream = new MemoryStream();
loadedDocument.Save(stream);
stream.Position = 0;
//Close the document
loadedDocument.Close(true);
//Defining the content type for PDF file
string contentType = "application/pdf";
//Define the file name
string fileName = "Form.pdf";
//Creates a FileContentResult object by using the file contents, content type, and file name
return File(stream, contentType, fileName);//Load the file as stream
Stream docStream = typeof(App).GetTypeInfo().Assembly.GetManifestResourceStream("Sample.Assets.Sample.pdf");
PdfLoadedDocument loadedDocument = new PdfLoadedDocument(docStream);
//Get the loaded form
PdfLoadedForm loadedForm = loadedDocument.Form;
//Set the default appearance
loadedForm.SetDefaultAppearance(false);
//Get the loaded form field
PdfLoadedTextBoxField loadedTextBoxField = loadedForm.Fields[0] as PdfLoadedTextBoxField;
loadedTextBoxField.Text ="text";
//Save the PDF document to stream
MemoryStream stream = new MemoryStream();
loadedDocument.Save(stream);
//Close the document
loadedDocument.Close(true);
//Save the stream into PDF file
//The operation in Save under Xamarin varies between Windows Phone, Android, and iOS platforms. Refer to the PDF/Xamarin section for respective code samples
if (Device.RuntimePlatform == Device.UWP)
{
Xamarin.Forms.DependencyService.Get<ISaveWindowsPhone>().Save("Form.pdf", "application/pdf", stream);
}
else
{
Xamarin.Forms.DependencyService.Get<ISave>().Save("Form.pdf", "application/pdf", stream);
}Modifying the existing form field in PDF document
You can modify an existing form field by getting the field from the PdfFormFieldCollection. You can retrieve a field from the field collection by index or by field name.
The following code snippet explains how to modify an existing form field in a PDF document.
//Load the PDF document.
PdfLoadedDocument loadedDocument = new PdfLoadedDocument(fileName);
//Get the loaded form.
PdfLoadedForm loadedForm = loadedDocument.Form;
//Get the loaded form field and modify the properties.
PdfLoadedTextBoxField loadedTextBoxField= loadedForm.Fields[0] as PdfLoadedTextBoxField;
RectangleF newBounds = new RectangleF(100, 100, 150, 50);
loadedTextBoxField.Bounds = newBounds;
loadedTextBoxField.SpellCheck = true;
loadedTextBoxField.Text = "New text of the field.";
loadedTextBoxField.Password = false;
//Save the document.
loadedDocument.Save("sample.pdf");
//close the document
loadedDocument.Close(true);'Load the PDF document.
Dim loadedDocument As New PdfLoadedDocument(fileName)
'Get the loaded form.
Dim loadedForm As PdfLoadedForm = loadedDocument.Form
'Get the loaded form field and Modify the properties.
Dim loadedTextBoxField As PdfLoadedTextBoxField = TryCast(loadedForm.Fields(0), PdfLoadedTextBoxField)
Dim newBounds As New RectangleF(100, 100, 150, 50)
loadedTextBoxField.Bounds = newBounds
loadedTextBoxField.SpellCheck = True
loadedTextBoxField.Text = "New text of the field."
loadedTextBoxField.Password = False
'Save the document.
loadedDocument.Save("sample.pdf")
'close the document
loadedDocument.Close(True)//Create the file open picker
var picker = new FileOpenPicker();
picker.FileTypeFilter.Add(".pdf");
//Browse and chose the file
StorageFile file = await picker.PickSingleFileAsync();
//Creates an empty PDF loaded document instance
PdfLoadedDocument loadedDocument = new PdfLoadedDocument();
//Loads or opens an existing PDF document through Open method of PdfLoadedDocument class
await loadedDocument.OpenAsync(file);
//Get the loaded form.
PdfLoadedForm loadedForm = loadedDocument.Form;
//Get the loaded form field and modify the properties.
PdfLoadedTextBoxField loadedTextBoxField = loadedForm.Fields[0] as PdfLoadedTextBoxField;
RectangleF newBounds = new RectangleF(100, 100, 150, 50);
loadedTextBoxField.Bounds = newBounds;
loadedTextBoxField.SpellCheck = true;
loadedTextBoxField.Text = "New text of the field.";
loadedTextBoxField.Password = false;
//Save the PDF document to stream.
MemoryStream stream = new MemoryStream();
await loadedDocument.SaveAsync(stream);
//Close the document.
loadedDocument.Close(true);
//Save the stream as PDF document file in local machine. Refer to PDF/UWP section for respected code samples.
Save(stream, "sample.pdf");//Load the PDF document
FileStream docStream = new FileStream(fileName, FileMode.Open, FileAccess.Read);
PdfLoadedDocument loadedDocument = new PdfLoadedDocument(docStream);
//Get the loaded form.
PdfLoadedForm loadedForm = loadedDocument.Form;
//Get the loaded form field and modify the properties.
PdfLoadedTextBoxField loadedTextBoxField = loadedForm.Fields[0] as PdfLoadedTextBoxField;
RectangleF newBounds = new RectangleF(100, 100, 150, 50);
loadedTextBoxField.Bounds = newBounds;
loadedTextBoxField.SpellCheck = true;
loadedTextBoxField.Text = "New text of the field.";
loadedTextBoxField.Password = false;
//Save the document into stream.
MemoryStream stream = new MemoryStream();
loadedDocument.Save(stream);
stream.Position = 0;
//Close the document.
loadedDocument.Close(true);
//Defining the ContentType for pdf file.
string contentType = "application/pdf";
//Define the file name.
string fileName = "sample.pdf";
//Creates a FileContentResult object by using the file contents, content type, and file name.
return File(stream, contentType, fileName);//Load the file as stream
Stream docStream = typeof(App).GetTypeInfo().Assembly.GetManifestResourceStream("Sample.Assets.Sample.pdf");
PdfLoadedDocument loadedDocument = new PdfLoadedDocument(docStream);
//Get the loaded form.
PdfLoadedForm loadedForm = loadedDocument.Form;
//Get the loaded form field and modify the properties.
PdfLoadedTextBoxField loadedTextBoxField = loadedForm.Fields[0] as PdfLoadedTextBoxField;
Syncfusion.Drawing.RectangleF newBounds = new Syncfusion.Drawing.RectangleF(100, 100, 150, 50);
loadedTextBoxField.Bounds = newBounds;
loadedTextBoxField.SpellCheck = true;
loadedTextBoxField.Text = "New text of the field.";
loadedTextBoxField.Password = false;
//Save the PDF document to stream.
MemoryStream stream = new MemoryStream();
loadedDocument.Save(stream);
//Close the document.
loadedDocument.Close(true);
//Save the stream into pdf file
//The operation in Save under Xamarin varies between Windows Phone, Android and iOS platforms. Please refer PDF/Xamarin section for respective code samples.
if (Device.OS == TargetPlatform.WinPhone || Device.OS == TargetPlatform.Windows)
{
Xamarin.Forms.DependencyService.Get<ISaveWindowsPhone>().Save("sample.pdf", "application/pdf", stream);
}
else
{
Xamarin.Forms.DependencyService.Get<ISave>().Save("sample.pdf", "application/pdf", stream);
}Retrieving/Modifying the fore and back color of an existing form fields
You can retrieve/modify the fore and background color of existing form fields in a PDF document by using ForeColor and BackColor properties of the respective form fields. The following code snippet illustrate this.
//Load the PDF document
PdfLoadedDocument loadedDocument = new PdfLoadedDocument(fileName);
//Get the loaded form
PdfLoadedForm loadedForm = loadedDocument.Form;
//Get the loaded form field
PdfLoadedTextBoxField loadedTextBoxField = loadedForm.Fields[0] as PdfLoadedTextBoxField;
//Get fore color of the field
PdfColor foreColor = loadedTextBoxField.ForeColor;
//Set the fore color
loadedTextBoxField.ForeColor = new PdfColor(Color.Red);
//Get background color of the field
PdfColor backColor = loadedTextBoxField.BackColor;
//Set the background color
loadedTextBoxField.BackColor = new PdfColor(Color.Green);
//Save the document
loadedDocument.Save("Form.pdf");
//Close the document
loadedDocument.Close(true);'Load the PDF document
Dim loadedDocument As New PdfLoadedDocument(fileName)
'Get the loaded form
Dim loadedForm As PdfLoadedForm = loadedDocument.Form
'Get the loaded form field
Dim loadedTextBoxField As PdfLoadedTextBoxField = TryCast(loadedForm.Fields(0), PdfLoadedTextBoxField)
'Get fore color of the field
Dim foreColor As PdfColor = loadedTextBoxField.ForeColor
'Set the fore color
loadedTextBoxField.ForeColor = New PdfColor(Color.Red)
'Get background color of the field
Dim backColor As PdfColor = loadedTextBoxField.BackColor
'Set the background color
loadedTextBoxField.BackColor = New PdfColor(Color.Green)
'Save the document
loadedDocument.Save("Form.pdf")
'Close the document
loadedDocument.Close(True)//Create the file open picker
var picker = new FileOpenPicker();
picker.FileTypeFilter.Add(".pdf");
//Browse and choose the file
StorageFile file = await picker.PickSingleFileAsync();
//Creates an empty PDF loaded document instance
PdfLoadedDocument loadedDocument = new PdfLoadedDocument();
//Loads or opens an existing PDF document through Open method of PdfLoadedDocument class
await loadedDocument.OpenAsync(file);
//Get the loaded form
PdfLoadedForm loadedForm = loadedDocument.Form;
//Get the loaded form field
PdfLoadedTextBoxField loadedTextBoxField = loadedForm.Fields[0] as PdfLoadedTextBoxField;
//Get fore color of the field
PdfColor foreColor = loadedTextBoxField.ForeColor;
//Set the fore color
loadedTextBoxField.ForeColor = new PdfColor(255,0,0);
//Get background color of the field
PdfColor backColor = loadedTextBoxField.BackColor;
//Set the background color
loadedTextBoxField.BackColor = new PdfColor(0,255,0);
//Save the PDF document to stream
MemoryStream stream = new MemoryStream();
await loadedDocument.SaveAsync(stream);
//Close the document
loadedDocument.Close(true);
//Save the stream as PDF document file in local machine. Refer to the PDF/UWP section for respective code samples
Save(stream, "Form.pdf");//Load the PDF document
FileStream docStream = new FileStream(fileName, FileMode.Open, FileAccess.Read);
PdfLoadedDocument loadedDocument = new PdfLoadedDocument(docStream);
//Get the loaded form
PdfLoadedForm loadedForm = loadedDocument.Form;
//Get the loaded form field
PdfLoadedTextBoxField loadedTextBoxField = loadedForm.Fields[0] as PdfLoadedTextBoxField;
//Get fore color of the field
PdfColor foreColor = loadedTextBoxField.ForeColor;
//Set the fore color
loadedTextBoxField.ForeColor = new PdfColor(Color.Red);
//Get background color of the field
PdfColor backColor = loadedTextBoxField.BackColor;
//Set the background color
loadedTextBoxField.BackColor = new PdfColor(Color.Green);
//Save the document into stream
MemoryStream stream = new MemoryStream();
loadedDocument.Save(stream);
stream.Position = 0;
//Close the document
loadedDocument.Close(true);
//Defining the content type for PDF file
string contentType = "application/pdf";
//Define the file name
string fileName = "Form.pdf";
//Creates a FileContentResult object by using the file contents, content type, and file name
return File(stream, contentType, fileName);//Load the file as stream
Stream docStream = typeof(App).GetTypeInfo().Assembly.GetManifestResourceStream("Sample.Assets.Sample.pdf");
PdfLoadedDocument loadedDocument = new PdfLoadedDocument(docStream);
//Get the loaded form
PdfLoadedForm loadedForm = loadedDocument.Form;
//Get the loaded form field
PdfLoadedTextBoxField loadedTextBoxField = loadedForm.Fields[0] as PdfLoadedTextBoxField;
//Get fore color of the field
PdfColor foreColor = loadedTextBoxField.ForeColor;
//Set the fore color
loadedTextBoxField.ForeColor = new PdfColor(Syncfusion.Drawing.Color.Red);
//Get background color of the field
PdfColor backColor = loadedTextBoxField.BackColor;
//Set the background color
loadedTextBoxField.BackColor = new PdfColor(Syncfusion.Drawing.Color.Green);
//Save the PDF document to stream
MemoryStream stream = new MemoryStream();
loadedDocument.Save(stream);
//Close the document
loadedDocument.Close(true);
//Save the stream into PDF file
//The operation in Save under Xamarin varies between Windows Phone, Android, and iOS platforms. Refer to the PDF/Xamarin section for respective code samples
if (Device.RuntimePlatform == Device.UWP)
{
Xamarin.Forms.DependencyService.Get<ISaveWindowsPhone>().Save("Form.pdf", "application/pdf", stream);
}
else
{
Xamarin.Forms.DependencyService.Get<ISave>().Save("Form.pdf", "application/pdf", stream);
}Filling form fields in an existing PDF Document
Essential PDF allows you to fill the form fields using PdfLoadedField class.
Filling the text box field
You can fill a text box field using Text property of PdfLoadedTextBoxField class. The below code snippet illustrates this.
//Load the PDF document.
PdfLoadedDocument loadedDocument = new PdfLoadedDocument(fileName);
//Get the loaded form.
PdfLoadedForm loadedForm = loadedDocument.Form;
//Get the loaded text box field and fill it.
PdfLoadedTextBoxField loadedTextBoxField = loadedForm.Fields[0] as PdfLoadedTextBoxField;
loadedTextBoxField.Text = "First Name";
//Save the modified document.
loadedDocument.Save("sample.pdf");
//Close the document
loadedDocument.Close(true);'Load the PDF document.
Dim loadedDocument As New PdfLoadedDocument(fileName)
'Get the loaded form.
Dim loadedForm As PdfLoadedForm = loadedDocument.Form
'Get the loaded text box field and fill it.
Dim loadedTextBoxField As PdfLoadedTextBoxField = TryCast(loadedForm.Fields(0), PdfLoadedTextBoxField)
loadedTextBoxField.Text = "First Name"
'Save the modified document.
loadedDocument.Save("sample.pdf")
'Close the document
loadedDocument.Close(True)//Create the file open picker
var picker = new FileOpenPicker();
picker.FileTypeFilter.Add(".pdf");
//Browse and chose the file
StorageFile file = await picker.PickSingleFileAsync();
//Creates an empty PDF loaded document instance
PdfLoadedDocument loadedDocument = new PdfLoadedDocument();
//Loads or opens an existing PDF document through Open method of PdfLoadedDocument class
await loadedDocument.OpenAsync(file);
//Get the loaded form.
PdfLoadedForm loadedForm = loadedDocument.Form;
//Get the loaded text box field and fill it.
PdfLoadedTextBoxField loadedTextBoxField = loadedForm.Fields[0] as PdfLoadedTextBoxField;
loadedTextBoxField.Text = "First Name";
//Save the PDF document to stream.
MemoryStream stream = new MemoryStream();
await loadedDocument.SaveAsync(stream);
//Close the document.
loadedDocument.Close(true);
//Save the stream as PDF document file in local machine. Refer to PDF/UWP section for respected code samples.
Save(stream, "sample.pdf");//Load the PDF document
FileStream docStream = new FileStream(fileName, FileMode.Open, FileAccess.Read);
PdfLoadedDocument loadedDocument = new PdfLoadedDocument(docStream);
//Get the loaded form.
PdfLoadedForm loadedForm = loadedDocument.Form;
//Get the loaded text box field and fill it.
PdfLoadedTextBoxField loadedTextBoxField = loadedForm.Fields[0] as PdfLoadedTextBoxField;
loadedTextBoxField.Text = "First Name";
//Save the document into stream.
MemoryStream stream = new MemoryStream();
loadedDocument.Save(stream);
stream.Position = 0;
//Close the document.
loadedDocument.Close(true);
//Defining the ContentType for pdf file.
string contentType = "application/pdf";
//Define the file name.
string fileName = "sample.pdf";
//Creates a FileContentResult object by using the file contents, content type, and file name.
return File(stream, contentType, fileName);//Load the file as stream
Stream docStream = typeof(App).GetTypeInfo().Assembly.GetManifestResourceStream("Sample.Assets.Sample.pdf");
PdfLoadedDocument loadedDocument = new PdfLoadedDocument(docStream);
//Get the loaded form.
PdfLoadedForm loadedForm = loadedDocument.Form;
//Get the loaded text box field and fill it.
PdfLoadedTextBoxField loadedTextBoxField = loadedForm.Fields[0] as PdfLoadedTextBoxField;
loadedTextBoxField.Text = "First Name";
//Save the PDF document to stream.
MemoryStream stream = new MemoryStream();
loadedDocument.Save(stream);
//Close the document.
loadedDocument.Close(true);
//Save the stream into pdf file
//The operation in Save under Xamarin varies between Windows Phone, Android and iOS platforms. Please refer PDF/Xamarin section for respective code samples.
if (Device.OS == TargetPlatform.WinPhone || Device.OS == TargetPlatform.Windows)
{
Xamarin.Forms.DependencyService.Get<ISaveWindowsPhone>().Save("sample.pdf", "application/pdf", stream);
}
else
{
Xamarin.Forms.DependencyService.Get<ISave>().Save("sample.pdf", "application/pdf", stream);
}Filling the combo box field
You can fill a combo box field using SelectedValue or SelectedIndex properties of PdfLoadedComboBoxField class. Please refer the below code snippet to fill the combo box field in an existing PDF document.
//Load the PDF document.
PdfLoadedDocument loadedDocument = new PdfLoadedDocument(fileName);
//Get the loaded form.
PdfLoadedForm loadedForm = loadedDocument.Form;
//Get the loaded combo box field and modify the properties
PdfLoadedComboBoxField loadedComboboxField = loadedForm.Fields[1] as PdfLoadedComboBoxField;
loadedComboboxField.SelectedIndex = 1;
//Save the modified document.
loadedDocument.Save("sample.pdf");
//Close the document
loadedDocument.Close(true);'Load the PDF document.
Dim loadedDocument As New PdfLoadedDocument(fileName)
'Get the loaded form.
Dim loadedForm As PdfLoadedForm = loadedDocument.Form
'Get the loaded combo box field and modify the properties
Dim loadedComboboxField As PdfLoadedComboBoxField = TryCast(loadedForm.Fields(1), PdfLoadedComboBoxField)
loadedComboboxField.SelectedIndex = 1
'Save the modified document.
loadedDocument.Save("sample.pdf")
'Close the document
loadedDocument.Close(True)//Create the file open picker
var picker = new FileOpenPicker();
picker.FileTypeFilter.Add(".pdf");
//Browse and chose the file
StorageFile file = await picker.PickSingleFileAsync();
//Creates an empty PDF loaded document instance
PdfLoadedDocument loadedDocument = new PdfLoadedDocument();
//Loads or opens an existing PDF document through Open method of PdfLoadedDocument class
await loadedDocument.OpenAsync(file);
//Get the loaded form.
PdfLoadedForm loadedForm = loadedDocument.Form;
//Get the loaded combo box field and modify the properties
PdfLoadedComboBoxField loadedComboboxField = loadedForm.Fields[1] as PdfLoadedComboBoxField;
loadedComboboxField.SelectedIndex = 1;
//Save the PDF document to stream.
MemoryStream stream = new MemoryStream();
await loadedDocument.SaveAsync(stream);
//Close the document.
loadedDocument.Close(true);
//Save the stream as PDF document file in local machine. Refer to PDF/UWP section for respected code samples.
Save(stream, "sample.pdf");//Load the PDF document
FileStream docStream = new FileStream(fileName, FileMode.Open, FileAccess.Read);
PdfLoadedDocument loadedDocument = new PdfLoadedDocument(docStream);
//Get the loaded form.
PdfLoadedForm loadedForm = loadedDocument.Form;
//Get the loaded combo box field and modify the properties
PdfLoadedComboBoxField loadedComboboxField = loadedForm.Fields[1] as PdfLoadedComboBoxField;
loadedComboboxField.SelectedIndex = 1;
//Save the document into stream.
MemoryStream stream = new MemoryStream();
loadedDocument.Save(stream);
stream.Position = 0;
//Close the document.
loadedDocument.Close(true);
//Defining the ContentType for pdf file.
string contentType = "application/pdf";
//Define the file name.
string fileName = "sample.pdf";
//Creates a FileContentResult object by using the file contents, content type, and file name
return File(stream, contentType, fileName);//Load the file as stream
Stream docStream = typeof(App).GetTypeInfo().Assembly.GetManifestResourceStream("Sample.Assets.Sample.pdf");
PdfLoadedDocument loadedDocument = new PdfLoadedDocument(docStream);
//Get the loaded form.
PdfLoadedForm loadedForm = loadedDocument.Form;
//Get the loaded combo box field and modify the properties
PdfLoadedComboBoxField loadedComboboxField = loadedForm.Fields[1] as PdfLoadedComboBoxField;
loadedComboboxField.SelectedIndex = 1;
//Save the PDF document to stream.
MemoryStream stream = new MemoryStream();
loadedDocument.Save(stream);
//Close the document.
loadedDocument.Close(true);
//Save the stream into pdf file
//The operation in Save under Xamarin varies between Windows Phone, Android and iOS platforms. Please refer PDF/Xamarin section for respective code samples.
if (Device.OS == TargetPlatform.WinPhone || Device.OS == TargetPlatform.Windows)
{
Xamarin.Forms.DependencyService.Get<ISaveWindowsPhone>().Save("sample.pdf", "application/pdf", stream);
}
else
{
Xamarin.Forms.DependencyService.Get<ISave>().Save("sample.pdf", "application/pdf", stream);
}Filling the radio button field
You can fill a radio button field using SelectedValue or SelectedIndex properties of PdfLoadedRadioButtonListField class. Please refer the below code snippet to fill the radio button field in an existing PDF document.
//Load the PDF document.
PdfLoadedDocument loadedDocument = new PdfLoadedDocument(fileName);
//Get the loaded form.
PdfLoadedForm loadedForm = loadedDocument.Form;
//Get the loaded radio button field.
PdfLoadedRadioButtonListField loadedRadioButtonField = loadedForm.Fields[3] as PdfLoadedRadioButtonListField;
loadedRadioButtonField.SelectedIndex = 1;
//Save the modified document.
loadedDocument.Save("sample.pdf");
//Close the document
loadedDocument.Close(true);'Load the PDF document.
Dim loadedDocument As New PdfLoadedDocument(fileName)
'Get the loaded form.
Dim loadedForm As PdfLoadedForm = loadedDocument.Form
'Get the loaded radio button field.
Dim loadedRadioButtonField As PdfLoadedRadioButtonListField = TryCast(loadedForm.Fields(3), PdfLoadedRadioButtonListField)
loadedRadioButtonField.SelectedIndex = 1
'Save the modified document.
loadedDocument.Save("sample.pdf")
'Close the document
loadedDocument.Close(True)//Create the file open picker
var picker = new FileOpenPicker();
picker.FileTypeFilter.Add(".pdf");
//Browse and chose the file
StorageFile file = await picker.PickSingleFileAsync();
//Creates an empty PDF loaded document instance
PdfLoadedDocument loadedDocument = new PdfLoadedDocument();
//Loads or opens an existing PDF document through Open method of PdfLoadedDocument class
await loadedDocument.OpenAsync(file);
//Get the loaded form.
PdfLoadedForm loadedForm = loadedDocument.Form;
//Get the loaded radio button field.
PdfLoadedRadioButtonListField loadedRadioButtonField = loadedForm.Fields[3] as PdfLoadedRadioButtonListField;
loadedRadioButtonField.SelectedIndex = 1;
//Save the PDF document to stream.
MemoryStream stream = new MemoryStream();
await loadedDocument.SaveAsync(stream);
//Close the document.
loadedDocument.Close(true);
//Save the stream as PDF document file in local machine. Refer to PDF/UWP section for respected code samples.
Save(stream, "sample.pdf");//Load the PDF document
FileStream docStream = new FileStream(fileName, FileMode.Open, FileAccess.Read);
PdfLoadedDocument loadedDocument = new PdfLoadedDocument(docStream);
//Get the loaded form.
PdfLoadedForm loadedForm = loadedDocument.Form;
//Get the loaded radio button field.
PdfLoadedRadioButtonListField loadedRadioButtonField = loadedForm.Fields[3] as PdfLoadedRadioButtonListField;
loadedRadioButtonField.SelectedIndex = 1;
//Save the document into stream.
MemoryStream stream = new MemoryStream();
loadedDocument.Save(stream);
stream.Position = 0;
//Close the document.
loadedDocument.Close(true);
//Defining the ContentType for pdf file.
string contentType = "application/pdf";
//Define the file name.
string fileName = "sample.pdf";
//Creates a FileContentResult object by using the file contents, content type, and file name.
return File(stream, contentType, fileName);//Load the file as stream
Stream docStream = typeof(App).GetTypeInfo().Assembly.GetManifestResourceStream("Sample.Assets.Sample.pdf");
PdfLoadedDocument loadedDocument = new PdfLoadedDocument(docStream);
//Get the loaded form.
PdfLoadedForm loadedForm = loadedDocument.Form;
//Get the loaded radio button field.
PdfLoadedRadioButtonListField loadedRadioButtonField = loadedForm.Fields[0] as PdfLoadedRadioButtonListField;
loadedRadioButtonField.SelectedIndex = 1;
//Save the PDF document to stream.
MemoryStream stream = new MemoryStream();
loadedDocument.Save(stream);
//Close the document.
loadedDocument.Close(true);
//Save the stream into pdf file
//The operation in Save under Xamarin varies between Windows Phone, Android and iOS platforms. Please refer PDF/Xamarin section for respective code samples.
if (Device.OS == TargetPlatform.WinPhone || Device.OS == TargetPlatform.Windows)
{
Xamarin.Forms.DependencyService.Get<ISaveWindowsPhone>().Save("sample.pdf", "application/pdf", stream);
}
else
{
Xamarin.Forms.DependencyService.Get<ISave>().Save("sample.pdf", "application/pdf", stream);
}Filling the list box field
The below code snippet illustrates how to fill the list box field in an existing PDF document, using SelectedIndex property of PdfLoadedListBoxField class.
//Load the PDF document.
PdfLoadedDocument loadedDocument = new PdfLoadedDocument(fileName);
//Get the loaded form.
PdfLoadedForm loadedForm = loadedDocument.Form;
//Fill list box.
PdfLoadedListBoxField loadedListBox = loadedForm.Fields[2] as PdfLoadedListBoxField;
// Fill list box and Modify the list box select index
loadedListBox.SelectedIndex = new int[2] { 1, 2 };
//Save the modified document.
loadedDocument.Save("sample.pdf");
//Close the document
loadedDocument.Close(true);'Load the existing PDF document.
Dim loadedDocument As New PdfLoadedDocument(fileName)
'Get the loaded form.
Dim loadedForm As PdfLoadedForm = loadedDocument.Form
'Fill list box and Modify the list box select index
Dim loadedListBox As PdfLoadedListBoxField = TryCast(loadedForm.Fields(0), PdfLoadedListBoxField)
loadedListBox.SelectedIndex = New Integer(1) {1, 2}
'Save the modified document.
loadedDocument.Save("sample.pdf")
'close the document
loadedDocument.Close(True)//Create the file open picker
var picker = new FileOpenPicker();
picker.FileTypeFilter.Add(".pdf");
//Browse and chose the file
StorageFile file = await picker.PickSingleFileAsync();
//Creates an empty PDF loaded document instance
PdfLoadedDocument loadedDocument = new PdfLoadedDocument();
//Loads or opens an existing PDF document through Open method of PdfLoadedDocument class
await loadedDocument.OpenAsync(file);
//Get the loaded form.
PdfLoadedForm loadedForm = loadedDocument.Form;
//Fill list box.
PdfLoadedListBoxField loadedListBox = loadedForm.Fields[2] as PdfLoadedListBoxField;
// Fill list box and Modify the list box select index
loadedListBox.SelectedIndex = new int[2] { 1, 2 };
//Save the PDF document to stream.
MemoryStream stream = new MemoryStream();
await loadedDocument.SaveAsync(stream);
//Close the document.
loadedDocument.Close(true);
//Save the stream as PDF document file in local machine. Refer to PDF/UWP section for respected code samples.
Save(stream, "sample.pdf");//Load the PDF document
FileStream docStream = new FileStream(fileName, FileMode.Open, FileAccess.Read);
PdfLoadedDocument loadedDocument = new PdfLoadedDocument(docStream);
//Get the loaded form.
PdfLoadedForm loadedForm = loadedDocument.Form;
//Fill list box.
PdfLoadedListBoxField loadedListBox = loadedForm.Fields[2] as PdfLoadedListBoxField;
// Fill list box and Modify the list box select index
loadedListBox.SelectedIndex = new int[2] { 1, 2 };
//Save the document into stream.
MemoryStream stream = new MemoryStream();
loadedDocument.Save(stream);
stream.Position = 0;
//Close the document.
loadedDocument.Close(true);
//Defining the ContentType for pdf file.
string contentType = "application/pdf";
//Define the file name.
string fileName = "sample.pdf";
//Creates a FileContentResult object by using the file contents, content type, and file name.
return File(stream, contentType, fileName);//Load the file as stream
Stream docStream = typeof(App).GetTypeInfo().Assembly.GetManifestResourceStream("Sample.Assets.Sample.pdf");
PdfLoadedDocument loadedDocument = new PdfLoadedDocument(docStream);
//Get the loaded form.
PdfLoadedForm loadedForm = loadedDocument.Form;
//Fill list box.
PdfLoadedListBoxField loadedListBox = loadedForm.Fields[2] as PdfLoadedListBoxField;
// Fill list box and Modify the list box select index
loadedListBox.SelectedIndex = new int[2] { 1, 2 };
//Save the PDF document to stream.
MemoryStream stream = new MemoryStream();
loadedDocument.Save(stream);
//Close the document.
loadedDocument.Close(true);
//Save the stream into pdf file
//The operation in Save under Xamarin varies between Windows Phone, Android and iOS platforms. Please refer PDF/Xamarin section for respective code samples.
if (Device.OS == TargetPlatform.WinPhone || Device.OS == TargetPlatform.Windows)
{
Xamarin.Forms.DependencyService.Get<ISaveWindowsPhone>().Save("sample.pdf", "application/pdf", stream);
}
else
{
Xamarin.Forms.DependencyService.Get<ISave>().Save("sample.pdf", "application/pdf", stream);
}Filling the check Box field
You can fill a check box field by enabling Checked property of PdfLoadedCheckBoxField class. Please refer the below code snippet to fill the check box field.
//Load the PDF document.
PdfLoadedDocument loadedDocument = new PdfLoadedDocument(fileName);
//Get the loaded form.
PdfLoadedForm loadedForm = loadedDocument.Form;
//load the check box from field collection
PdfLoadedCheckBoxField loadedCheckBoxField = loadedForm.Fields[0] as PdfLoadedCheckBoxField;
// fill the checkbox .
loadedCheckBoxField.Items[0].Checked = true;
//Check the checkbox if it is not grouped.
loadedCheckBoxField.Checked = true;
//Save the modified document.
loadedDocument.Save("sample.pdf");
//close the document
loadedDocument.Close(true);'Load the PDF document.
Dim loadedDocument As New PdfLoadedDocument(fileName)
'Get the loaded form.
Dim loadedForm As PdfLoadedForm = loadedDocument.Form
'load the check box from field collection
Dim loadedCheckBoxField As PdfLoadedCheckBoxField = TryCast(loadedForm.Fields(0), PdfLoadedCheckBoxField)
'Fill the checkbox.
loadedCheckBoxField.Items(0).Checked = True
'Check the checkbox if it is not grouped.
loadedCheckBoxField.Checked = True
'Save the modified document.
loadedDocument.Save("sample.pdf")
'Close the document
loadedDocument.Close(True)//Create the file open picker
var picker = new FileOpenPicker();
picker.FileTypeFilter.Add(".pdf");
//Browse and chose the file
StorageFile file = await picker.PickSingleFileAsync();
//Creates an empty PDF loaded document instance
PdfLoadedDocument loadedDocument = new PdfLoadedDocument();
//Loads or opens an existing PDF document through Open method of PdfLoadedDocument class
await loadedDocument.OpenAsync(file);
//Get the loaded form.
PdfLoadedForm loadedForm = loadedDocument.Form;
//load the check box from field collection
PdfLoadedCheckBoxField loadedCheckBoxField = loadedForm.Fields[0] as PdfLoadedCheckBoxField;
// fill the checkbox .
loadedCheckBoxField.Items[0].Checked = true;
//Check the checkbox if it is not grouped.
loadedCheckBoxField.Checked = true;
//Save the PDF document to stream.
MemoryStream stream = new MemoryStream();
await loadedDocument.SaveAsync(stream);
//Close the document.
loadedDocument.Close(true);
//Save the stream as PDF document file in local machine. Refer to PDF/UWP section for respected code samples.
Save(stream, "sample.pdf");//Load the PDF document
FileStream docStream = new FileStream(fileName, FileMode.Open, FileAccess.Read);
PdfLoadedDocument loadedDocument = new PdfLoadedDocument(docStream);
//Get the loaded form.
PdfLoadedForm loadedForm = loadedDocument.Form;
//load the check box from field collection
PdfLoadedCheckBoxField loadedCheckBoxField = loadedForm.Fields[0] as PdfLoadedCheckBoxField;
// fill the checkbox .
loadedCheckBoxField.Items[0].Checked = true;
//Check the checkbox if it is not grouped.
loadedCheckBoxField.Checked = true;
//Save the document into stream.
MemoryStream stream = new MemoryStream();
loadedDocument.Save(stream);
stream.Position = 0;
//Close the document.
loadedDocument.Close(true);
//Defining the ContentType for pdf file.
string contentType = "application/pdf";
//Define the file name.
string fileName = "sample.pdf";
//Creates a FileContentResult object by using the file contents, content type, and file name.
return File(stream, contentType, fileName);//Load the file as stream
Stream docStream = typeof(App).GetTypeInfo().Assembly.GetManifestResourceStream("Sample.Assets.Sample.pdf");
PdfLoadedDocument loadedDocument = new PdfLoadedDocument(docStream);
//Get the loaded form.
PdfLoadedForm loadedForm = loadedDocument.Form;
//load the check box from field collection
PdfLoadedCheckBoxField loadedCheckBoxField = loadedForm.Fields[0] as PdfLoadedCheckBoxField;
// fill the checkbox .
loadedCheckBoxField.Items[0].Checked = true;
//Check the checkbox if it is not grouped.
loadedCheckBoxField.Checked = true;
//Save the PDF document to stream.
MemoryStream stream = new MemoryStream();
loadedDocument.Save(stream);
//Close the document.
loadedDocument.Close(true);
//Save the stream into pdf file
//The operation in Save under Xamarin varies between Windows Phone, Android and iOS platforms. Please refer PDF/Xamarin section for respective code samples.
if (Device.OS == TargetPlatform.WinPhone || Device.OS == TargetPlatform.Windows)
{
Xamarin.Forms.DependencyService.Get<ISaveWindowsPhone>().Save("sample.pdf", "application/pdf", stream);
}
else
{
Xamarin.Forms.DependencyService.Get<ISave>().Save("sample.pdf", "application/pdf", stream);
}Filling the signature field
The below code snippet illustrates how to fill the signature field with certificate using Certificate property.
//Load the PDF document.
PdfLoadedDocument loadedDocument = new PdfLoadedDocument(fileName);
PdfLoadedPage loadedPage = loadedDocument.Pages[0] as PdfLoadedPage;
//Get the loaded form.
PdfLoadedForm loadedForm = loadedDocument.Form;
//Create PDF Certificate.
PdfCertificate certificate = new PdfCertificate("Pdf.pfx", "password");
//Load the signature field from field collection and fill this with certificate
PdfLoadedSignatureField loadedSignatureField = loadedForm.Fields[0] as PdfLoadedSignatureField;
loadedSignatureField.Signature = new PdfSignature(loadedPage);
loadedSignatureField.Signature.Certificate = certificate;
loadedSignatureField.Signature.Reason = "Reason";
//Save the modified document.
loadedDocument.Save("output.pdf");
//Close the document
loadedDocument.Close(true);'Load the PDF document.
Dim loadedDocument As New PdfLoadedDocument(fileName)
Dim loadedPage As PdfLoadedPage = TryCast(loadedDocument.Pages(0), PdfLoadedPage)
'Get the loaded form.
Dim loadedForm As PdfLoadedForm = loadedDocument.Form
'Create PDF Certificate.
Dim certificate As New PdfCertificate("Pdf.pfx", "password")
'Load the signature field from field collection and fill with certificate
Dim loadedSignatureField As PdfLoadedSignatureField = TryCast(loadedForm.Fields(0), PdfLoadedSignatureField)
loadedSignatureField.Signature = New PdfSignature(loadedPage)
loadedSignatureField.Signature.Certificate = certificate
loadedSignatureField.Signature.Reason = "Reason"
'Save the modified document.
loadedDocument.Save("output.pdf")
'Close the document
loadedDocument.Close(True)//Create the file open picker
var picker = new FileOpenPicker();
picker.FileTypeFilter.Add(".pdf");
//Browse and chose the file
StorageFile file = await picker.PickSingleFileAsync();
//Creates an empty PDF loaded document instance
PdfLoadedDocument loadedDocument = new PdfLoadedDocument();
//Loads or opens an existing PDF document through Open method of PdfLoadedDocument class
await loadedDocument.OpenAsync(file);
PdfLoadedPage loadedPage = loadedDocument.Pages[0] as PdfLoadedPage;
//Get the loaded form
PdfLoadedForm loadedForm = loadedDocument.Form;
//Create PDF Certificate
Stream certificateStream = typeof(MainPage).GetTypeInfo().Assembly.GetManifestResourceStream("Sample.Assets.Data.PDF.pfx");
PdfCertificate certificate = new PdfCertificate(certificateStream, "syncfusion");
//Load the signature field from field collection and fill this with certificate
PdfLoadedSignatureField loadedSignatureField = loadedForm.Fields[9] as PdfLoadedSignatureField;
loadedSignatureField.Signature = new PdfSignature();
loadedSignatureField.Signature.Certificate = certificate;
loadedSignatureField.Signature.Reason = "Reason";
//Save the PDF document to stream.
MemoryStream stream = new MemoryStream();
await loadedDocument.SaveAsync(stream);
//Close the document.
loadedDocument.Close(true);
//Save the stream as PDF document file in local machine. Refer to PDF/UWP section for respected code samples.
Save(stream, "output.pdf");//Load the PDF document
FileStream docStream = new FileStream(fileName, FileMode.Open, FileAccess.Read);
PdfLoadedDocument loadedDocument = new PdfLoadedDocument(docStream);
PdfLoadedPage loadedPage = loadedDocument.Pages[0] as PdfLoadedPage;
//Get the loaded form
PdfLoadedForm loadedForm = loadedDocument.Form;
//Create PDF Certificate
FileStream certificateStream = new FileStream("PDF.pfx", FileMode.Open, FileAccess.Read);
PdfCertificate certificate = new PdfCertificate(certificateStream, "syncfusion");
//Load the signature field from field collection and fill this with certificate
PdfLoadedSignatureField loadedSignatureField = loadedForm.Fields[9] as PdfLoadedSignatureField
loadedSignatureField.Signature = new PdfSignature();
loadedSignatureField.Signature.Certificate = certificate;
loadedSignatureField.Signature.Reason = "Reason";
//Save the document into stream.
MemoryStream stream = new MemoryStream();
loadedDocument.Save(stream);
stream.Position = 0;
//Close the document.
loadedDocument.Close(true);
//Defining the ContentType for pdf file.
string contentType = "application/pdf";
//Define the file name.
string fileName = "output.pdf";
//Creates a FileContentResult object by using the file contents, content type, and file name.
return File(stream, contentType, fileName);//Load the file as stream
Stream docStream = typeof(App).GetTypeInfo().Assembly.GetManifestResourceStream("Sample.Assets.Sample.pdf");
PdfLoadedDocument loadedDocument = new PdfLoadedDocument(docStream);
PdfLoadedPage loadedPage = loadedDocument.Pages[0] as PdfLoadedPage;
//Get the loaded form
PdfLoadedForm loadedForm = loadedDocument.Form;
//Create PDF Certificate
Stream certificateStream = typeof(MainPage).GetTypeInfo().Assembly.GetManifestResourceStream("Sample.Assets.Data.PDF.pfx");
PdfCertificate certificate = new PdfCertificate(certificateStream, "syncfusion");
//Load the signature field from field collection and fill this with certificate
PdfLoadedSignatureField loadedSignatureField = loadedForm.Fields[9] as PdfLoadedSignatureField;
loadedSignatureField.Signature = new PdfSignature();
loadedSignatureField.Signature.Certificate = certificate;
loadedSignatureField.Signature.Reason = "Reason";
//Save the PDF document to stream.
MemoryStream stream = new MemoryStream();
loadedDocument.Save(stream);
//Close the document.
loadedDocument.Close(true);
//Save the stream into pdf file
//The operation in Save under Xamarin varies between Windows Phone, Android and iOS platforms. Please refer PDF/Xamarin section for respective code samples.
if (Device.OS == TargetPlatform.WinPhone || Device.OS == TargetPlatform.Windows)
{
Xamarin.Forms.DependencyService.Get<ISaveWindowsPhone>().Save("output.pdf", "application/pdf", stream);
}
else
{
Xamarin.Forms.DependencyService.Get<ISave>().Save("output.pdf", "application/pdf", stream);
}Enumerate the form fields
All the form fields are maintained in PdfLoadedFormFieldCollection class. You can enumerate the fields from this form field collection and fill them.
The following code example illustrates this.
//Load the PDF document.
PdfLoadedDocument document = new PdfLoadedDocument(fileName);
//Get the loaded form.
PdfLoadedForm form = document.Form;
PdfLoadedFormFieldCollection fields = form.Fields;
//Enumerates the form fields.
for (int i = 0; i < fields.Count; i++)
{
if (fields[i] is PdfLoadedTextBoxField)
{
PdfLoadedTextBoxField loadedTextBoxField = fields[i] as PdfLoadedTextBoxField;
loadedTextBoxField.Text = "Text";
}
}
//Save and close the modified document.
document.Save(OutputFileName);
document.Close(true);'Load the PDF document.
Dim document As New PdfLoadedDocument(fileName)
'Get the loaded form.
Dim form As PdfLoadedForm = document.Form
Dim fields As PdfLoadedFormFieldCollection = form.Fields
'Enumerate the form fields.
For i As Integer = 0 To fields.Count - 1
If TypeOf fields(i) Is PdfLoadedTextBoxField Then
Dim loadedTextBoxField As PdfLoadedTextBoxField = TryCast(fields(i), PdfLoadedTextBoxField)
loadedTextBoxField.Text = "Text"
End If
Next i
'Save and close the modified document.
document.Save(OutputFileName)
document.Close(True)//Create the file open picker
var picker = new FileOpenPicker();
picker.FileTypeFilter.Add(".pdf");
//Browse and chose the file
StorageFile file = await picker.PickSingleFileAsync();
//Creates an empty PDF loaded document instance
PdfLoadedDocument document = new PdfLoadedDocument();
//Loads or opens an existing PDF document through Open method of PdfLoadedDocument class
await document.OpenAsync(file);
//Get the loaded form.
PdfLoadedForm form = document.Form;
PdfLoadedFormFieldCollection fields = form.Fields;
//Enumerates the form fields.
for (int i = 0; i < fields.Count; i++)
{
if (fields[i] is PdfLoadedTextBoxField)
{
PdfLoadedTextBoxField loadedTextBoxField = fields[i] as PdfLoadedTextBoxField;
loadedTextBoxField.Text = "Text";
}
}
//Save the PDF document to stream.
MemoryStream stream = new MemoryStream();
await document.SaveAsync(stream);
//Close the document.
document.Close(true);
//Save the stream as PDF document file in local machine. Refer to PDF/UWP section for respected code samples.
Save(stream, "output.pdf");//Load the PDF document
FileStream docStream = new FileStream(fileName, FileMode.Open, FileAccess.Read);
PdfLoadedDocument document = new PdfLoadedDocument(docStream);
//Get the loaded form.
PdfLoadedForm form = document.Form;
PdfLoadedFormFieldCollection fields = form.Fields;
//Enumerates the form fields.
for (int i = 0; i < fields.Count; i++)
{
if (fields[i] is PdfLoadedTextBoxField)
{
PdfLoadedTextBoxField loadedTextBoxField = fields[i] as PdfLoadedTextBoxField;
loadedTextBoxField.Text = "Text";
}
}
//Save the document into stream.
MemoryStream stream = new MemoryStream();
document.Save(stream);
stream.Position = 0;
//Close the document.
document.Close(true);
//Defining the ContentType for pdf file.
string contentType = "application/pdf";
//Define the file name.
string fileName = "output.pdf";
//Creates a FileContentResult object by using the file contents, content type, and file name.
return File(stream, contentType, fileName);//Load the file as stream
Stream docStream = typeof(App).GetTypeInfo().Assembly.GetManifestResourceStream("Sample.Assets.Sample.pdf");
PdfLoadedDocument document = new PdfLoadedDocument(docStream);
//Get the loaded form.
PdfLoadedForm form = document.Form;
PdfLoadedFormFieldCollection fields = form.Fields;
//Enumerates the form fields.
for (int i = 0; i < fields.Count; i++)
{
if (fields[i] is PdfLoadedTextBoxField)
{
PdfLoadedTextBoxField loadedTextBoxField = fields[i] as PdfLoadedTextBoxField;
loadedTextBoxField.Text = "Text";
}
}
//Save the PDF document to stream.
MemoryStream stream = new MemoryStream();
document.Save(stream);
//Close the document.
document.Close(true);
//Save the stream into pdf file
//The operation in Save under Xamarin varies between Windows Phone, Android and iOS platforms. Please refer PDF/Xamarin section for respective code samples.
if (Device.OS == TargetPlatform.WinPhone || Device.OS == TargetPlatform.Windows)
{
Xamarin.Forms.DependencyService.Get<ISaveWindowsPhone>().Save("output.pdf", "application/pdf", stream);
}
else
{
Xamarin.Forms.DependencyService.Get<ISave>().Save("output.pdf", "application/pdf", stream);
}TryGetField
To get a form field from an existing document using the field name, you can use the TryGetField method in the PdfFormFieldCollection class. It specifies whether the particular field is available in the form or not by returning a boolean value.
The below code snippet explains how to get the field from collection using TryGetField method.
// Load the document.
PdfLoadedDocument doc = new PdfLoadedDocument(fileName);
// Load the form from the loaded document.
PdfLoadedForm form = doc.Form;
// Load the form field collections from the form.
PdfLoadedFormFieldCollection fieldCollection = form.Fields as PdfLoadedFormFieldCollection;
PdfLoadedField loadedField = null;
// Get the field using TryGetField Method.
if (fieldCollection.TryGetField("f1-1", out loadedField))
{
(loadedField as PdfLoadedTextBoxField).Text = "1";
}
//Save and close the modified document.
doc.Save("output.pdf");
doc.Close(true);' Load the document.
Dim loadedDocument As New PdfLoadedDocument(fileName)
' Load the form from the loaded document.
Dim form As PdfLoadedForm = loadedDocument.Form
' Load the form field collections from the form.
Dim fieldCollection As PdfLoadedFormFieldCollection = TryCast(form.Fields, PdfLoadedFormFieldCollection)
Dim loadedField As PdfLoadedField = Nothing
' Get the field using TryGetField Method.
If fieldCollection.TryGetField("f1-1", loadedField) Then
TryCast(loadedField, PdfLoadedTextBoxField).Text = "1"
End If
'Save and close the modified document.
loadedDocument.Save("output.pdf")
loadedDocument.Close(True)//Create the file open picker
var picker = new FileOpenPicker();
picker.FileTypeFilter.Add(".pdf");
//Browse and chose the file
StorageFile file = await picker.PickSingleFileAsync();
//Creates an empty PDF loaded document instance
PdfLoadedDocument doc = new PdfLoadedDocument();
//Loads or opens an existing PDF document through Open method of PdfLoadedDocument class
await doc.OpenAsync(file);
// Load the form from the loaded document.
PdfLoadedForm form = doc.Form;
// Load the form field collections from the form.
PdfLoadedFormFieldCollection fieldCollection = form.Fields as PdfLoadedFormFieldCollection;
PdfLoadedField loadedField = null;
// Get the field using TryGetField Method.
if (fieldCollection.TryGetField("f1-1", out loadedField))
{
(loadedField as PdfLoadedTextBoxField).Text = "1";
}
//Save the PDF document to stream.
MemoryStream stream = new MemoryStream();
await doc.SaveAsync(stream);
//Close the document.
doc.Close(true);
//Save the stream as PDF document file in local machine. Refer to PDF/UWP section for respected code samples.
Save(stream, "output.pdf");//Load the PDF document
FileStream docStream = new FileStream(fileName, FileMode.Open, FileAccess.Read);
PdfLoadedDocument doc = new PdfLoadedDocument(docStream);
// Load the form from the loaded document.
PdfLoadedForm form = doc.Form;
// Load the form field collections from the form.
PdfLoadedFormFieldCollection fieldCollection = form.Fields as PdfLoadedFormFieldCollection;
PdfLoadedField loadedField = null;
// Get the field using TryGetField Method.
if (fieldCollection.TryGetField("f1-1", out loadedField))
{
(loadedField as PdfLoadedTextBoxField).Text = "1";
}
//Save the document into stream.
MemoryStream stream = new MemoryStream();
doc.Save(stream);
stream.Position = 0;
//Close the document.
doc.Close(true);
//Defining the ContentType for pdf file.
string contentType = "application/pdf";
//Define the file name.
string fileName = "output.pdf";
//Creates a FileContentResult object by using the file contents, content type, and file name.
return File(stream, contentType, fileName);//Load the file as stream
Stream docStream = typeof(App).GetTypeInfo().Assembly.GetManifestResourceStream("Sample.Assets.Sample.pdf");
PdfLoadedDocument doc = new PdfLoadedDocument(docStream);
// Load the form from the loaded document.
PdfLoadedForm form = doc.Form;
// Load the form field collections from the form.
PdfLoadedFormFieldCollection fieldCollection = form.Fields as PdfLoadedFormFieldCollection;
PdfLoadedField loadedField = null;
// Get the field using TryGetField Method.
if (fieldCollection.TryGetField("f1-1", out loadedField))
{
(loadedField as PdfLoadedTextBoxField).Text = "1";
}
//Save the PDF document to stream.
MemoryStream stream = new MemoryStream();
doc.Save(stream);
//Close the document.
doc.Close(true);
//Save the stream into pdf file
//The operation in Save under Xamarin varies between Windows Phone, Android and iOS platforms. Please refer PDF/Xamarin section for respective code samples.
if (Device.OS == TargetPlatform.WinPhone || Device.OS == TargetPlatform.Windows)
{
Xamarin.Forms.DependencyService.Get<ISaveWindowsPhone>().Save("output.pdf", "application/pdf", stream);
}
else
{
Xamarin.Forms.DependencyService.Get<ISave>().Save("output.pdf", "application/pdf", stream);
}TryGetValue
To get the field value from the given field name, you can use TryGetValue method in PdfFormFieldCollection class. It specifies whether the particular field is available in the form or not by returning a boolean value.
Please refer the below code snippet to get the field value from collection using TryGetValue method.
// Load the document.
PdfLoadedDocument loadedDocument = new PdfLoadedDocument(filename);
// Load the form from the loaded document.
PdfLoadedForm form = loadedDocument.Form;
// Load the form field collections from the form.
PdfLoadedFormFieldCollection fieldCollection = form.Fields as PdfLoadedFormFieldCollection;
string fieldValue = string.Empty;
// Get the field value using TryGetValue Method
fieldCollection.TryGetValue("f1-2", out fieldValue);
//Save and close the modified document.
loadedDocument.Save("output.pdf");
loadedDocument.Close(true);' Load the document.
Dim loadedDocument As New PdfLoadedDocument(filename)
' Load the form from the loaded document.
Dim form As PdfLoadedForm = loadedDocument.Form
' Load the form field collections from the form.
Dim fieldCollection As PdfLoadedFormFieldCollection = TryCast(form.Fields, PdfLoadedFormFieldCollection)
Dim fieldValue As String = String.Empty
' Get the field value using TryGetValue Method
fieldCollection.TryGetValue("f1-2", fieldValue)
'Save and close the modified document.
loadedDocument.Save("output.pdf")
loadedDocument.Close(True)//Create the file open picker
var picker = new FileOpenPicker();
picker.FileTypeFilter.Add(".pdf");
//Browse and chose the file
StorageFile file = await picker.PickSingleFileAsync();
//Creates an empty PDF loaded document instance
PdfLoadedDocument loadedDocument = new PdfLoadedDocument();
//Loads or opens an existing PDF document through Open method of PdfLoadedDocument class
await loadedDocument.OpenAsync(file);
// Load the form from the loaded document
PdfLoadedForm form = loadedDocument.Form;
// Load the form field collections from the form
PdfLoadedFormFieldCollection fieldCollection = form.Fields as PdfLoadedFormFieldCollection;
string fieldValue = string.Empty;
// Get the field value using TryGetValue Method
fieldCollection.TryGetValue("f1-2", out fieldValue);
//Save the PDF document to stream
MemoryStream stream = new MemoryStream();
await loadedDocument.SaveAsync(stream);
//Close the document
loadedDocument.Close(true);
//Save the stream as PDF document file in local machine. Refer to PDF/UWP section for respected code samples
Save(stream, "output.pdf");//Load the PDF document
FileStream docStream = new FileStream(fileName, FileMode.Open, FileAccess.Read);
PdfLoadedDocument loadedDocument = new PdfLoadedDocument(docStream);
// Load the form from the loaded document.
PdfLoadedForm form = loadedDocument.Form;
// Load the form field collections from the form.
PdfLoadedFormFieldCollection fieldCollection = form.Fields as PdfLoadedFormFieldCollection;
string fieldValue = string.Empty;
// Get the field value using TryGetValue Method
fieldCollection.TryGetValue("FirstName", out fieldValue);
//Save the document into stream.
MemoryStream stream = new MemoryStream();
loadedDocument.Save(stream);
stream.Position = 0;
//Close the document.
loadedDocument.Close(true);
//Defining the ContentType for pdf file.
string contentType = "application/pdf";
//Define the file name.
string fileName = "Form.pdf";
//Creates a FileContentResult object by using the file contents, content type, and file name.
return File(stream, contentType, fileName);//Load the file as stream
Stream docStream = typeof(App).GetTypeInfo().Assembly.GetManifestResourceStream("Sample.Assets.Sample.pdf");
PdfLoadedDocument loadedDocument = new PdfLoadedDocument(docStream);
// Load the form from the loaded document.
PdfLoadedForm form = loadedDocument.Form;
// Load the form field collections from the form.
PdfLoadedFormFieldCollection fieldCollection = form.Fields as PdfLoadedFormFieldCollection;
string fieldValue = string.Empty;
// Get the field value using TryGetValue Method
fieldCollection.TryGetValue("FirstName", out fieldValue);
//Save the PDF document to stream.
MemoryStream stream = new MemoryStream();
loadedDocument.Save(stream);
//Close the document.
loadedDocument.Close(true);
//Save the stream into pdf file
//The operation in Save under Xamarin varies between Windows Phone, Android and iOS platforms. Please refer PDF/Xamarin section for respective code samples.
if (Device.OS == TargetPlatform.WinPhone || Device.OS == TargetPlatform.Windows)
{
Xamarin.Forms.DependencyService.Get<ISaveWindowsPhone>().Save("output.pdf", "application/pdf", stream);
}
else
{
Xamarin.Forms.DependencyService.Get<ISave>().Save("output.pdf", "application/pdf", stream);
}Fill the XFA form fields along with Acroform in a same API
The static XFA document contains both the XFA and Acroform.
The Essential PDF supports filling both the XFA and Acroform in a same instance (Fills the XFA form via Acroform instance) by enabling the EnableXfaFormFill property available in the PdfLoadedForm class.
The following code snippet illustrates how to fill XFA forms via Acroform API
//Load the existing XFA PDF document
PdfLoadedDocument loadedDocument = new PdfLoadedDocument("Form.pdf");
//Get the existing Acroform
PdfLoadedForm acroform = loadedDocument.Form;
//Enable XFA form filling
acroform.EnableXfaFormFill = true;
//Get the existing text box field
PdfLoadedTextBoxField firstName = acroform.Fields["FirstName"] as PdfLoadedTextBoxField;
//Set text
firstName.Text = "Simon";
PdfLoadedTextBoxField lastName = acroform.Fields["LastName"] as PdfLoadedTextBoxField;
//Set text
lastName.Text = "Bistro";
//Save the document
loadedDocument.Save("output.pdf");
//Close the document
loadedDocument.Close(true);'Load the existing XFA PDF document
Dim loadedDocument As PdfLoadedDocument = New PdfLoadedDocument("Form.pdf")
'Get the existing Acroform
Dim acroform As PdfLoadedForm = loadedDocument.Form
'Enable XFA form filling
acroform.EnableXfaFormFill = True
'Get the existing text box field
Dim firstName As PdfLoadedTextBoxField = TryCast(acroform.Fields("FirstName"), PdfLoadedTextBoxField)
'Set text
firstName.Text = "Simon"
Dim lastName As PdfLoadedTextBoxField = TryCast(acroform.Fields("LastName"), PdfLoadedTextBoxField)
'Set text
lastName.Text = "Bistro"
'Save the document
loadedDocument.Save("output.pdf")
'Close the document
loadedDocument.Close(True)//Create the file open picker
var picker = new FileOpenPicker();
picker.FileTypeFilter.Add(".pdf");
//Browse and choose the file
StorageFile file = await picker.PickSingleFileAsync();
//Creates an empty PDF loaded document instance
PdfLoadedDocument loadedDocument = new PdfLoadedDocument();
//Get the existing Acroform
PdfLoadedForm acroform = loadedDocument.Form;
//Enable XFA form filling
acroform.EnableXfaFormFill = true;
//Get the existing text box field
PdfLoadedTextBoxField firstName = acroform.Fields["FirstName"] as PdfLoadedTextBoxField;
//Set text
firstName.Text = "Simon";
PdfLoadedTextBoxField lastName = acroform.Fields["LastName"] as PdfLoadedTextBoxField;
//Set text
lastName.Text = "Bistro";
//Save the PDF document to stream
MemoryStream stream = new MemoryStream();
await loadedDocument.SaveAsync(stream);
//Close the document
loadedDocument.Close(true);
//Save the stream as PDF document file in local machine. Refer to the PDF/UWP section for respective code samples
Save(stream, "Form.pdf");//Load the PDF document
FileStream docStream = new FileStream(fileName, FileMode.Open, FileAccess.Read);
PdfLoadedDocument loadedDocument = new PdfLoadedDocument(docStream);
//Get the existing Acroform
PdfLoadedForm acroform = loadedDocument.Form;
//Enable XFA form filling
acroform.EnableXfaFormFill = true;
//Get the existing text box field
PdfLoadedTextBoxField firstName = acroform.Fields["FirstName"] as PdfLoadedTextBoxField;
//Set text
firstName.Text = "Simon";
PdfLoadedTextBoxField lastName = acroform.Fields["LastName"] as PdfLoadedTextBoxField;
//Set text
lastName.Text = "Bistro";
//Creating the stream object
MemoryStream stream = new MemoryStream();
//Save the document as stream
loadedDocument.Save(stream);
//If the position is not set to '0', then the PDF will be empty
stream.Position = 0;
//Close the document
loadedDocument.Close(true);
//Defining the ContentType for PDF file
string contentType = "application/pdf";
//Define the file name
string fileName = "Form.pdf";
//Creates a FileContentResult object by using the file contents, content type, and file name.
return File(stream, contentType, fileName);Removing editing capability of form fields
The form field editing or filling capabilities can be removed by either flattening the PDF document or by marking the form or field as read only.
Essential PDF provides support to Flatten a form field by removing the existing form field and replacing it with graphical objects that would resemble the form field and cannot be edited.
Please refer the sample for flattening the form fields in new PDF document.
//Create a new PDF document.
PdfDocument document = new PdfDocument();
//Add a new page to PDF document.
PdfPage page = document.Pages.Add();
//Create a Text box field and add the properties.
PdfTextBoxField textBoxField = new PdfTextBoxField(page, "FirstName");
textBoxField.Bounds = new RectangleF(0, 0, 100, 20);
textBoxField.ToolTip = "First Name";
//Flatten the whole form field
document.Form.Flatten = true;
//Flattens the first field //form.Fields[0].Flatten = true;
//Add the form field to the document.
document.Form.Fields.Add(textBoxField);
//Save the document.
document.Save("Form.pdf");
//close the document
document.Close(true);'Create a new PDF document.
Dim document As New PdfDocument()
'Add a new page to PDF document.
Dim page As PdfPage = document.Pages.Add()
'Create a Text box field and add the properties.
Dim textBoxField As New PdfTextBoxField(page, "FirstName")
textBoxField.Bounds = New RectangleF(0, 0, 100, 20)
textBoxField.ToolTip = "First Name"
'Flatten the whole form field
document.Form.Flatten = True
'Add the form field to the document.
document.Form.Fields.Add(textBoxField)
'Save the PDF document.
document.Save("Form.pdf")
'close the document
document.Close(True)//Create a new PDF document
PdfDocument document = new PdfDocument();
//Add a new page to PDF document
PdfPage page = document.Pages.Add();
//Create a Text box field and add the properties
PdfTextBoxField textBoxField = new PdfTextBoxField(page, "FirstName");
textBoxField.Bounds = new RectangleF(0, 0, 100, 20);
textBoxField.ToolTip = "First Name";
//Flatten the whole form field
document.Form.Flatten = true;
//Flattens the first field //form.Fields[0].Flatten = true;
//Add the form field to the document
document.Form.Fields.Add(textBoxField);
//Save the PDF document to stream
MemoryStream stream = new MemoryStream();
await document.SaveAsync(stream);
//Close the document
document.Close(true);
//Save the stream as PDF document file in local machine. Refer to PDF/UWP section for respected code samples
Save(stream, "Form.pdf");//Create a new PDF document
PdfDocument document = new PdfDocument();
//Add a new page to PDF document
PdfPage page = document.Pages.Add();
//Create a Text box field and add the properties
PdfTextBoxField textBoxField = new PdfTextBoxField(page, "FirstName");
textBoxField.Bounds = new RectangleF(0, 0, 100, 20);
textBoxField.ToolTip = "First Name";
//Flatten the whole form field
document.Form.Flatten = true;
//Flattens the first field //form.Fields[0].Flatten = true;
//Add the form field to the document
document.Form.Fields.Add(textBoxField);
//Save the document into stream
MemoryStream stream = new MemoryStream();
document.Save(stream);
stream.Position = 0;
//Close the document
document.Close(true);
//Defining the ContentType for pdf file
string contentType = "application/pdf";
//Define the file name.
string fileName = "Form.pdf";
//Creates a FileContentResult object by using the file contents, content type, and file name
return File(stream, contentType, fileName);//Create a new PDF document
PdfDocument document = new PdfDocument();
//Add a new page to PDF document
PdfPage page = document.Pages.Add();
//Create a Text box field and add the properties
PdfTextBoxField textBoxField = new PdfTextBoxField(page, "FirstName");
textBoxField.Bounds = new Syncfusion.Drawing.RectangleF(0, 0, 100, 20);
textBoxField.ToolTip = "First Name";
//Flatten the whole form field
document.Form.Flatten = true;
//Flattens the first field //form.Fields[0].Flatten = true;
//Add the form field to the document
document.Form.Fields.Add(textBoxField);
//Save the PDF document to stream
MemoryStream stream = new MemoryStream();
document.Save(stream);
//Close the document
document.Close(true);
//Save the stream into pdf file
//The operation in Save under Xamarin varies between Windows Phone, Android and iOS platforms. Please refer PDF/Xamarin section for respective code sample
if (Device.OS == TargetPlatform.WinPhone || Device.OS == TargetPlatform.Windows)
{
Xamarin.Forms.DependencyService.Get<ISaveWindowsPhone>().Save("Form.pdf", "application/pdf", stream);
}
else
{
Xamarin.Forms.DependencyService.Get<ISave>().Save("Form.pdf", "application/pdf", stream);
}Please refer the sample for flattening the form fields in existing PDF document.
//Load the PDF document.
PdfLoadedDocument loadedDocument = new PdfLoadedDocument(fileName);
//Get the loaded form.
PdfLoadedForm loadedForm = loadedDocument.Form;
PdfLoadedFormFieldCollection fields = loadedForm.Fields;
//Get the loaded text box field
PdfLoadedTextBoxField loadedTextBoxField = fields[0] as PdfLoadedTextBoxField;
loadedTextBoxField.Text = "Text";
//Flatten the whole form.
loadedForm.Flatten = true;
//Save and close the modified document.
loadedDocument.Save("output.pdf");
loadedDocument.Close(true);'Load the PDF document.
Dim loadedDocument As New PdfLoadedDocument(fileName)
'Get the loaded form.
Dim loadedForm As PdfLoadedForm = loadedDocument.Form
Dim fields As PdfLoadedFormFieldCollection = loadedForm.Fields
'Get the loaded text box field
Dim loadedTextBoxField As PdfLoadedTextBoxField = TryCast(fields(0), PdfLoadedTextBoxField)
loadedTextBoxField.Text = "Text"
'Flatten the whole form.
loadedForm.Flatten = True
'Save and close the modified document.
loadedDocument.Save("output.pdf")
loadedDocument.Close(True)//Create the file open picker
var picker = new FileOpenPicker();
picker.FileTypeFilter.Add(".pdf");
//Browse and chose the file
StorageFile file = await picker.PickSingleFileAsync();
//Creates an empty PDF loaded document instance
PdfLoadedDocument loadedDocument = new PdfLoadedDocument();
//Loads or opens an existing PDF document through Open method of PdfLoadedDocument class
await loadedDocument.OpenAsync(file);
//Get the loaded form
PdfLoadedForm loadedForm = loadedDocument.Form;
PdfLoadedFormFieldCollection fields = loadedForm.Fields;
//Get the loaded text box field
PdfLoadedTextBoxField loadedTextBoxField = fields[0] as PdfLoadedTextBoxField;
loadedTextBoxField.Text = "Text";
//Flatten the whole form
loadedForm.Flatten = true;
//Save the PDF document to stream
MemoryStream stream = new MemoryStream();
await loadedDocument.SaveAsync(stream);
//Close the document
loadedDocument.Close(true);
//Save the stream as PDF document file in local machine. Refer to PDF/UWP section for respected code samples
Save(stream, "output.pdf");//Load the PDF document
FileStream docStream = new FileStream(fileName, FileMode.Open, FileAccess.Read);
PdfLoadedDocument loadedDocument = new PdfLoadedDocument(docStream);
//Get the loaded form.
PdfLoadedForm loadedForm = loadedDocument.Form;
PdfLoadedFormFieldCollection fields = loadedForm.Fields;
//Get the loaded text box field
PdfLoadedTextBoxField loadedTextBoxField = fields[0] as PdfLoadedTextBoxField;
loadedTextBoxField.Text = "Text";
//Flatten the whole form.
loadedForm.Flatten = true;
//Save the document into stream
MemoryStream stream = new MemoryStream();
loadedDocument.Save(stream);
stream.Position = 0;
//Close the document
loadedDocument.Close(true);
//Defining the ContentType for pdf file
string contentType = "application/pdf";
//Define the file name
string fileName = "output.pdf";
//Creates a FileContentResult object by using the file contents, content type, and file name
return File(stream, contentType, fileName);//Load the file as stream
Stream docStream = typeof(App).GetTypeInfo().Assembly.GetManifestResourceStream("Sample.Assets.Sample.pdf");
PdfLoadedDocument loadedDocument = new PdfLoadedDocument(docStream);
//Get the loaded form.
PdfLoadedForm loadedForm = loadedDocument.Form;
PdfLoadedFormFieldCollection fields = loadedForm.Fields;
//Get the loaded text box field
PdfLoadedTextBoxField loadedTextBoxField = fields[0] as PdfLoadedTextBoxField;
loadedTextBoxField.Text = "Text";
//Flatten the whole form.
loadedForm.Flatten = true;
//Save the PDF document to stream
MemoryStream stream = new MemoryStream();
loadedDocument.Save(stream);
//Close the document
loadedDocument.Close(true);
//Save the stream into pdf file
//The operation in Save under Xamarin varies between Windows Phone, Android and iOS platforms. Please refer PDF/Xamarin section for respective code samples
if (Device.OS == TargetPlatform.WinPhone || Device.OS == TargetPlatform.Windows)
{
Xamarin.Forms.DependencyService.Get<ISaveWindowsPhone>().Save("output.pdf", "application/pdf", stream);
}
else
{
Xamarin.Forms.DependencyService.Get<ISave>().Save("output.pdf", "application/pdf", stream);
}NOTE
The form fields will be flattened only after the PDF document is saved.
You can also flatten the form fields before saving the PDF document
Please refer the code sample to flatten the form fields before saving the PDF document
//Load a PDF document
PdfLoadedDocument loadedDocument = new PdfLoadedDocument("input.pdf");
//Get the loaded form.
PdfLoadedForm loadedForm = loadedDocument.Form;
//Flatten the form fields
loadedForm.FlattenFields();
//Save the document
loadedDocument.Save("Output.pdf");
//Close the document
loadedDocument.Close(true);'Load the PDF document.
Dim loadedDocument As New PdfLoadedDocument("Input.pdf")
'Get the loaded form.
Dim loadedForm As PdfLoadedForm = loadedDocument.Form
'Flatten the form fields
loadedForm.FlattenFields()
'Save and close the modified document.
loadedDocument.Save("output.pdf")
loadedDocument.Close(True)//Create the file open picker
var picker = new FileOpenPicker();
picker.FileTypeFilter.Add(".pdf");
//Browse and chose the file
StorageFile file = await picker.PickSingleFileAsync();
//Creates an empty PDF loaded document instance
PdfLoadedDocument loadedDocument = new PdfLoadedDocument();
//Loads or opens an existing PDF document through Open method of PdfLoadedDocument class
await loadedDocument.OpenAsync(file);
//Get the loaded form
PdfLoadedForm loadedForm = loadedDocument.Form;
//Flatten the form fields
loadedForm.FlattenFields();
//Save the PDF document to stream
MemoryStream stream = new MemoryStream();
await loadedDocument.SaveAsync(stream);
//Close the document
loadedDocument.Close(true);
//Save the stream as PDF document file in local machine. Refer to PDF/UWP section for respected code samples
Save(stream, "output.pdf");//Load an existing PDF.
FileStream docStream = new FileStream(fileName, FileMode.Open, FileAccess.Read);
PdfLoadedDocument loadedDocument = new PdfLoadedDocument(docStream);
//Get the loaded form.
PdfLoadedForm loadedForm = loadedDocument.Form;
//Flatten the form fields
loadedForm.FlattenFields();
//Creating the stream object
MemoryStream stream = new MemoryStream();
//Save the document into stream
loadedDocument.Save(stream);
//If the position is not set to '0' then the PDF will be empty
loadedDocument.Position = 0;
//Close the document
loadedDocument.Close(true);
//Defining the ContentType for pdf file
string contentType = "application/pdf";
//Define the file name
string fileName = "Output.pdf";
//Creates a FileContentResult object by using the file contents, content type, and file name
return File(stream, contentType, fileName);//Load the file as stream
Stream docStream = typeof(App).GetTypeInfo().Assembly.GetManifestResourceStream("Sample.Assets.Sample.pdf");
PdfLoadedDocument loadedDocument = new PdfLoadedDocument(docStream);
//Get the loaded form.
PdfLoadedForm loadedForm = loadedDocument.Form;
//Flatten the form fields
loadedForm.FlattenFields();
//Creating the stream object
MemoryStream stream = new MemoryStream();
//Save the document into stream
loadedDocument.Save(stream);
//If the position is not set to '0' then the PDF will be empty
loadedDocument.Position = 0;
//Close the document
loadedDocument.Close(true);
//Save the stream into pdf file
//The operation in Save under Xamarin varies between Windows Phone, Android and iOS platforms. Please refer PDF/Xamarin section for respective code samples
if (Device.OS == TargetPlatform.WinPhone || Device.OS == TargetPlatform.Windows)
{
Xamarin.Forms.DependencyService.Get<ISaveWindowsPhone>().Save("output.pdf", "application/pdf", stream);
}
else
{
Xamarin.Forms.DependencyService.Get<ISave>().Save("output.pdf", "application/pdf", stream);
}To prevent the user from changing the form field content, you can also use Readonly property.
The below code snippet illustrates how to set the ReadOnly property to a new PDF document.
//Create a new PDF document.
PdfDocument document = new PdfDocument();
//Add a new page to PDF document.
PdfPage page = document.Pages.Add();
//Create the form
PdfForm form = document.Form;
//Set the form as read only
form.ReadOnly = true;
//Create a text box field and add the properties.
PdfTextBoxField textBoxField = new PdfTextBoxField(page, "FirstName");
textBoxField.Bounds = new RectangleF(0, 0, 100, 20);
textBoxField.ToolTip = "First Name";
textBoxField.Text = "john";
//set read only property for a particular field
//textBoxField.ReadOnly = true;
//Add the form field to the document.
document.Form.Fields.Add(textBoxField);
//Save the document.
document.Save("Form.pdf");
//close the document
document.Close(true);'Create a new PDF document.
Dim document As New PdfDocument()
'Add a new page to PDF document.
Dim page As PdfPage = document.Pages.Add()
'Create the form
Dim form As PdfForm = document.Form
'Set the form as read only
form.ReadOnly = True
'Create a Text box field and add the properties.
Dim textBoxField As New PdfTextBoxField(page, "FirstName")
textBoxField.Bounds = New RectangleF(0, 0, 100, 20)
textBoxField.ToolTip = "First Name"
textBoxField.Text = "john"
'set read only property for a particular field
'textBoxField.ReadOnly = True;
'Add the form field to the document.
document.Form.Fields.Add(textBoxField)
'Save the document.
document.Save("Form.pdf")
'close the document
document.Close(True)//Create a new PDF document.
PdfDocument document = new PdfDocument();
//Add a new page to PDF document.
PdfPage page = document.Pages.Add();
//Create the form
PdfForm form = document.Form;
//Set the form as read only
form.ReadOnly = true;
//Create a text box field and add the properties.
PdfTextBoxField textBoxField = new PdfTextBoxField(page, "FirstName");
textBoxField.Bounds = new RectangleF(0, 0, 100, 20);
textBoxField.ToolTip = "First Name";
textBoxField.Text = "john";
//set read only property for a particular field
//textBoxField.ReadOnly = true;
//Add the form field to the document.
document.Form.Fields.Add(textBoxField);
//Save the PDF document to stream
MemoryStream stream = new MemoryStream();
await document.SaveAsync(stream);
//Close the document
document.Close(true);
//Save the stream as PDF document file in local machine. Refer to PDF/UWP section for respected code samples
Save(stream, "Form.pdf");//Create a new PDF document.
PdfDocument document = new PdfDocument();
//Add a new page to PDF document.
PdfPage page = document.Pages.Add();
//Create the form
PdfForm form = document.Form;
//Set the form as read only
form.ReadOnly = true;
//Create a text box field and add the properties.
PdfTextBoxField textBoxField = new PdfTextBoxField(page, "FirstName");
textBoxField.Bounds = new RectangleF(0, 0, 100, 20);
textBoxField.ToolTip = "First Name";
textBoxField.Text = "john";
//set read only property for a particular field
//textBoxField.ReadOnly = true;
//Add the form field to the document.
document.Form.Fields.Add(textBoxField);
//Save the document into stream
MemoryStream stream = new MemoryStream();
document.Save(stream);
stream.Position = 0;
//Close the document
document.Close(true);
//Defining the ContentType for pdf file
string contentType = "application/pdf";
//Define the file name
string fileName = "Form.pdf";
//Creates a FileContentResult object by using the file contents, content type, and file name
return File(stream, contentType, fileName);//Create a new PDF document.
PdfDocument document = new PdfDocument();
//Add a new page to PDF document.
PdfPage page = document.Pages.Add();
//Create the form
PdfForm form = document.Form;
//Set the form as read only
form.ReadOnly = true;
//Create a text box field and add the properties.
PdfTextBoxField textBoxField = new PdfTextBoxField(page, "FirstName");
textBoxField.Bounds = new Syncfusion.Drawing.RectangleF(0, 0, 100, 20);
textBoxField.ToolTip = "First Name";
textBoxField.Text = "john";
//set read only property for a particular field
//textBoxField.ReadOnly = true;
//Add the form field to the document.
document.Form.Fields.Add(textBoxField);
//Save the PDF document to stream
MemoryStream stream = new MemoryStream();
document.Save(stream);
//Close the document
document.Close(true);
//Save the stream into pdf file
//The operation in Save under Xamarin varies between Windows Phone, Android and iOS platforms. Please refer PDF/Xamarin section for respective code samples
if (Device.OS == TargetPlatform.WinPhone || Device.OS == TargetPlatform.Windows)
{
Xamarin.Forms.DependencyService.Get<ISaveWindowsPhone>().Save("Form.pdf", "application/pdf", stream);
}
else
{
Xamarin.Forms.DependencyService.Get<ISave>().Save("Form.pdf", "application/pdf", stream);
}The below code snippet illustrates how to set the ReadOnly property to an existing PDF document.
//Load the PDF document.
PdfLoadedDocument loadedDocument = new PdfLoadedDocument(fileName);
//Get the loaded form.
PdfLoadedForm loadedForm = loadedDocument.Form;
//Set the form as read only
loadedForm.ReadOnly = true;
//Save the document.
loadedDocument.Save("sample.pdf");
//close the document
loadedDocument.Close(true);'Load the PDF document.
Dim loadedDocument As New PdfLoadedDocument(fileName)
'Get the loaded form.
Dim loadedForm As PdfLoadedForm = loadedDocument.Form
'Set the form as read only
loadedForm.ReadOnly = True
'Save the document.
loadedDocument.Save("Form1.pdf")
'close the document
loadedDocument.Close(True)//Create the file open picker
var picker = new FileOpenPicker();
picker.FileTypeFilter.Add(".pdf");
//Browse and chose the file
StorageFile file = await picker.PickSingleFileAsync();
//Creates an empty PDF loaded document instance
PdfLoadedDocument loadedDocument = new PdfLoadedDocument();
//Loads or opens an existing PDF document through Open method of PdfLoadedDocument class
await loadedDocument.OpenAsync(file);
//Get the loaded form
PdfLoadedForm loadedForm = loadedDocument.Form;
//Set the form as read only
loadedForm.ReadOnly = true;
//Save the PDF document to stream
MemoryStream stream = new MemoryStream();
await loadedDocument.SaveAsync(stream);
//Close the document
loadedDocument.Close(true);
//Save the stream as PDF document file in local machine. Refer to PDF/UWP section for respected code samples
Save(stream, "sample.pdf");//Load the PDF document
FileStream docStream = new FileStream(fileName, FileMode.Open, FileAccess.Read);
PdfLoadedDocument loadedDocument = new PdfLoadedDocument(docStream);
//Get the loaded form
PdfLoadedForm loadedForm = loadedDocument.Form;
//Set the form as read only
loadedForm.ReadOnly = true;
//Save the document into stream
MemoryStream stream = new MemoryStream();
loadedDocument.Save(stream);
stream.Position = 0;
//Close the document
loadedDocument.Close(true);
//Defining the ContentType for pdf file
string contentType = "application/pdf";
//Define the file name
string fileName = "sample.pdf";
//Creates a FileContentResult object by using the file contents, content type, and file name
return File(stream, contentType, fileName);//Load the file as stream
Stream docStream = typeof(App).GetTypeInfo().Assembly.GetManifestResourceStream("Sample.Assets.Sample.pdf");
PdfLoadedDocument loadedDocument = new PdfLoadedDocument(docStream);
//Get the loaded form.
PdfLoadedForm loadedForm = loadedDocument.Form;
//Set the form as read only
loadedForm.ReadOnly = true;
//Save the PDF document to stream
MemoryStream stream = new MemoryStream();
loadedDocument.Save(stream);
//Close the document
loadedDocument.Close(true);
//Save the stream into pdf file
//The operation in Save under Xamarin varies between Windows Phone, Android and iOS platforms. Please refer PDF/Xamarin section for respective code samples
if (Device.OS == TargetPlatform.WinPhone || Device.OS == TargetPlatform.Windows)
{
Xamarin.Forms.DependencyService.Get<ISaveWindowsPhone>().Save("output.pdf", "application/pdf", stream);
}
else
{
Xamarin.Forms.DependencyService.Get<ISave>().Save("output.pdf", "application/pdf", stream);
}NOTE
Flattening and adding Read-only properties can be done to the entire form or an individual form field.
Removing the form fields from existing PDF document
You can remove the form fields from an existing PDF document using Remove or RemoveAt methods of PdfFieldCollection class.
The below code illustrates how to remove the form fields from the existing PDF document.
//Load the PDF document.
PdfLoadedDocument loadedDocument = new PdfLoadedDocument(fileName);
//Load the page
PdfLoadedPage loadedPage = loadedDocument.Pages[0] as PdfLoadedPage;
//Get the loaded form.
PdfLoadedForm loadedForm = loadedDocument.Form;
//Load the textbox field
PdfLoadedTextBoxField loadedTextBoxField = loadedForm.Fields[0] as PdfLoadedTextBoxField;
//Remove the field
loadedForm.Fields.Remove(loadedTextBoxField);
//Remove the field at index 0
loadedForm.Fields.RemoveAt(0);
//Save the modified document.
loadedDocument.Save("form.pdf");
//Close the document
loadedDocument.Close(true);'Load the PDF document.
Dim loadedDocument As New PdfLoadedDocument(fileName)
'Load the page
Dim loadedPage As PdfLoadedPage = TryCast(loadedDocument.Pages(0), PdfLoadedPage)
'Get the loaded form.
Dim loadedForm As PdfLoadedForm = loadedDocument.Form
'Load the textbox field
Dim loadedTextBoxField As PdfLoadedTextBoxField = TryCast(loadedForm.Fields(0), PdfLoadedTextBoxField)
'Remove the field
loadedForm.Fields.Remove(loadedTextBoxField)
'Remove the field at index 0
loadedForm.Fields.RemoveAt(0);
'Save the modified document.
loadedDocument.Save("form.pdf")
'Close the document
loadedDocument.Close(True)//Create the file open picker
var picker = new FileOpenPicker();
picker.FileTypeFilter.Add(".pdf");
//Browse and chose the file
StorageFile file = await picker.PickSingleFileAsync();
//Creates an empty PDF loaded document instance
PdfLoadedDocument loadedDocument = new PdfLoadedDocument();
//Loads or opens an existing PDF document through Open method of PdfLoadedDocument class
await loadedDocument.OpenAsync(file);
//Load the page
PdfLoadedPage loadedPage = loadedDocument.Pages[0] as PdfLoadedPage;
//Get the loaded form.
PdfLoadedForm loadedForm = loadedDocument.Form;
//Load the textbox field
PdfLoadedTextBoxField loadedTextBoxField = loadedForm.Fields[0] as PdfLoadedTextBoxField;
//Remove the field
loadedForm.Fields.Remove(loadedTextBoxField);
//Remove the field at index 0
loadedForm.Fields.RemoveAt(0);
//Save the PDF document to stream
MemoryStream stream = new MemoryStream();
await loadedDocument.SaveAsync(stream);
//Close the document
loadedDocument.Close(true);
//Save the stream as PDF document file in local machine. Refer to PDF/UWP section for respected code sample
Save(stream, "Form.pdf");//Load the PDF document
FileStream docStream = new FileStream(fileName, FileMode.Open, FileAccess.Read);
PdfLoadedDocument loadedDocument = new PdfLoadedDocument(docStream);
//Load the page
PdfLoadedPage loadedPage = loadedDocument.Pages[0] as PdfLoadedPage;
//Get the loaded form.
PdfLoadedForm loadedForm = loadedDocument.Form;
//Load the textbox field
PdfLoadedTextBoxField loadedTextBoxField = loadedForm.Fields[0] as PdfLoadedTextBoxField;
//Remove the field
loadedForm.Fields.Remove(loadedTextBoxField);
//Remove the field at index 0
loadedForm.Fields.RemoveAt(0);
//Save the document into stream
MemoryStream stream = new MemoryStream();
loadedDocument.Save(stream);
stream.Position = 0;
//Close the document
loadedDocument.Close(true);
//Defining the ContentType for pdf file
string contentType = "application/pdf";
//Define the file name
string fileName = "Form.pdf";
//Creates a FileContentResult object by using the file contents, content type, and file name.
return File(stream, contentType, fileName);//Load the file as stream
Stream docStream = typeof(App).GetTypeInfo().Assembly.GetManifestResourceStream("Sample.Assets.Sample.pdf");
PdfLoadedDocument loadedDocument = new PdfLoadedDocument(docStream);
//Load the page
PdfLoadedPage loadedPage = loadedDocument.Pages[0] as PdfLoadedPage;
//Get the loaded form.
PdfLoadedForm loadedForm = loadedDocument.Form;
//Load the textbox field
PdfLoadedTextBoxField loadedTextBoxField = loadedForm.Fields[0] as PdfLoadedTextBoxField;
//Remove the field
loadedForm.Fields.Remove(loadedTextBoxField);
//Remove the field at index 0
loadedForm.Fields.RemoveAt(0);
//Save the PDF document to stream
MemoryStream stream = new MemoryStream();
loadedDocument.Save(stream);
//Close the document
loadedDocument.Close(true);
//Save the stream into pdf file
//The operation in Save under Xamarin varies between Windows Phone, Android and iOS platforms. Please refer PDF/Xamarin section for respective code samples
if (Device.OS == TargetPlatform.WinPhone || Device.OS == TargetPlatform.Windows)
{
Xamarin.Forms.DependencyService.Get<ISaveWindowsPhone>().Save("Form.pdf", "application/pdf", stream);
}
else
{
Xamarin.Forms.DependencyService.Get<ISave>().Save("Form.pdf", "application/pdf", stream);
}Importing FDF file to PDF
FDF stands for Forms Data Format. FDF is a file format for representing form data and annotations that are contained in a PDF form. You can import the FDF file to PDF using ImportDataFDF method in PdfLoadedForm class.
The below code illustrates how to import FDF file to PDF.
//Load an existing document.
PdfLoadedDocument loadedDocument = new PdfLoadedDocument(fileName);
// Load the existing form
PdfLoadedForm loadedForm = loadedDocument.Form;
// Load the FDF file
FileStream stream = new FileStream("ImportFDF.fdf", FileMode.Open);
// Import the FDF stream
loadedForm.ImportDataFDF(stream, true);
//Close the document.
loadedDocument.Close(true);'Load an existing document.
Dim loadedDocument As New PdfLoadedDocument(fileName)
' Load the existing form
Dim loadedForm As PdfLoadedForm = loadedDocument.Form
' Load the FDF file
Dim stream As New FileStream("ImportFDF.fdf", FileMode.Open)
' Import the FDF stream
loadedForm.ImportDataFDF(stream, True)
' Close the document
loadedDocument.Close(True)Export PDF file to FDF
To export the FDF file from PDF document, you can use ExportData method in PdfLoadedForm class.
The below code illustrates how to export FDF file from PDF document.
// Load an existing document
PdfLoadedDocument loadedDocument = new PdfLoadedDocument(fileName);
// Load an existing form
PdfLoadedForm loadedForm = loadedDocument.Form;
//Export the existing PDF document to FDF file
loadedForm.ExportData("Export.fdf", DataFormat.Fdf, "SourceForm.pdf");
//Close the document
loadedDocument.Close(true);' Load an existing document
Dim loadedDocument As New PdfLoadedDocument(fileName)
' Load an existing form
Dim loadedForm As PdfLoadedForm = loadedDocument.Form
'Export the existing PDF document to FDF file
loadedForm.ExportData("Export.fdf", DataFormat.Fdf, "SourceForm.pdf")
'Close the document
loadedDocument.Close(True)Complex script support for form fields
You can add a complex script language text in PDF AcroForm fields by using the ComplexScript property of the form field instance. The following code snippet illustrates this.
//Create a new PDF document
PdfDocument document = new PdfDocument();
//Add a new PDF page
PdfPage page = document.Pages.Add();
//Create new PDF text box field
PdfTextBoxField textField = new PdfTextBoxField(page, "textBox");
//Set bounds
textField.Bounds = new RectangleF(10, 10, 200, 30);
//Set text
textField.Text = "สวัสดีชาวโลก";
//Create new PdfTrueTypeFont instance
PdfTrueTypeFont font = new PdfTrueTypeFont(new Font("Tahoma", 10), true);
//Set font
textField.Font = font;
//Enable complex script layout
textField.ComplexScript = true;
//Add the text box field to the form collection
document.Form.Fields.Add(textField);
//Set default appearance as false
document.Form.SetDefaultAppearance(false);
//Save the PDF document
document.Save("Form.pdf");
//Close the document
document.Close(true);'Create a new PDF document
Dim document As New PdfDocument()
'Add a new PDF page
Dim page As PdfPage = document.Pages.Add()
'Create new PDF text box field
Dim textField As New PdfTextBoxField(page, "textBox")
'Set bounds
textField.Bounds = New RectangleF(10, 10, 200, 30)
'Set text
textField.Text = "สวัสดีชาวโลก"
'Create new PdfTrueTypeFont instance
Dim font As New PdfTrueTypeFont(New Font("Tahoma", 10), True)
'Set font
textField.Font = font
'Enable complex script layout
textField.ComplexScript = True
'Add the text box field to the form collection
document.Form.Fields.Add(textField)
'Set default appearance as false
document.Form.SetDefaultAppearance(False)
'Save the PDF document
document.Save("Form.pdf")
'Close the document
document.Close(True)//Create a new PDF document
PdfDocument document = new PdfDocument();
//Add a new PDF page
PdfPage page = document.Pages.Add();
//Create new PDF text box field
PdfTextBoxField textField = new PdfTextBoxField(page, "textBox");
//Set bounds
textField.Bounds = new RectangleF(10, 10, 200, 30);
//Set text
textField.Text = "สวัสดีชาวโลก";
Stream fontStream = typeof(MainPage).GetTypeInfo().Assembly.GetManifestResourceStream("ComplexScriptSample.Assets.tahoma.ttf");
//Create a new PDF font instance
PdfFont font = new PdfTrueTypeFont(fontStream, 10);
//Set font
textField.Font = font;
//Enable complex script layout
textField.ComplexScript = true;
//Add the text box field to the form collection
document.Form.Fields.Add(textField);
//Set default appearance to false
document.Form.SetDefaultAppearance(false);
//Save the PDF document
MemoryStream stream = new MemoryStream();
await document.SaveAsync(stream);
//Close the PDF document
document.Close(true);
//Save the stream as PDF document file in local machine. Refer to the PDF/UWP section for respected code samples
Save(stream, "Output.pdf");//Create a new PDF document
PdfDocument document = new PdfDocument();
//Add a new PDF page
PdfPage page = document.Pages.Add();
//Create the new PDF text box field
PdfTextBoxField textField = new PdfTextBoxField(page, "textBox");
//Set bounds
textField.Bounds = new RectangleF(10, 10, 200, 30);
//Set text
textField.Text = "สวัสดีชาวโลก";
FileStream fontStream = new FileStream("tahoma.ttf", FileMode.Open, FileAccess.Read);
//Create a new PDF font instance
PdfFont font = new PdfTrueTypeFont(fontStream, 10);
//Set font
textField.Font = font;
//Enable complex script layout
textField.ComplexScript = true;
//Add the text box field to the form collection
document.Form.Fields.Add(textField);
//Set default appearance as false
document.Form.SetDefaultAppearance(false);
//Save the PDF document
MemoryStream stream = new MemoryStream();
document.Save(stream);
//Close the PDF document
document.Close(true);
//Defining the content type for PDF file
string contentType = "application/pdf";
//Define the file name
string fileName = "Output.pdf";
//Creates a FileContentResult object by using the file contents, content type, and file name
return File(stream, contentType, fileName);//Create a new PDF document
PdfDocument document = new PdfDocument();
//Add a new PDF page
PdfPage page = document.Pages.Add();
//Create the new PDF text box field
PdfTextBoxField textField = new PdfTextBoxField(page, "textBox");
//Set bounds
textField.Bounds = new RectangleF(10, 10, 200, 30);
//Set text
textField.Text = "สวัสดีชาวโลก";
//Load the font as stream
Stream fontStream = typeof(App).GetTypeInfo().Assembly.GetManifestResourceStream("Sample.Assets.tahoma.ttf");
//Create a new PDF font instance
PdfFont font = new PdfTrueTypeFont(fontStream, 10);
//Set font
textField.Font = font;
//Enable complex script layout
textField.ComplexScript = true;
//Add the text box field to the form collection
document.Form.Fields.Add(textField);
//Set default appearance as false
document.Form.SetDefaultAppearance(false);
//Save the PDF document
MemoryStream stream = new MemoryStream();
document.Save(stream);
//Close the PDF document
document.Close(true);
//Save the stream into PDF file
//The operation in Save under Xamarin varies between Windows Phone, Android and iOS platforms. Refer to the PDF/Xamarin section for respective code samples.
if (Device.OS == TargetPlatform.WinPhone || Device.OS == TargetPlatform.Windows)
{
Xamarin.Forms.DependencyService.Get<ISaveWindowsPhone>().Save("Output.pdf", "application/pdf", stream);
}
else
{
Xamarin.Forms.DependencyService.Get<ISave>().Save("Output.pdf", "application/pdf", stream);
}You can add the complex script for all the supported form fields by enabling the ComplexScript property of PdfForm or PdfLoadedForm instance.
Supported form fields:
- Text box field
- Combo box field
- List box field
- Button field
The following code example illustrates how to add complex script support for all the supported fields in PDF document.
//Create a new PDF document
PdfDocument document = new PdfDocument();
//Add a new PDF page
PdfPage page = document.Pages.Add();
//Create the new PDF text box field
PdfTextBoxField textField = new PdfTextBoxField(page, "textBox");
//Set bounds
textField.Bounds = new RectangleF(10, 10, 200, 30);
//Set text
textField.Text = "สวัสดีชาวโลก";
//Create new PdfTrueTypeFont instance
PdfTrueTypeFont font = new PdfTrueTypeFont(new Font("Tahoma", 10), true);
//Set font
textField.Font = font;
//Add the text box field to the form collection
document.Form.Fields.Add(textField);
//Set default appearance to false
document.Form.SetDefaultAppearance(false);
//Enable complex script layout for form
document.Form.ComplexScript = true;
//Save the PDF document
document.Save("Form.pdf");
//Close the document
document.Close(true);'Create a new PDF document
Dim document As New PdfDocument()
'Add a new PDF page
Dim page As PdfPage = document.Pages.Add()
'Create the new PDF text box field
Dim textField As New PdfTextBoxField(page, "textBox")
'Set bounds
textField.Bounds = New RectangleF(10, 10, 200, 30)
'Set text
textField.Text = "สวัสดีชาวโลก"
'Create new PdfTrueTypeFont instance
Dim font As New PdfTrueTypeFont(New Font("Tahoma", 10), True)
'Set font
textField.Font = font
'Add the text box field to the form collection
document.Form.Fields.Add(textField)
'Set default appearance to false
document.Form.SetDefaultAppearance(False)
'Enable complex script layout for form
document.Form.ComplexScript = True
'Save the PDF document
document.Save("Form.pdf")
'Close the document
document.Close(True)//Create a new PDF document
PdfDocument document = new PdfDocument();
//Add a new PDF page
PdfPage page = document.Pages.Add();
//Create the new PDF text box field
PdfTextBoxField textField = new PdfTextBoxField(page, "textBox");
//Set bounds
textField.Bounds = new RectangleF(10, 10, 200, 30);
//Set text
textField.Text = "สวัสดีชาวโลก";
Stream fontStream = typeof(MainPage).GetTypeInfo().Assembly.GetManifestResourceStream("ComplexScriptSample.Assets.tahoma.ttf");
//Create a new PDF font instance
PdfFont font = new PdfTrueTypeFont(fontStream, 10);
//Set font
textField.Font = font;
//Add the text box field to the form collection
document.Form.Fields.Add(textField);
//Set default appearance to false
document.Form.SetDefaultAppearance(false);
//Enable complex script layout for form
document.Form.ComplexScript = true;
//Save the PDF document
MemoryStream stream = new MemoryStream();
await document.SaveAsync(stream);
//Close the document
document.Close(true);
//Save the stream as PDF document file in local machine. Refer to the PDF/UWP section for respective code samples.
Save(stream, "Output.pdf");//Create a new PDF document
PdfDocument document = new PdfDocument();
//Add a new PDF page
PdfPage page = document.Pages.Add();
//Create the new PDF text box field
PdfTextBoxField textField = new PdfTextBoxField(page, "textBox");
//Set bounds
textField.Bounds = new RectangleF(10, 10, 200, 30);
//Set text
textField.Text = "สวัสดีชาวโลก";
FileStream fontStream = new FileStream("tahoma.ttf", FileMode.Open, FileAccess.Read);
//Create a new PDF font instance
PdfFont font = new PdfTrueTypeFont(fontStream, 10);
//Set font
textField.Font = font;
//Add the text box field to the form collection
document.Form.Fields.Add(textField);
//Set default appearance as false
document.Form.SetDefaultAppearance(false);
//Enable complex script layout for form
document.Form.ComplexScript = true;
//Save the PDF document
MemoryStream stream = new MemoryStream();
document.Save(stream);
//Close the PDF document
document.Close(true);
//Defining the ContentType for PDF file
string contentType = "application/pdf";
//Define the file name
string fileName = "Output.pdf";
//Creates a FileContentResult object by using the file contents, content type, and file name
return File(stream, contentType, fileName);//Create a new PDF document
PdfDocument document = new PdfDocument();
//Add a new PDF page
PdfPage page = document.Pages.Add();
//Create the new PDF text box field
PdfTextBoxField textField = new PdfTextBoxField(page, "textBox");
//Set bounds
textField.Bounds = new RectangleF(10, 10, 200, 30);
//Set text
textField.Text = "สวัสดีชาวโลก";
//Load the font as stream
Stream fontStream = typeof(App).GetTypeInfo().Assembly.GetManifestResourceStream("Sample.Assets.tahoma.ttf");
//Create a new PDF font instance
PdfFont font = new PdfTrueTypeFont(fontStream, 10);
//Set font
textField.Font = font;
//Add the text box field to the form collection
document.Form.Fields.Add(textField);
//Set default appearance as false
document.Form.SetDefaultAppearance(false);
//Enable complex script layout for form
document.Form.ComplexScript = true;
//Save the PDF document
MemoryStream stream = new MemoryStream();
document.Save(stream);
//Close the PDF document
document.Close(true);
//Save the stream into PDF file
//The operation in Save under Xamarin varies between Windows Phone, Android, and iOS platforms. Refer to the PDF/Xamarin section for respective code samples
if (Device.OS == TargetPlatform.WinPhone || Device.OS == TargetPlatform.Windows)
{
Xamarin.Forms.DependencyService.Get<ISaveWindowsPhone>().Save("Output.pdf", "application/pdf", stream);
}
else
{
Xamarin.Forms.DependencyService.Get<ISave>().Save("Output.pdf", "application/pdf", stream);
}You can also flatten the existing form fields with complex script layout by using the following code snippet.
//Load the existing PDF document
PdfLoadedDocument loadedDocument = new PdfLoadedDocument("Form.pdf");
//Get the existing PDF form
PdfLoadedForm lForm = loadedDocument.Form as PdfLoadedForm;
//Set the complex script layout
lForm.ComplexScript = true;
//Set flatten
lForm.Flatten = true;
//Save the document
loadedDocument.Save("flatten.pdf");
//Close the document
loadedDocument.Close(true);'Load the existing PDF document
Dim loadedDocument As New PdfLoadedDocument("Form.pdf")
'Get the existing PDF form
Dim lForm As PdfLoadedForm = TryCast(loadedDocument.Form, PdfLoadedForm)
'Set the complex script layout
lForm.ComplexScript = True
'Set flatten
lForm.Flatten = True
'Save the document
loadedDocument.Save("flatten.pdf")
'Close the document
loadedDocument.Close(True)Stream inputFileStream = typeof(MainPage).GetTypeInfo().Assembly.GetManifestResourceStream("Form.pdf");
//Load the existing PDF document
PdfLoadedDocument loadedDocument = new PdfLoadedDocument(inputFileStream);
//Get the existing PDF form
PdfLoadedForm lForm = loadedDocument.Form as PdfLoadedForm;
//Set the complex script layout
lForm.ComplexScript = true;
//Set flatten
lForm.Flatten = true;
MemoryStream stream = new MemoryStream();
//Save the document
await loadedDocument.SaveAsync(stream);
//Close the document
loadedDocument.Close(true);
//Save the stream as PDF document file in local machine. Refer to the PDF/UWP section for respected code samples
Save(stream, "Output.pdf");FileStream inputFileStream = new FileStream("Form.pdf", FileMode.Open, FileAccess.Read);
//Load the existing PDF document
PdfLoadedDocument loadedDocument = new PdfLoadedDocument(inputFileStream);
//Get the existing PDF form
PdfLoadedForm lForm = loadedDocument.Form as PdfLoadedForm;
//Set the complex script layout
lForm.ComplexScript = true;
//Set flatten
lForm.Flatten = true;
MemoryStream stream = new MemoryStream();
//Save the document
loadedDocument.Save(stream);
//Close the document
loadedDocument.Close(true);
//Defining the content type for PDF file
string contentType = "application/pdf";
//Define the file name
string fileName = "Output.pdf";
//Creates a FileContentResult object by using the file contents, content type, and file name
return File(stream, contentType, fileName);Stream inputFileStream = typeof(App).GetTypeInfo().Assembly.GetManifestResourceStream("Sample.Assets.Form.pdf");
//Load the existing PDF document
PdfLoadedDocument loadedDocument = new PdfLoadedDocument(inputFileStream);
//Get the existing PDF form
PdfLoadedForm lForm = loadedDocument.Form as PdfLoadedForm;
//Set the complex script layout
lForm.ComplexScript = true;
//Set flatten
lForm.Flatten = true;
//Save the PDF document
MemoryStream stream = new MemoryStream();
loadedDocument.Save(stream);
//Close the PDF document
loadedDocument.Close(true);
//Save the stream into PDF file
//The operation in Save under Xamarin varies between Windows Phone, Android, and iOS platforms. Refer to the PDF/Xamarin section for respective code samples
if (Device.OS == TargetPlatform.WinPhone || Device.OS == TargetPlatform.Windows)
{
Xamarin.Forms.DependencyService.Get<ISaveWindowsPhone>().Save("Output.pdf", "application/pdf", stream);
}
else
{
Xamarin.Forms.DependencyService.Get<ISave>().Save("Output.pdf", "application/pdf", stream);
}Auto naming of form fields
The Essential PDF supports auto naming of form fields in a PDF document while creating form fields with same name. The FieldAutoNaming property of PdfForm is used to enable or disable auto naming of form field.
While enabling this property, the field names are auto naming. If the fields are created using same/common name, the created fields will act as individual.
While disabling this property, the field names are not auto naming and the created fields are saved in a single group. The same value will be referred in all the same name fields.
By default, the value is set to true. This is illustrated in the following code sample.
//Create a new PDF document
PdfDocument document = new PdfDocument();
//Add a new page to the PDF document
PdfPage page = document.Pages.Add();
//Create the form
PdfForm form = document.Form;
//Enable the field auto naming
form.FieldAutoNaming = true;
//Create a textbox field and add the properties
PdfTextBoxField textBoxField = new PdfTextBoxField(page, "Name");
textBoxField.Bounds = new RectangleF(0, 0, 100, 20);
textBoxField.ToolTip = "FirstName";
textBoxField.Text = "John";
//Add the form field to the document
document.Form.Fields.Add(textBoxField);
//Create a text box field with the same name and add the properties
PdfTextBoxField textBoxField1 = new PdfTextBoxField(page, "Name");
textBoxField1.Bounds = new RectangleF(0, 50, 100, 20);
textBoxField1.ToolTip = "LastName";
textBoxField1.Text = "Doe";
//Add form field to the document
document.Form.Fields.Add(textBoxField1);
//Save the document
document.Save("Output.pdf");
//Close the document
document.Close(true);'Create a new PDF document
Dim document As New PdfDocument()
'Add a new page to the PDF document
Dim page As PdfPage = document.Pages.Add()
'Create the form
Dim form As PdfForm = document.Form
'Enable the field auto naming
form.FieldAutoNaming = True
'Create a text box field and add the properties
Dim textBoxField As New PdfTextBoxField(page, "Name")
textBoxField.Bounds = New RectangleF(0, 0, 100, 20)
textBoxField.ToolTip = "FirstName"
textBoxField.Text = "John"
'Add the form field to the document
document.Form.Fields.Add(textBoxField)
'Create a text box field with the same name and add the properties
Dim textBoxField1 As New PdfTextBoxField(page, "Name")
textBoxField1.Bounds = New RectangleF(0, 50, 100, 20)
textBoxField1.ToolTip = "LastName"
textBoxField1.Text = "Doe"
'Add form field to the document
document.Form.Fields.Add(textBoxField1)
'Save the document
document.Save("Output.pdf")
'Close the document
document.Close(True)//Create a new PDF document
PdfDocument document = new PdfDocument();
//Add a new page to the PDF document
PdfPage page = document.Pages.Add();
//Create the form
PdfForm form = document.Form;
//Enable the field auto naming
form.FieldAutoNaming = true;
//Create a text box field and add the properties
PdfTextBoxField textBoxField = new PdfTextBoxField(page, "Name");
textBoxField.Bounds = new RectangleF(0, 0, 100, 20);
textBoxField.ToolTip = "FirstName";
textBoxField.Text = "John";
//Add the form field to the document
document.Form.Fields.Add(textBoxField);
//Create a text box field with the same name and add the properties
PdfTextBoxField textBoxField1 = new PdfTextBoxField(page, "Name");
textBoxField1.Bounds = new RectangleF(0, 50, 100, 20);
textBoxField1.ToolTip = "LastName";
textBoxField1.Text = "Doe";
//Add form field to the document
document.Form.Fields.Add(textBoxField1);
//Save the document as stream
MemoryStream stream = new MemoryStream();
await document.SaveAsync(stream);
//Close the document
document.Close(true);
//Save the stream as PDF document file in local machine. Refer to the PDF/UWP section for respected code samples
Save(stream, "Output.pdf");//Create a new PDF document
PdfDocument document = new PdfDocument();
//Add a new page to the PDF document
PdfPage page = document.Pages.Add();
//Create the form
PdfForm form = document.Form;
//Enable the field auto naming
form.FieldAutoNaming = true;
//Create a text box field and add the properties
PdfTextBoxField textBoxField = new PdfTextBoxField(page, "Name");
textBoxField.Bounds = new RectangleF(0, 0, 100, 20);
textBoxField.ToolTip = "FirstName";
textBoxField.Text = "John";
//Add the form field to the document
document.Form.Fields.Add(textBoxField);
//Create a text box field with the same name and add the properties
PdfTextBoxField textBoxField1 = new PdfTextBoxField(page, "Name");
textBoxField1.Bounds = new RectangleF(0, 50, 100, 20);
textBoxField1.ToolTip = "LastName";
textBoxField1.Text = "Doe";
//Add form field to the document
document.Form.Fields.Add(textBoxField1);
//Creating the stream object
MemoryStream stream = new MemoryStream();
//Save the document as stream
document.Save(stream);
//If the position is not set to '0', then the PDF will be empty
stream.Position = 0;
//Close the document
document.Close(true);
//Defining the ContentType for PDF file.
string contentType = "application/pdf";
//Define the file name
string fileName = "Output.pdf";
//Creates a FileContentResult object by using the file contents, content type, and file name
return File(stream, contentType, fileName);//Create a new PDF document
PdfDocument document = new PdfDocument();
//Add a new page to the PDF document
PdfPage page = document.Pages.Add();
//Create the form
PdfForm form = document.Form;
//Enable the field auto naming
form.FieldAutoNaming = true;
//Create a textbox field and add the properties
PdfTextBoxField textBoxField = new PdfTextBoxField(page, "Name");
textBoxField.Bounds = new RectangleF(0, 0, 100, 20);
textBoxField.ToolTip = "FirstName";
textBoxField.Text = "John";
//Add the form field to the document
document.Form.Fields.Add(textBoxField);
//Create a text box field with the same name and add the properties
PdfTextBoxField textBoxField1 = new PdfTextBoxField(page, "Name");
textBoxField1.Bounds = new RectangleF(0, 50, 100, 20);
textBoxField1.ToolTip = "LastName";
textBoxField1.Text = "Doe";
//Add form field to the document
document.Form.Fields.Add(textBoxField1);
//Save the document as stream
MemoryStream stream = new MemoryStream();
document.Save(stream);
//Close the document
document.Close(true);
//Save the stream into PDF file
//The operation in Save under Xamarin varies between Windows Phone, Android, and iOS platforms. Refer to the PDF/Xamarin section for respective code samples
if (Device.RuntimePlatform == Device.UWP)
{
Xamarin.Forms.DependencyService.Get<ISaveWindowsPhone>().Save("Output.pdf", "application/pdf", stream);
}
else
{
Xamarin.Forms.DependencyService.Get<ISave>().Save("Output.pdf", "application/pdf", stream);
}The following screenshot shows the enabling and disabling of form fields auto naming in PDF documents.
Adding actions to form fields
Please refer to the actions section for more details
NOTE
Essential PDF allows users to preserve the extended rights for form filling alone.
Auto resizing text box field text
The Essential PDF provides support to automatically resize the text of text box field based on the field width and height. You can auto resize the text box text by using the AutoResizeText property available in PdfLoadedTextBox instance.
The following code illustrates how to set AutoResizeText in an existing PDF text box field.
//Load an existing document
PdfLoadedDocument doc = new PdfLoadedDocument("SourceForm.pdf");
//Read the text box field
PdfLoadedForm form = doc.Form;
PdfLoadedTextBoxField loadedField = doc.Form.Fields[0] as PdfLoadedTextBoxField;
//Enable auto resize
loadedField.AutoResizeText = true;
//Flatten the form
form.Flatten = true;
//Save the document
doc.Save("Form.pdf");
//Close the document
doc.Close(true);‘Load an existing document
Dim doc As PdfLoadedDocument = New PdfLoadedDocument("SourceForm.pdf")
Dim form As PdfLoadedForm = doc.Form
‘Read the text box field
Dim loadedField As PdfLoadedTextBoxField = TryCast(doc.Form.Fields(0), PdfLoadedTextBoxField)
‘Enable auto resize.
loadedField.AutoResizeText = True
‘Flatten the form
form.Flatten = True
‘Save the document
doc.Save("Form.pdf")
‘Close the document
doc.Close(True)//Create the file open picker
var picker = new FileOpenPicker();
picker.FileTypeFilter.Add(".pdf");
//Browse and choose the file
StorageFile file = await picker.PickSingleFileAsync();
//Creates an empty PDF loaded document instance
PdfLoadedDocument loadedDocument = new PdfLoadedDocument();
//Loads or opens an existing PDF document through Open method of the PdfLoadedDocument class
await loadedDocument.OpenAsync(file);
//Get the loaded form
PdfLoadedForm loadedForm = loadedDocument.Form;
//Read the text box field
PdfLoadedTextBoxField loadedField = loadedDocument.Form.Fields[0] as PdfLoadedTextBoxField;
//Enable auto resize
dField.AutoResizeText = true;
//Flatten the form
form.Flatten = true;
//Save the PDF document to stream
MemoryStream stream = new MemoryStream();
await loadedDocument.SaveAsync(stream);
//Close the document
loadedDocument.Close(true);
//Save the stream as PDF document file in local machine. Refer to the PDF/UWP section for respective code samples
Save(stream, "sample.pdf");//Load the PDF document
FileStream docStream = new FileStream(fileName, FileMode.Open, FileAccess.Read);
PdfLoadedDocument loadedDocument = new PdfLoadedDocument(docStream);
//Get the loaded form
PdfLoadedForm loadedForm = loadedDocument.Form;
//Read the text box field
PdfLoadedTextBoxField loadedField = loadedDocument.Form.Fields[0] as PdfLoadedTextBoxField;
//Enable auto resize
loadedField.AutoResizeText = true;
//Flatten the form
form.Flatten = true;
//Save the document into stream
MemoryStream stream = new MemoryStream();
loadedDocument.Save(stream);
stream.Position = 0;
//Close the document
loadedDocument.Close(true);
//Defining the ContentType for PDF file
string contentType = "application/pdf";
//Define the file name
string fileName = "sample.pdf";
//Creates a FileContentResult object by using the file contents, content type, and file name
return File(stream, contentType, fileName);//Load the file as stream
Stream docStream = typeof(App).GetTypeInfo().Assembly.GetManifestResourceStream("Sample.Assets.Sample.pdf");
PdfLoadedDocument loadedDocument = new PdfLoadedDocument(docStream);
//Get the loaded form
PdfLoadedForm loadedForm = loadedDocument.Form;
//Read the text box field
PdfLoadedTextBoxField loadedField = loadedDocument.Form.Fields[0] as PdfLoadedTextBoxField;
//Enable auto resize
loadedField.AutoResizeText = true;
//Flatten the form
form.Flatten = true;
//Save the PDF document to stream
MemoryStream stream = new MemoryStream();
loadedDocument.Save(stream);
//Close the document
loadedDocument.Close(true);
//Save the stream into PDF file
//The operation in Save under Xamarin varies between Windows Phone, Android, and iOS platforms. Refer to the PDF/Xamarin section for respective code samples
if (Device.OS == TargetPlatform.WinPhone || Device.OS == TargetPlatform.Windows)
{
Xamarin.Forms.DependencyService.Get<ISaveWindowsPhone>().Save("output.pdf", "application/pdf", stream);
}
else
{
Xamarin.Forms.DependencyService.Get<ISave>().Save("output.pdf", "application/pdf", stream);
}Troubleshooting
Form fields may appear empty in adobe reader some time due to the absence of the appearance dictionary. To resolve this, you have to enable the Adobe Reader default appearance by using the SetDefaultAppearance method in PdfForm class.
The below code illustrates how to enable the default appearance in new PDF document.
//Create a new PDF document.
PdfDocument document = new PdfDocument();
//Add a new page to PDF document.
PdfPage page = document.Pages.Add();
//Create a Text box field and add the properties.
PdfTextBoxField textBoxField = new PdfTextBoxField(page, "FirstName");
textBoxField.Bounds = new RectangleF(0, 0, 100, 20);
textBoxField.ToolTip = "First Name";
//Add the form field to the document.
document.Form.Fields.Add(textBoxField);
//Enable the default Appearance
document.Form.SetDefaultAppearance(true);
//Save the document.
document.Save("Form.pdf");
//close the document
document.Close(true);'Create a new PDF document.
Dim document As New PdfDocument()
'Add a new page to PDF document.
Dim page As PdfPage = document.Pages.Add()
'Create a Text box field and add the properties.
Dim textBoxField As New PdfTextBoxField(page, "FirstName")
textBoxField.Bounds = New RectangleF(0, 0, 100, 20)
textBoxField.ToolTip = "First Name"
'Add the form field to the document.
document.Form.Fields.Add(textBoxField)
'Enable the default Appearance
document.Form.SetDefaultAppearance(True)
'Save the document.
document.Save("Form.pdf")
'close the document
document.Close(True)//Create a new PDF document
PdfDocument document = new PdfDocument();
//Add a new page to PDF document
PdfPage page = document.Pages.Add();
//Create a Text box field and add the properties
PdfTextBoxField textBoxField = new PdfTextBoxField(page, "FirstName");
textBoxField.Bounds = new RectangleF(0, 0, 100, 20);
textBoxField.ToolTip = "First Name";
//Add the form field to the document
document.Form.Fields.Add(textBoxField);
//Enable the default Appearance
document.Form.SetDefaultAppearance(true);
//Save the PDF document to stream
MemoryStream stream = new MemoryStream();
await document.SaveAsync(stream);
//Close the document
document.Close(true);
//Save the stream as PDF document file in local machine. Refer to PDF/UWP section for respected code samples
Save(stream, "Form.pdf");//Create a new PDF document.
PdfDocument document = new PdfDocument();
//Add a new page to PDF document.
PdfPage page = document.Pages.Add();
//Create a Text box field and add the properties.
PdfTextBoxField textBoxField = new PdfTextBoxField(page, "FirstName");
textBoxField.Bounds = new RectangleF(0, 0, 100, 20);
textBoxField.ToolTip = "First Name";
//Add the form field to the document.
document.Form.Fields.Add(textBoxField);
//Enable the default Appearance
document.Form.SetDefaultAppearance(true);
//Save the document into stream
MemoryStream stream = new MemoryStream();
document.Save(stream);
stream.Position = 0;
//Close the document
document.Close(true);
//Defining the ContentType for pdf file
string contentType = "application/pdf";
//Define the file name
string fileName = "Form.pdf";
//Creates a FileContentResult object by using the file contents, content type, and file name
return File(stream, contentType, fileName);//Create a new PDF document.
PdfDocument document = new PdfDocument();
//Add a new page to PDF document.
PdfPage page = document.Pages.Add();
//Create a Text box field and add the properties.
PdfTextBoxField textBoxField = new PdfTextBoxField(page, "FirstName");
textBoxField.Bounds = new Syncfusion.Drawing.RectangleF(0, 0, 100, 20);
textBoxField.ToolTip = "First Name";
//Add the form field to the document.
document.Form.Fields.Add(textBoxField);
//Enable the default Appearance
document.Form.SetDefaultAppearance(true);
//Save the PDF document to stream
MemoryStream stream = new MemoryStream();
document.Save(stream);
//Close the document
document.Close(true);
//Save the stream into pdf file
//The operation in Save under Xamarin varies between Windows Phone, Android and iOS platforms. Please refer PDF/Xamarin section for respective code samples
if (Device.OS == TargetPlatform.WinPhone || Device.OS == TargetPlatform.Windows)
{
Xamarin.Forms.DependencyService.Get<ISaveWindowsPhone>().Save("Form.pdf", "application/pdf", stream);
}
else
{
Xamarin.Forms.DependencyService.Get<ISave>().Save("Form.pdf", "application/pdf", stream);
}The below code illustrates how to enable the default appearance in existing PDF document.
//Load the PDF document.
PdfLoadedDocument loadedDocument = new PdfLoadedDocument(fileName);
//Get the loaded form.
PdfLoadedForm loadedForm = loadedDocument.Form;
//Get the loaded text box field and fill it.
PdfLoadedTextBoxField loadedTextBoxField = loadedForm.Fields[0] as PdfLoadedTextBoxField;
loadedTextBoxField.Text = "First Name";
//Enable the default Appearance
loadedDocument.Form.SetDefaultAppearance(true);
//Save the modified document.
loadedDocument.Save("sample.pdf");
//Close the document
loadedDocument.Close(true);'Load the PDF document.
Dim loadedDocument As New PdfLoadedDocument(fileName)
'Get the loaded form.
Dim loadedForm As PdfLoadedForm = loadedDocument.Form
'Get the loaded text box field and fill it.
Dim loadedTextBoxField As PdfLoadedTextBoxField = TryCast(loadedForm.Fields(0), PdfLoadedTextBoxField)
loadedTextBoxField.Text = "First Name"
'Enable the default Appearance
loadedDocument.Form.SetDefaultAppearance(True)
'Save the modified document.
loadedDocument.Save("sample.pdf")
'Close the document
loadedDocument.Close(True)//Create the file open picker
var picker = new FileOpenPicker();
picker.FileTypeFilter.Add(".pdf");
//Browse and chose the file
StorageFile file = await picker.PickSingleFileAsync();
//Creates an empty PDF loaded document instance
PdfLoadedDocument loadedDocument = new PdfLoadedDocument();
//Loads or opens an existing PDF document through Open method of PdfLoadedDocument class
await loadedDocument.OpenAsync(file);
//Get the loaded form.
PdfLoadedForm loadedForm = loadedDocument.Form;
//Get the loaded text box field and fill it.
PdfLoadedTextBoxField loadedTextBoxField = loadedForm.Fields[0] as PdfLoadedTextBoxField;
loadedTextBoxField.Text = "First Name";
//Enable the default Appearance
loadedDocument.Form.SetDefaultAppearance(true);
//Save the PDF document to stream
MemoryStream stream = new MemoryStream();
await loadedDocument.SaveAsync(stream);
//Close the document
loadedDocument.Close(true);
//Save the stream as PDF document file in local machine. Refer to PDF/UWP section for respected code samples
Save(stream, "sample.pdf");//Load the PDF document
FileStream docStream = new FileStream(fileName, FileMode.Open, FileAccess.Read);
PdfLoadedDocument loadedDocument = new PdfLoadedDocument(docStream);
//Get the loaded form.
PdfLoadedForm loadedForm = loadedDocument.Form;
//Get the loaded text box field and fill it.
PdfLoadedTextBoxField loadedTextBoxField = loadedForm.Fields[0] as PdfLoadedTextBoxField;
loadedTextBoxField.Text = "First Name";
//Enable the default Appearance
loadedDocument.Form.SetDefaultAppearance(true);
//Save the document into stream
MemoryStream stream = new MemoryStream();
loadedDocument.Save(stream);
stream.Position = 0;
//Close the document
loadedDocument.Close(true);
//Defining the ContentType for pdf file
string contentType = "application/pdf";
//Define the file name
string fileName = "sample.pdf";
//Creates a FileContentResult object by using the file contents, content type, and file name
return File(stream, contentType, fileName);//Load the file as stream
Stream docStream = typeof(App).GetTypeInfo().Assembly.GetManifestResourceStream("Sample.Assets.Sample.pdf");
PdfLoadedDocument loadedDocument = new PdfLoadedDocument(docStream);
//Get the loaded form.
PdfLoadedForm loadedForm = loadedDocument.Form;
//Get the loaded text box field and fill it.
PdfLoadedTextBoxField loadedTextBoxField = loadedForm.Fields[0] as PdfLoadedTextBoxField;
loadedTextBoxField.Text = "First Name";
//Enable the default Appearance
loadedDocument.Form.SetDefaultAppearance(true);
//Save the PDF document to stream
MemoryStream stream = new MemoryStream();
loadedDocument.Save(stream);
//Close the document
loadedDocument.Close(true);
//Save the stream into pdf file
//The operation in Save under Xamarin varies between Windows Phone, Android and iOS platforms. Please refer PDF/Xamarin section for respective code samples
if (Device.OS == TargetPlatform.WinPhone || Device.OS == TargetPlatform.Windows)
{
Xamarin.Forms.DependencyService.Get<ISaveWindowsPhone>().Save("sample.pdf", "application/pdf", stream);
}
else
{
Xamarin.Forms.DependencyService.Get<ISave>().Save("sample.pdf", "application/pdf", stream);
}