Class PdfListFieldItemCollection

Represents list field item collection.

Inheritance

System.Object

PdfCollection

PdfListFieldItemCollection

Implements

System.Collections.IEnumerable

Inherited Members

PdfCollection.Count

PdfCollection.GetEnumerator()

PdfCollection.List

System.Object.Equals(System.Object)

System.Object.Equals(System.Object, System.Object)

System.Object.GetHashCode()

System.Object.GetType()

System.Object.MemberwiseClone()

System.Object.ReferenceEquals(System.Object, System.Object)

System.Object.ToString()

Namespace: Syncfusion.Pdf.Interactive

Assembly: Syncfusion.Pdf.Base.dll

Syntax

public class PdfListFieldItemCollection : PdfCollection, IEnumerable, IPdfWrapper

Remarks

This PdfListFieldItemCollection class is used to get the collection of list field items in PDF forms. Please refer the UG docuemntation link https://help.syncfusion.com/file-formats/pdf/working-with-forms#adding-the-list-box-field for more details

Examples

//Create a new PDf document
PdfDocument document = new PdfDocument();           
//Creates a new page and adds it as the last page of the document
PdfPage page = document.Pages.Add();                         
//Create list box
PdfListBoxField listBox = new PdfListBoxField(page, "list1");
//Add the field to listbox.
document.Form.Fields.Add(listBox);            
//Set the properties.
listBox.Bounds = new RectangleF(100, 350, 100, 50);
listBox.HighlightMode = PdfHighlightMode.Outline;            
// Creates list items
PdfListFieldItemCollection itemCollection = listBox.Items;
//Add the items to the list box
itemCollection.Add(new PdfListFieldItem("English", "English"));
itemCollection.Add(new PdfListFieldItem("French", "French"));
itemCollection.Add(new PdfListFieldItem("German", "German"));
listBox.SelectedIndex = 0;            
document.Save("Form.pdf");
document.Close(true);

'Create a new PDf document
Dim document As PdfDocument = New PdfDocument()
'Create a page
Dim page As PdfPage = document.Pages.Add()
'Create list box
Dim listBox As PdfListBoxField = New PdfListBoxField(page, "list1")
'Add the field to listbox.
document.Form.Fields.Add(listBox)
'Set the properties.
listBox.Bounds = New RectangleF(100, 350, 100, 50)
listBox.HighlightMode = PdfHighlightMode.Outline
' Creates list items
Dim itemCollection As PdfListFieldItemCollection = listBox.Items
'Add the items to the list box
itemCollection.Add(New PdfListFieldItem("English", "English"))
itemCollection.Add(New PdfListFieldItem("French", "French"))
itemCollection.Add(New PdfListFieldItem("German", "German"))
listBox.SelectedIndex = 0
document.Save("Form.pdf")
document.Close(True)

Constructors

PdfListFieldItemCollection()

Initializes a new instance of the PdfListFieldItemCollection class.

Declaration

public PdfListFieldItemCollection()

Examples

//Create a new PDf document
PdfDocument document = new PdfDocument();           
//Creates a new page and adds it as the last page of the document
PdfPage page = document.Pages.Add();                         
//Create list box
PdfListBoxField listBox = new PdfListBoxField(page, "list1");
//Add the field to listbox.
document.Form.Fields.Add(listBox);            
//Set the properties.
listBox.Bounds = new RectangleF(100, 350, 100, 50);
listBox.HighlightMode = PdfHighlightMode.Outline;            
// Creates list items
PdfListFieldItemCollection itemCollection = new PdfListFieldItemCollection();
itemCollection = listBox.Items;
//Add the items to the list box
itemCollection.Add(new PdfListFieldItem("English", "English"));
itemCollection.Add(new PdfListFieldItem("French", "French"));
itemCollection.Add(new PdfListFieldItem("German", "German"));
listBox.SelectedIndex = 0;            
document.Save("Form.pdf");
document.Close(true);

'Create a new PDf document
Dim document As PdfDocument = New PdfDocument()
'Create a page
Dim page As PdfPage = document.Pages.Add()
'Create list box
Dim listBox As PdfListBoxField = New PdfListBoxField(page, "list1")
'Add the field to listbox.
document.Form.Fields.Add(listBox)
'Set the properties.
listBox.Bounds = New RectangleF(100, 350, 100, 50)
listBox.HighlightMode = PdfHighlightMode.Outline
' Creates list items
Dim itemCollection As PdfListFieldItemCollection = New PdfListFieldItemCollection()
itemCollection = listBox.Items
'Add the items to the list box
itemCollection.Add(New PdfListFieldItem("English", "English"))
itemCollection.Add(New PdfListFieldItem("French", "French"))
itemCollection.Add(New PdfListFieldItem("German", "German"))
listBox.SelectedIndex = 0
document.Save("Form.pdf")
document.Close(True)

See Also

PdfCollection

Syncfusion.Pdf.IPdfWrapper

PdfDocument

PdfPage

PdfListBoxField

Properties

Item[Int32]

Gets the PdfListFieldItem at the specified index.[Read-Only]

Declaration

public PdfListFieldItem this[int index] { get; }

Parameters

Type	Name	Description
System.Int32	index

Property Value

Type	Description
PdfListFieldItem	The PdfListFieldItem object.

Examples

//Create a new PDf document
PdfDocument document = new PdfDocument();           
//Creates a new page and adds it as the last page of the document
PdfPage page = document.Pages.Add();                       
PdfFont font = new PdfStandardFont(PdfFontFamily.Courier, 12f);
//Create list box
PdfListBoxField listBox = new PdfListBoxField(page, "list1");
//Add the field to listbox.
document.Form.Fields.Add(listBox);            
//Set the properties.
listBox.Bounds = new RectangleF(100, 350, 100, 50);
listBox.HighlightMode = PdfHighlightMode.Outline;            
// Creates list items
PdfListFieldItemCollection itemCollection = listBox.Items;
//Add the items to the list box
itemCollection.Add(new PdfListFieldItem("English", "English"));
itemCollection.Add(new PdfListFieldItem("French", "French"));
itemCollection.Add(new PdfListFieldItem("German", "German"));
// Reading the second item in the collection and assigning new values
PdfListFieldItem item = itemCollection[1];
item.Text = "Arabic";
item.Value = "Arabic";
listBox.SelectedIndex = 0;            
document.Save("Form.pdf");
document.Close(true);

'Create a new PDf document
Dim document As PdfDocument = New PdfDocument()
'Create a page
Dim page As PdfPage = document.Pages.Add()
Dim font As PdfFont = New PdfStandardFont(PdfFontFamily.Courier, 12f)
'Create list box
Dim listBox As PdfListBoxField = New PdfListBoxField(page, "list1")
'Add the field to listbox.
document.Form.Fields.Add(listBox)
'Set the properties.
listBox.Bounds = New RectangleF(100, 350, 100, 50)
listBox.HighlightMode = PdfHighlightMode.Outline
' Creates list items
Dim itemCollection As PdfListFieldItemCollection = listBox.Items
'Add the items to the list box
itemCollection.Add(New PdfListFieldItem("English", "English"))
itemCollection.Add(New PdfListFieldItem("French", "French"))
itemCollection.Add(New PdfListFieldItem("German", "German"))
' Reading the second item in the collection and assigning new values
Dim item As PdfListFieldItem = itemCollection(1)
item.Text = "Arabic"
item.Value = "Arabic"
listBox.SelectedIndex = 0
document.Save("Form.pdf")
document.Close(True)

See Also

PdfDocument

PdfPage

PdfListBoxField

Methods

Add(PdfListFieldItem)

Adds the specified item in the collection.

Declaration

public int Add(PdfListFieldItem item)

Parameters

Type	Name	Description
PdfListFieldItem	item	The PdfListFieldItem object which to be added in the collection.

Returns

Type	Description
System.Int32	item

Examples

//Create a new PDf document
PdfDocument document = new PdfDocument();           
//Creates a new page and adds it as the last page of the document
PdfPage page = document.Pages.Add();    
//Create list box
PdfListBoxField listBox = new PdfListBoxField(page, "list1");
//Add the field to listbox.
document.Form.Fields.Add(listBox);            
//Set the properties.
listBox.Bounds = new RectangleF(100, 350, 100, 50);
listBox.HighlightMode = PdfHighlightMode.Outline;            
// Creates list items
PdfListFieldItemCollection itemCollection = listBox.Items;
//Add the items to the list box
itemCollection.Add(new PdfListFieldItem("English", "English"));
itemCollection.Add(new PdfListFieldItem("French", "French"));
itemCollection.Add(new PdfListFieldItem("German", "German"));
document.Save("Form.pdf");
document.Close(true);

'Create a new PDf document
Dim document As PdfDocument = New PdfDocument()
'Create a page
Dim page As PdfPage = document.Pages.Add()
Dim font As PdfFont = New PdfStandardFont(PdfFontFamily.Courier, 12f)
'Create list box
Dim listBox As PdfListBoxField = New PdfListBoxField(page, "list1")
'Add the field to listbox.
document.Form.Fields.Add(listBox)
'Set the properties.
listBox.Bounds = New RectangleF(100, 350, 100, 50)
listBox.HighlightMode = PdfHighlightMode.Outline
' Creates list items
Dim itemCollection As PdfListFieldItemCollection = listBox.Items
'Add the items to the list box
itemCollection.Add(New PdfListFieldItem("English", "English"))
itemCollection.Add(New PdfListFieldItem("French", "French"))
itemCollection.Add(New PdfListFieldItem("German", "German"))
document.Save("Form.pdf")
document.Close(True)

See Also

PdfDocument

PdfPage

PdfListBoxField

Clear()

Clears the collection.

Declaration

public void Clear()

Examples

//Create a new PDf document
PdfDocument document = new PdfDocument();           
//Creates a new page and adds it as the last page of the document
PdfPage page = document.Pages.Add();   
//Create list box
PdfListBoxField listBox = new PdfListBoxField(page, "list1");
//Add the field to listbox.
document.Form.Fields.Add(listBox);            
//Set the properties.
listBox.Bounds = new RectangleF(100, 350, 100, 50);            
// Creates list items
PdfListFieldItemCollection itemCollection = listBox.Items;
//Add the items to the list box            
PdfListFieldItem item = new PdfListFieldItem("English", "English");
itemCollection.Add(item);
itemCollection.Add(new PdfListFieldItem("French", "French"));
itemCollection.Add(new PdfListFieldItem("German", "German"));
// Clear the collection
itemCollection.Clear();
document.Save("Form.pdf");
document.Close(true);

'Create a new PDf document
Dim document As PdfDocument = New PdfDocument()
'Create a page
Dim page As PdfPage = document.Pages.Add()
'Create list box
Dim listBox As PdfListBoxField = New PdfListBoxField(page, "list1")
'Add the field to listbox.
document.Form.Fields.Add(listBox)
'Set the properties.
listBox.Bounds = New RectangleF(100, 350, 100, 50)
' Creates list items
Dim itemCollection As PdfListFieldItemCollection = listBox.Items
'Add the items to the list box            
Dim item As PdfListFieldItem = New PdfListFieldItem("English", "English")
itemCollection.Add(item)
itemCollection.Add(New PdfListFieldItem("French", "French"))
itemCollection.Add(New PdfListFieldItem("German", "German"))
' Clear the collection
itemCollection.Clear()
document.Save("Form.pdf")
document.Close(True)

See Also

PdfDocument

PdfPage

PdfListBoxField

Contains(PdfListFieldItem)

Determines whether the item is present in the collection.

Declaration

public bool Contains(PdfListFieldItem item)

Parameters

Type	Name	Description
PdfListFieldItem	item	Check whether PdfListFieldItem object is exists in the collection or not.

Returns

Type	Description
System.Boolean	true if the item is contained within the collection; otherwise, false.

Examples

//Create a new PDf document
PdfDocument document = new PdfDocument();           
//Creates a new page and adds it as the last page of the document
PdfPage page = document.Pages.Add();   
//Create list box
PdfListBoxField listBox = new PdfListBoxField(page, "list1");
//Add the field to listbox.
document.Form.Fields.Add(listBox);            
//Set the properties.
listBox.Bounds = new RectangleF(100, 350, 100, 50);            
// Creates list items
PdfListFieldItemCollection itemCollection = listBox.Items;
//Add the items to the list box            
PdfListFieldItem item = new PdfListFieldItem("English", "English");
itemCollection.Add(item);
itemCollection.Add(new PdfListFieldItem("French", "French"));
itemCollection.Add(new PdfListFieldItem("German", "German"));
if (itemCollection.Contains(item))
 MessageBox.Show("Already, item has added!");
else
 itemCollection.Add(item);
document.Save("Form.pdf");
document.Close(true);

'Create a new PDf document
Dim document As PdfDocument = New PdfDocument()
'Create a page
Dim page As PdfPage = document.Pages.Add()
'Create list box
Dim listBox As PdfListBoxField = New PdfListBoxField(page, "list1")
'Add the field to listbox.
document.Form.Fields.Add(listBox)
'Set the properties.
listBox.Bounds = New RectangleF(100, 350, 100, 50)
' Creates list items
Dim itemCollection As PdfListFieldItemCollection = listBox.Items
'Add the items to the list box            
Dim item As PdfListFieldItem = New PdfListFieldItem("English", "English")
itemCollection.Add(item)
itemCollection.Add(New PdfListFieldItem("French", "French"))
itemCollection.Add(New PdfListFieldItem("German", "German"))
If itemCollection.Contains(item) Then
 MessageBox.Show("Already, item has added!")
Else
 itemCollection.Add(item)
End If
document.Save("Form.pdf")
document.Close(True)

See Also

PdfDocument

PdfPage

PdfListBoxField

IndexOf(PdfListFieldItem)

Gets the index of the specified item.

Declaration

public int IndexOf(PdfListFieldItem item)

Parameters

Type	Name	Description
PdfListFieldItem	item	A PdfListFieldItem object whose index is requested.

Returns

Type	Description
System.Int32	The index of the given item, -1 if the item does not exist.

Examples

//Create a new PDf document
PdfDocument document = new PdfDocument();           
//Creates a new page and adds it as the last page of the document
PdfPage page = document.Pages.Add();   
//Create list box
PdfListBoxField listBox = new PdfListBoxField(page, "list1");
//Add the field to listbox.
document.Form.Fields.Add(listBox);            
//Set the properties.
listBox.Bounds = new RectangleF(100, 350, 100, 50);            
// Creates list items
PdfListFieldItemCollection itemCollection = listBox.Items;
//Add the items to the list box            
PdfListFieldItem item = new PdfListFieldItem("English", "English");
itemCollection.Add(item);
itemCollection.Add(new PdfListFieldItem("French", "French"));
itemCollection.Add(new PdfListFieldItem("German", "German"));
// Gets the index of an item
int index = itemCollection.IndexOf(item);
document.Save("Form.pdf");
document.Close(true);

'Create a new PDf document
Dim document As PdfDocument = New PdfDocument()
'Create a page
Dim page As PdfPage = document.Pages.Add()
'Create list box
Dim listBox As PdfListBoxField = New PdfListBoxField(page, "list1")
'Add the field to listbox.
document.Form.Fields.Add(listBox)
'Set the properties.
listBox.Bounds = New RectangleF(100, 350, 100, 50)
' Creates list items
Dim itemCollection As PdfListFieldItemCollection = listBox.Items
'Add the items to the list box            
Dim item As PdfListFieldItem = New PdfListFieldItem("English", "English")
itemCollection.Add(item)
itemCollection.Add(New PdfListFieldItem("French", "French"))
itemCollection.Add(New PdfListFieldItem("German", "German"))
' Gets the index of an item
Dim index As Integer = itemCollection.IndexOf(item)
document.Save("Form.pdf")
document.Close(True)

See Also

PdfDocument

PdfPage

PdfListBoxField

Insert(Int32, PdfListFieldItem)

Inserts the list item field at the specified index.

Declaration

public void Insert(int index, PdfListFieldItem item)

Parameters

Type	Name	Description
System.Int32	index	The index where to insert the new item.
PdfListFieldItem	item	The PdfListFieldItem object to be added to collection.

Examples

//Create a new PDf document
PdfDocument document = new PdfDocument();           
//Creates a new page and adds it as the last page of the document
PdfPage page = document.Pages.Add();    
//Create list box
PdfListBoxField listBox = new PdfListBoxField(page, "list1");
//Add the field to listbox.
document.Form.Fields.Add(listBox);            
//Set the properties.
listBox.Bounds = new RectangleF(100, 350, 100, 50);
listBox.HighlightMode = PdfHighlightMode.Outline;            
// Creates list items
PdfListFieldItemCollection itemCollection = listBox.Items;
//Add the items to the list box
itemCollection.Add(new PdfListFieldItem("English", "English"));
itemCollection.Add(new PdfListFieldItem("French", "French"));
itemCollection.Add(new PdfListFieldItem("German", "German"));
PdfListFieldItem item = new PdfListFieldItem("Arabic", "Arabic");
// Inserting an item at second position
itemCollection.Insert(1, item);
document.Save("Form.pdf");
document.Close(true);

'Create a new PDf document
Dim document As PdfDocument = New PdfDocument()
'Create a page
Dim page As PdfPage = document.Pages.Add()
'Create list box
Dim listBox As PdfListBoxField = New PdfListBoxField(page, "list1")
'Add the field to listbox.
document.Form.Fields.Add(listBox)
'Set the properties.
listBox.Bounds = New RectangleF(100, 350, 100, 50)
listBox.HighlightMode = PdfHighlightMode.Outline
' Creates list items
Dim itemCollection As PdfListFieldItemCollection = listBox.Items
'Add the items to the list box
itemCollection.Add(New PdfListFieldItem("English", "English"))
itemCollection.Add(New PdfListFieldItem("French", "French"))
itemCollection.Add(New PdfListFieldItem("German", "German"))
Dim item As PdfListFieldItem = New PdfListFieldItem("Arabic", "Arabic")
' Inserting an item at second position
itemCollection.Insert(1, item)
document.Save("Form.pdf")
document.Close(True)

See Also

PdfDocument

PdfPage

PdfListBoxField

Remove(PdfListFieldItem)

Removes the specified PdfListFieldItem.

Declaration

public void Remove(PdfListFieldItem item)

Parameters

Type	Name	Description
PdfListFieldItem	item	The PdfListFieldItem object which to be removed in the collection.

Examples

//Create a new PDf document
PdfDocument document = new PdfDocument();           
//Creates a new page and adds it as the last page of the document
PdfPage page = document.Pages.Add();   
//Create list box
PdfListBoxField listBox = new PdfListBoxField(page, "list1");
//Add the field to listbox.
document.Form.Fields.Add(listBox);            
//Set the properties.
listBox.Bounds = new RectangleF(100, 350, 100, 50);            
// Creates list items
PdfListFieldItemCollection itemCollection = listBox.Items;
//Add the items to the list box            
PdfListFieldItem item = new PdfListFieldItem("English", "English");
itemCollection.Add(item);
itemCollection.Add(new PdfListFieldItem("French", "French"));
itemCollection.Add(new PdfListFieldItem("German", "German"));
// Remove an item from collection
itemCollection.Remove(item);
document.Save("Form.pdf");
document.Close(true);

'Create a new PDf document
Dim document As PdfDocument = New PdfDocument()
'Create a page
Dim page As PdfPage = document.Pages.Add()
'Create list box
Dim listBox As PdfListBoxField = New PdfListBoxField(page, "list1")
'Add the field to listbox.
document.Form.Fields.Add(listBox)
'Set the properties.
listBox.Bounds = New RectangleF(100, 350, 100, 50)
' Creates list items
Dim itemCollection As PdfListFieldItemCollection = listBox.Items
'Add the items to the list box            
Dim item As PdfListFieldItem = New PdfListFieldItem("English", "English")
itemCollection.Add(item)
itemCollection.Add(New PdfListFieldItem("French", "French"))
itemCollection.Add(New PdfListFieldItem("German", "German"))
' Remove an item from collection
itemCollection.Remove(item)
document.Save("Form.pdf")
document.Close(True)

See Also

PdfDocument

PdfPage

PdfListBoxField

RemoveAt(Int32)

Removes the item at the specified position.

Declaration

public void RemoveAt(int index)

Parameters

Type	Name	Description
System.Int32	index	The index where to remove the item.

Examples

//Create a new PDf document
PdfDocument document = new PdfDocument();           
//Creates a new page and adds it as the last page of the document
PdfPage page = document.Pages.Add();   
//Create list box
PdfListBoxField listBox = new PdfListBoxField(page, "list1");
//Add the field to listbox.
document.Form.Fields.Add(listBox);            
//Set the properties.
listBox.Bounds = new RectangleF(100, 350, 100, 50);            
// Creates list items
PdfListFieldItemCollection itemCollection = listBox.Items;
//Add the items to the list box            
PdfListFieldItem item = new PdfListFieldItem("English", "English");
itemCollection.Add(item);
itemCollection.Add(new PdfListFieldItem("French", "French"));
itemCollection.Add(new PdfListFieldItem("German", "German"));
// Remove an item from collection
itemCollection.RemoveAt(1);
document.Save("Form.pdf");
document.Close(true);

'Create a new PDf document
Dim document As PdfDocument = New PdfDocument()
'Create a page
Dim page As PdfPage = document.Pages.Add()
'Create list box
Dim listBox As PdfListBoxField = New PdfListBoxField(page, "list1")
'Add the field to listbox.
document.Form.Fields.Add(listBox)
'Set the properties.
listBox.Bounds = New RectangleF(100, 350, 100, 50)
' Creates list items
Dim itemCollection As PdfListFieldItemCollection = listBox.Items
'Add the items to the list box            
Dim item As PdfListFieldItem = New PdfListFieldItem("English", "English")
itemCollection.Add(item)
itemCollection.Add(New PdfListFieldItem("French", "French"))
itemCollection.Add(New PdfListFieldItem("German", "German"))
' Remove an item from collection
itemCollection.RemoveAt(1)
document.Save("Form.pdf")
document.Close(True)

See Also

PdfDocument

PdfPage

PdfListBoxField

Implements

System.Collections.IEnumerable

Extension Methods

EnumerableExtensions.GetElementType(IEnumerable)

EnumerableExtensions.GetItemPropertyInfo(IEnumerable)

FunctionalExtensions.ForEach<T>(IEnumerable, Action<T>)

FunctionalExtensions.ToList<T>(IEnumerable)

QueryableExtensions.OfQueryable(IEnumerable)

QueryableExtensions.OfQueryable(IEnumerable, Type)

QueryableExtensions.GroupByMany<TElement>(IEnumerable, Type, List<Func<TElement, Object>>)

QueryableExtensions.GroupByMany(IEnumerable, Type, Func<String, Expression>, String[])

QueryableExtensions.GroupByMany(IEnumerable, Type, List<SortDescriptor>, Dictionary<String, IComparer<Object>>, Func<String, Expression>, String[])

QueryableExtensions.GroupByMany(IEnumerable, Type, List<SortDescriptor>, Func<String, Expression>, String[])

See Also

PdfCollection

Syncfusion.Pdf.IPdfWrapper

PdfDocument

PdfPage

PdfListBoxField