Class PdfXfaCheckBoxField

Represents checkbox field of the XFA form.

Inheritance

System.Object

PdfXfaField

PdfXfaStyledField

PdfXfaCheckBoxField

Inherited Members

PdfXfaStyledField.Width

PdfXfaStyledField.Height

PdfXfaStyledField.Border

PdfXfaStyledField.ToolTip

PdfXfaStyledField.ReadOnly

PdfXfaStyledField.Font

PdfXfaStyledField.ForeColor

PdfXfaStyledField.HorizontalAlignment

PdfXfaStyledField.VerticalAlignment

PdfXfaStyledField.Rotate

PdfXfaField.Name

PdfXfaField.Margins

PdfXfaField.Visibility

System.Object.ToString()

System.Object.Equals(System.Object)

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

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

System.Object.GetHashCode()

System.Object.GetType()

System.Object.MemberwiseClone()

Namespace: Syncfusion.Pdf.Xfa

Assembly: Syncfusion.Pdf.Base.dll

Syntax

public class PdfXfaCheckBoxField : PdfXfaStyledField

Examples

//Create a new PDF XFA document.
PdfXfaDocument document = new PdfXfaDocument();
//Create a form.
PdfXfaForm xfaForm = new PdfXfaForm(PdfXfaFlowDirection.Vertical, 595);
//Set margin of the form.            
xfaForm.Margins.All = 10;
//Create new XFA check box field.
PdfXfaCheckBoxField field = new PdfXfaCheckBoxField("check1", new SizeF(100, 30));
//Set caption.
field.Caption.Text = "CheckBox";         
//Set checkbox appearance.
field.CheckBoxAppearance = PdfXfaCheckBoxAppearance.Square;
//Set the check box size.
field.CheckBoxSize = 10;
//Set the checked style.
field.CheckedStyle = PdfXfaCheckedStyle.Cross;  
//Set the check box checked state.         
field.IsChecked = true;
//Add the field to form.
xfaForm.Fields.Add(field);          
document.XfaForm = xfaForm;
//Save the document.
document.Save("output.pdf", PdfXfaType.Dynamic);
//Close the document
document.Close();

'Create a new PDF XFA document.
Dim document As New PdfXfaDocument()
'Create a form.
Dim xfaForm As New PdfXfaForm(PdfXfaFlowDirection.Vertical, 595)
'Set margin of the form.            
xfaForm.Margins.All = 10
'Create new XFA check box field.
Dim field As New PdfXfaCheckBoxField("check1", New SizeF(100, 30))
'Set caption.
field.Caption.Text = "CheckBox"
'Set checkbox appearance.
field.CheckBoxAppearance = PdfXfaCheckBoxAppearance.Square
'Set the check box size.
field.CheckBoxSize = 10
'Set the checked style.
field.CheckedStyle = PdfXfaCheckedStyle.Cross
'Set the check box checked state.         
field.IsChecked = True
'Add the field to form.
xfaForm.Fields.Add(field)
document.XfaForm = xfaForm
'Save the document.
document.Save("output.pdf", PdfXfaType.Dynamic)
'Close the document
document.Close()

Constructors

PdfXfaCheckBoxField(String, SizeF)

Initializes a new instance of the PdfXfaCheckBoxField class.

Declaration

public PdfXfaCheckBoxField(string name, SizeF size)

Parameters

Type	Name	Description
System.String	name	The name of the check box field.
System.Drawing.SizeF	size	The size of the check box field.

Examples

//Create a new PDF XFA document.
PdfXfaDocument document = new PdfXfaDocument();
//Create a form.
PdfXfaForm xfaForm = new PdfXfaForm(PdfXfaFlowDirection.Vertical, 595);
//Set margin of the form.            
xfaForm.Margins.All = 10;
//Create new XFA check box field.
PdfXfaCheckBoxField field = new PdfXfaCheckBoxField("check1", new SizeF(100, 30));
//Set caption.
field.Caption.Text = "CheckBox";         
//Set checkbox appearance.
field.CheckBoxAppearance = PdfXfaCheckBoxAppearance.Square;
//Set the check box size.
field.CheckBoxSize = 10;
//Set the checked style.
field.CheckedStyle = PdfXfaCheckedStyle.Cross;  
//Set the check box checked state.         
field.IsChecked = true;
//Add the field to form.
xfaForm.Fields.Add(field);          
document.XfaForm = xfaForm;
//Save the document.
document.Save("output.pdf", PdfXfaType.Dynamic);
//Close the document
document.Close();

'Create a new PDF XFA document.
Dim document As New PdfXfaDocument()
'Create a form.
Dim xfaForm As New PdfXfaForm(PdfXfaFlowDirection.Vertical, 595)
'Set margin of the form.            
xfaForm.Margins.All = 10
'Create new XFA check box field.
Dim field As New PdfXfaCheckBoxField("check1", New SizeF(100, 30))
'Set caption.
field.Caption.Text = "CheckBox"
'Set checkbox appearance.
field.CheckBoxAppearance = PdfXfaCheckBoxAppearance.Square
'Set the check box size.
field.CheckBoxSize = 10
'Set the checked style.
field.CheckedStyle = PdfXfaCheckedStyle.Cross
'Set the check box checked state.         
field.IsChecked = True
'Add the field to form.
xfaForm.Fields.Add(field)
document.XfaForm = xfaForm
'Save the document.
document.Save("output.pdf", PdfXfaType.Dynamic)
'Close the document
document.Close()

PdfXfaCheckBoxField(String, SizeF, Boolean)

Initializes a new instance of the PdfXfaCheckBoxField class.

Declaration

public PdfXfaCheckBoxField(string name, SizeF size, bool isChecked)

Parameters

Type	Name	Description
System.String	name	The name of the check box field
System.Drawing.SizeF	size	The size of the check box field
System.Boolean	isChecked	The checked state of the check box

Examples

//Create a new PDF XFA document.
PdfXfaDocument document = new PdfXfaDocument();
//Create a form.
PdfXfaForm xfaForm = new PdfXfaForm(PdfXfaFlowDirection.Vertical, 595);
//Set margin of the form.            
xfaForm.Margins.All = 10;
//Create new XFA check box field.
PdfXfaCheckBoxField field = new PdfXfaCheckBoxField("check1", new SizeF(100, 30), true);
//Set caption.
field.Caption.Text = "CheckBox";         
//Set checkbox appearance.
field.CheckBoxAppearance = PdfXfaCheckBoxAppearance.Square;
//Set the check box size.
field.CheckBoxSize = 10;
//Set the checked style.
field.CheckedStyle = PdfXfaCheckedStyle.Cross; 
//Add the field to form.
xfaForm.Fields.Add(field);          
document.XfaForm = xfaForm;
//Save the document.
document.Save("output.pdf", PdfXfaType.Dynamic);
//Close the document
document.Close();

'Create a new PDF XFA document.
Dim document As New PdfXfaDocument()
'Create a form.
Dim xfaForm As New PdfXfaForm(PdfXfaFlowDirection.Vertical, 595)
'Set margin of the form.            
xfaForm.Margins.All = 10
'Create new XFA check box field.
Dim field As New PdfXfaCheckBoxField("check1", New SizeF(100, 30), True)
'Set caption.
field.Caption.Text = "CheckBox"
'Set checkbox appearance.
field.CheckBoxAppearance = PdfXfaCheckBoxAppearance.Square
'Set the check box size.
field.CheckBoxSize = 10
'Set the checked style.
field.CheckedStyle = PdfXfaCheckedStyle.Cross       
'Add the field to form.
xfaForm.Fields.Add(field)
document.XfaForm = xfaForm
'Save the document.
document.Save("output.pdf", PdfXfaType.Dynamic)
'Close the document
document.Close()

PdfXfaCheckBoxField(String, Single, Single)

Initializes a new instance of the PdfXfaCheckBoxField class.

Declaration

public PdfXfaCheckBoxField(string name, float width, float height)

Parameters

Type	Name	Description
System.String	name	Name of the check box field.
System.Single	width	Check box field width.
System.Single	height	Check box field height.

Examples

//Create a new PDF XFA document.
PdfXfaDocument document = new PdfXfaDocument();
//Create a form.
PdfXfaForm xfaForm = new PdfXfaForm(PdfXfaFlowDirection.Vertical, 595);
//Set margin of the form.            
xfaForm.Margins.All = 10;
//Create new XFA check box field.
PdfXfaCheckBoxField field = new PdfXfaCheckBoxField("check1", 100, 30);
//Set caption.
field.Caption.Text = "CheckBox";         
//Set checkbox appearance.
field.CheckBoxAppearance = PdfXfaCheckBoxAppearance.Square;
//Set the check box size.
field.CheckBoxSize = 10;
//Set the checked style.
field.CheckedStyle = PdfXfaCheckedStyle.Cross;  
//Set the check box checked state.         
field.IsChecked = true;
//Add the field to form.
xfaForm.Fields.Add(field);          
document.XfaForm = xfaForm;
//Save the document.
document.Save("output.pdf", PdfXfaType.Dynamic);
//Close the document
document.Close();

'Create a new PDF XFA document.
Dim document As New PdfXfaDocument()
'Create a form.
Dim xfaForm As New PdfXfaForm(PdfXfaFlowDirection.Vertical, 595)
'Set margin of the form.            
xfaForm.Margins.All = 10
'Create new XFA check box field.
Dim field As New PdfXfaCheckBoxField("check1", 100, 30)
'Set caption.
field.Caption.Text = "CheckBox"
'Set checkbox appearance.
field.CheckBoxAppearance = PdfXfaCheckBoxAppearance.Square
'Set the check box size.
field.CheckBoxSize = 10
'Set the checked style.
field.CheckedStyle = PdfXfaCheckedStyle.Cross
'Set the check box checked state.         
field.IsChecked = True
'Add the field to form.
xfaForm.Fields.Add(field)
document.XfaForm = xfaForm
'Save the document.
document.Save("output.pdf", PdfXfaType.Dynamic)
'Close the document
document.Close()

PdfXfaCheckBoxField(String, Single, Single, Boolean)

Initializes a new instance of the PdfXfaCheckBoxField class.

Declaration

public PdfXfaCheckBoxField(string name, float width, float height, bool isChecked)

Parameters

Type	Name	Description
System.String	name	Name of the check box field.
System.Single	width	Check box field width.
System.Single	height	Check box field height.
System.Boolean	isChecked	Checked state of the field.

Examples

//Create a new PDF XFA document.
PdfXfaDocument document = new PdfXfaDocument();
//Create a form.
PdfXfaForm xfaForm = new PdfXfaForm(PdfXfaFlowDirection.Vertical, 595);
//Set margin of the form.            
xfaForm.Margins.All = 10;
//Create new XFA check box field.
PdfXfaCheckBoxField field = new PdfXfaCheckBoxField("check1", 100, 30, true);
//Set caption.
field.Caption.Text = "CheckBox";         
//Set checkbox appearance.
field.CheckBoxAppearance = PdfXfaCheckBoxAppearance.Square;
//Set the check box size.
field.CheckBoxSize = 10;
//Set the checked style.
field.CheckedStyle = PdfXfaCheckedStyle.Cross; 
//Add the field to form.
xfaForm.Fields.Add(field);          
document.XfaForm = xfaForm;
//Save the document.
document.Save("output.pdf", PdfXfaType.Dynamic);
//Close the document
document.Close();

'Create a new PDF XFA document.
Dim document As New PdfXfaDocument()
'Create a form.
Dim xfaForm As New PdfXfaForm(PdfXfaFlowDirection.Vertical, 595)
'Set margin of the form.            
xfaForm.Margins.All = 10
'Create new XFA check box field.
Dim field As New PdfXfaCheckBoxField("check1", 100, 30, True)
'Set caption.
field.Caption.Text = "CheckBox"
'Set checkbox appearance.
field.CheckBoxAppearance = PdfXfaCheckBoxAppearance.Square
'Set the check box size.
field.CheckBoxSize = 10
'Set the checked style.
field.CheckedStyle = PdfXfaCheckedStyle.Cross      
'Add the field to form.
xfaForm.Fields.Add(field)
document.XfaForm = xfaForm
'Save the document.
document.Save("output.pdf", PdfXfaType.Dynamic)
'Close the document
document.Close()

Properties

Caption

Gets or sets the caption of the field

Declaration

public PdfXfaCaption Caption { get; set; }

Property Value

Type	Description
PdfXfaCaption

Examples

//Create a new PDF XFA document.
PdfXfaDocument document = new PdfXfaDocument();
//Create a form.
PdfXfaForm xfaForm = new PdfXfaForm(PdfXfaFlowDirection.Vertical, 595);
//Set margin of the form.            
xfaForm.Margins.All = 10;
//Create new XFA check box field.
PdfXfaCheckBoxField field = new PdfXfaCheckBoxField("check1", new SizeF(100, 30));
//Set caption.
field.Caption.Text = "CheckBox";         
//Set checkbox appearance.
field.CheckBoxAppearance = PdfXfaCheckBoxAppearance.Square;
//Set the check box size.
field.CheckBoxSize = 10;
//Set the checked style.
field.CheckedStyle = PdfXfaCheckedStyle.Cross;  
//Set the check box checked state.         
field.IsChecked = true;
//Add the field to form.
xfaForm.Fields.Add(field);          
document.XfaForm = xfaForm;
//Save the document.
document.Save("output.pdf", PdfXfaType.Dynamic);
//Close the document
document.Close();

'Create a new PDF XFA document.
Dim document As New PdfXfaDocument()
'Create a form.
Dim xfaForm As New PdfXfaForm(PdfXfaFlowDirection.Vertical, 595)
'Set margin of the form.            
xfaForm.Margins.All = 10
'Create new XFA check box field.
Dim field As New PdfXfaCheckBoxField("check1", New SizeF(100, 30))
'Set caption.
field.Caption.Text = "CheckBox"
'Set checkbox appearance.
field.CheckBoxAppearance = PdfXfaCheckBoxAppearance.Square
'Set the check box size.
field.CheckBoxSize = 10
'Set the checked style.
field.CheckedStyle = PdfXfaCheckedStyle.Cross
'Set the check box checked state.         
field.IsChecked = True
'Add the field to form.
xfaForm.Fields.Add(field)
document.XfaForm = xfaForm
'Save the document.
document.Save("output.pdf", PdfXfaType.Dynamic)
'Close the document
document.Close()

CheckBoxAppearance

Gets or sets the appearance of the check box field

Declaration

public PdfXfaCheckBoxAppearance CheckBoxAppearance { get; set; }

Property Value

Type	Description
PdfXfaCheckBoxAppearance

Examples

//Create a new PDF XFA document.
PdfXfaDocument document = new PdfXfaDocument();
//Create a form.
PdfXfaForm xfaForm = new PdfXfaForm(PdfXfaFlowDirection.Vertical, 595);
//Set margin of the form.            
xfaForm.Margins.All = 10;
//Create new XFA check box field.
PdfXfaCheckBoxField field = new PdfXfaCheckBoxField("check1", new SizeF(100, 30));
//Set caption.
field.Caption.Text = "CheckBox";         
//Set checkbox appearance.
field.CheckBoxAppearance = PdfXfaCheckBoxAppearance.Square;
//Set the check box size.
field.CheckBoxSize = 10;
//Set the checked style.
field.CheckedStyle = PdfXfaCheckedStyle.Cross;  
//Set the check box checked state.         
field.IsChecked = true;
//Add the field to form.
xfaForm.Fields.Add(field);          
document.XfaForm = xfaForm;
//Save the document.
document.Save("output.pdf", PdfXfaType.Dynamic);
//Close the document
document.Close();

'Create a new PDF XFA document.
Dim document As New PdfXfaDocument()
'Create a form.
Dim xfaForm As New PdfXfaForm(PdfXfaFlowDirection.Vertical, 595)
'Set margin of the form.            
xfaForm.Margins.All = 10
'Create new XFA check box field.
Dim field As New PdfXfaCheckBoxField("check1", New SizeF(100, 30))
'Set caption.
field.Caption.Text = "CheckBox"
'Set checkbox appearance.
field.CheckBoxAppearance = PdfXfaCheckBoxAppearance.Square
'Set the check box size.
field.CheckBoxSize = 10
'Set the checked style.
field.CheckedStyle = PdfXfaCheckedStyle.Cross
'Set the check box checked state.         
field.IsChecked = True
'Add the field to form.
xfaForm.Fields.Add(field)
document.XfaForm = xfaForm
'Save the document.
document.Save("output.pdf", PdfXfaType.Dynamic)
'Close the document
document.Close()

CheckBoxSize

Gets or sets the check box size

Declaration

public float CheckBoxSize { get; set; }

Property Value

Type	Description
System.Single

Examples

//Create a new PDF XFA document.
PdfXfaDocument document = new PdfXfaDocument();
//Create a form.
PdfXfaForm xfaForm = new PdfXfaForm(PdfXfaFlowDirection.Vertical, 595);
//Set margin of the form.            
xfaForm.Margins.All = 10;
//Create new XFA check box field.
PdfXfaCheckBoxField field = new PdfXfaCheckBoxField("check1", new SizeF(100, 30));
//Set caption.
field.Caption.Text = "CheckBox";         
//Set checkbox appearance.
field.CheckBoxAppearance = PdfXfaCheckBoxAppearance.Square;
//Set the check box size.
field.CheckBoxSize = 10;
//Set the checked style.
field.CheckedStyle = PdfXfaCheckedStyle.Cross;  
//Set the check box checked state.         
field.IsChecked = true;
//Add the field to form.
xfaForm.Fields.Add(field);          
document.XfaForm = xfaForm;
//Save the document.
document.Save("output.pdf", PdfXfaType.Dynamic);
//Close the document
document.Close();

'Create a new PDF XFA document.
Dim document As New PdfXfaDocument()
'Create a form.
Dim xfaForm As New PdfXfaForm(PdfXfaFlowDirection.Vertical, 595)
'Set margin of the form.            
xfaForm.Margins.All = 10
'Create new XFA check box field.
Dim field As New PdfXfaCheckBoxField("check1", New SizeF(100, 30))
'Set caption.
field.Caption.Text = "CheckBox"
'Set checkbox appearance.
field.CheckBoxAppearance = PdfXfaCheckBoxAppearance.Square
'Set the check box size.
field.CheckBoxSize = 10
'Set the checked style.
field.CheckedStyle = PdfXfaCheckedStyle.Cross
'Set the check box checked state.         
field.IsChecked = True
'Add the field to form.
xfaForm.Fields.Add(field)
document.XfaForm = xfaForm
'Save the document.
document.Save("output.pdf", PdfXfaType.Dynamic)
'Close the document
document.Close()

CheckedStyle

Gets or sets the checked Style of the check box field

Declaration

public PdfXfaCheckedStyle CheckedStyle { get; set; }

Property Value

Type	Description
PdfXfaCheckedStyle

Examples

//Create a new PDF XFA document.
PdfXfaDocument document = new PdfXfaDocument();
//Create a form.
PdfXfaForm xfaForm = new PdfXfaForm(PdfXfaFlowDirection.Vertical, 595);
//Set margin of the form.            
xfaForm.Margins.All = 10;
//Create new XFA check box field.
PdfXfaCheckBoxField field = new PdfXfaCheckBoxField("check1", new SizeF(100, 30));
//Set caption.
field.Caption.Text = "CheckBox";         
//Set checkbox appearance.
field.CheckBoxAppearance = PdfXfaCheckBoxAppearance.Square;
//Set the check box size.
field.CheckBoxSize = 10;
//Set the checked style.
field.CheckedStyle = PdfXfaCheckedStyle.Cross;  
//Set the check box checked state.         
field.IsChecked = true;
//Add the field to form.
xfaForm.Fields.Add(field);          
document.XfaForm = xfaForm;
//Save the document.
document.Save("output.pdf", PdfXfaType.Dynamic);
//Close the document
document.Close();

'Create a new PDF XFA document.
Dim document As New PdfXfaDocument()
'Create a form.
Dim xfaForm As New PdfXfaForm(PdfXfaFlowDirection.Vertical, 595)
'Set margin of the form.            
xfaForm.Margins.All = 10
'Create new XFA check box field.
Dim field As New PdfXfaCheckBoxField("check1", New SizeF(100, 30))
'Set caption.
field.Caption.Text = "CheckBox"
'Set checkbox appearance.
field.CheckBoxAppearance = PdfXfaCheckBoxAppearance.Square
'Set the check box size.
field.CheckBoxSize = 10
'Set the checked style.
field.CheckedStyle = PdfXfaCheckedStyle.Cross
'Set the check box checked state.         
field.IsChecked = True
'Add the field to form.
xfaForm.Fields.Add(field)
document.XfaForm = xfaForm
'Save the document.
document.Save("output.pdf", PdfXfaType.Dynamic)
'Close the document
document.Close()

IsChecked

Gets or sets a value indicating whether this is checked or not

Declaration

public bool IsChecked { get; set; }

Property Value

Type	Description
System.Boolean

Examples

//Create a new PDF XFA document.
PdfXfaDocument document = new PdfXfaDocument();
//Create a form.
PdfXfaForm xfaForm = new PdfXfaForm(PdfXfaFlowDirection.Vertical, 595);
//Set margin of the form.            
xfaForm.Margins.All = 10;
//Create new XFA check box field.
PdfXfaCheckBoxField field = new PdfXfaCheckBoxField("check1", new SizeF(100, 30));
//Set caption.
field.Caption.Text = "CheckBox";         
//Set checkbox appearance.
field.CheckBoxAppearance = PdfXfaCheckBoxAppearance.Square;
//Set the check box size.
field.CheckBoxSize = 10;
//Set the checked style.
field.CheckedStyle = PdfXfaCheckedStyle.Cross;  
//Set the check box checked state.         
field.IsChecked = true;
//Add the field to form.
xfaForm.Fields.Add(field);          
document.XfaForm = xfaForm;
//Save the document.
document.Save("output.pdf", PdfXfaType.Dynamic);
//Close the document
document.Close();

'Create a new PDF XFA document.
Dim document As New PdfXfaDocument()
'Create a form.
Dim xfaForm As New PdfXfaForm(PdfXfaFlowDirection.Vertical, 595)
'Set margin of the form.            
xfaForm.Margins.All = 10
'Create new XFA check box field.
Dim field As New PdfXfaCheckBoxField("check1", New SizeF(100, 30))
'Set caption.
field.Caption.Text = "CheckBox"
'Set checkbox appearance.
field.CheckBoxAppearance = PdfXfaCheckBoxAppearance.Square
'Set the check box size.
field.CheckBoxSize = 10
'Set the checked style.
field.CheckedStyle = PdfXfaCheckedStyle.Cross
'Set the check box checked state.         
field.IsChecked = True
'Add the field to form.
xfaForm.Fields.Add(field)
document.XfaForm = xfaForm
'Save the document.
document.Save("output.pdf", PdfXfaType.Dynamic)
'Close the document
document.Close()

Methods

Clone()

Creates a new object that is a copy of the current instance.

Declaration

public object Clone()

Returns

Type	Description
System.Object	The copy of the new object for this instance.

Examples

//Create a new PDF XFA document.
PdfXfaDocument document = new PdfXfaDocument();
//Create a form.
PdfXfaForm xfaForm = new PdfXfaForm(PdfXfaFlowDirection.Vertical, 595);
//Set margin of the form.            
xfaForm.Margins.All = 10;
//Create new XFA check box field.
PdfXfaCheckBoxField field = new PdfXfaCheckBoxField("check1", new SizeF(100, 30));
//Set caption.
field.Caption.Text = "CheckBox";         
//Set checkbox appearance.
field.CheckBoxAppearance = PdfXfaCheckBoxAppearance.Square;
//Set the check box size.
field.CheckBoxSize = 10;
//Set the checked style.
field.CheckedStyle = PdfXfaCheckedStyle.Cross;  
//Set the check box checked state.         
field.IsChecked = true;
//Add the field to form.
xfaForm.Fields.Add(field);    
//Clone the check box field.
xfaForm.Fields.Add(field.Clone() as PdfXfaCheckBoxField);  
document.XfaForm = xfaForm;
//Save the document.
document.Save("output.pdf", PdfXfaType.Dynamic);
//Close the document
document.Close();

'Create a new PDF XFA document.
Dim document As New PdfXfaDocument()
'Create a form.
Dim xfaForm As New PdfXfaForm(PdfXfaFlowDirection.Vertical, 595)
'Set margin of the form.            
xfaForm.Margins.All = 10
'Create new XFA check box field.
Dim field As New PdfXfaCheckBoxField("check1", New SizeF(100, 30))
'Set caption.
field.Caption.Text = "CheckBox"
'Set checkbox appearance.
field.CheckBoxAppearance = PdfXfaCheckBoxAppearance.Square
'Set the check box size.
field.CheckBoxSize = 10
'Set the checked style.
field.CheckedStyle = PdfXfaCheckedStyle.Cross
'Set the check box checked state.         
field.IsChecked = True
'Add the field to form.
xfaForm.Fields.Add(field)
'Clone the check box field.
xfaForm.Fields.Add(TryCast(field.Clone(), PdfXfaCheckBoxField))  
document.XfaForm = xfaForm
'Save the document.
document.Save("output.pdf", PdfXfaType.Dynamic)
'Close the document
document.Close()