PdfGraphicsAcroFormSignatureField.ContentImage Property

Specifies an image displayed in the signature form field.

Namespace: DevExpress.Pdf

Assembly: DevExpress.Pdf.v21.1.Drawing.dll

NuGet Package: DevExpress.Pdf.Drawing

Declaration

C#

public Image ContentImage { get; set; }

VB.NET

Public Property ContentImage As Image

Property Value

Type	Description
Image	A Image object that is an image displayed in the signature form field.

Remarks

The appearance settings of the signature form field (e.g., Text, Appearance) are ignored if the ContentImage property is specified.

Use the StretchContentImage property to specify whether to stretch an image to fill the form field rectangle.

Example

This example shows how to use PDF Graphics API to create a signature field and add it to a new PDF page.

View Example

Program.cs

using DevExpress.Pdf;
using System.Drawing;

//...

static void Main(string[] args)
{
    using (PdfDocumentProcessor processor = new PdfDocumentProcessor())
    {
        // Create an empty document. 
        processor.CreateEmptyDocument("..\\..\\Result.pdf");

        // Create graphics and draw a signature field.
        using (PdfGraphics graphics = processor.CreateGraphics())
        {
            DrawSignatureField(graphics);

            // Render a page with graphics.
            processor.RenderNewPage(PdfPaperSize.Letter, graphics);
        }
    }
}

static void DrawSignatureField(PdfGraphics graphics)
{
    // Create a signature field
    PdfGraphicsAcroFormSignatureField signature = new PdfGraphicsAcroFormSignatureField("signature", new RectangleF(0, 20, 120, 130));

    // Specify a content image for the signature field.
    Image image = Image.FromFile("..\\..\\Image.png");
    signature.ContentImage = image;            

    // Add the field to the document.
    graphics.AddFormField(signature);
}

Program.vb

Imports DevExpress.Pdf
Imports System.Drawing

Shared Sub Main(ByVal args() As String)
    Using processor As New PdfDocumentProcessor()

        ' Create an empty document. 
        processor.CreateEmptyDocument("..\..\Result.pdf")

        ' Create graphics and draw a signature field.
        Using graphics As PdfGraphics = processor.CreateGraphics()
            DrawSignatureField(graphics)

            ' Render a page with graphics.
            processor.RenderNewPage(PdfPaperSize.Letter, graphics)
        End Using
    End Using
End Sub

Private Shared Sub DrawSignatureField(ByVal graphics As PdfGraphics)

    ' Create a signature field
    Dim signature As New PdfGraphicsAcroFormSignatureField("signature", New RectangleF(0, 20, 120, 130))

    ' Specify a content image for the signature field.
    Dim image As Image = System.Drawing.Image.FromFile("..\..\Image.png")
    signature.ContentImage = image

    ' Add the field to the document.
    graphics.AddFormField(signature)
End Sub

Related GitHub Examples

The following code snippet (auto-collected from DevExpress Examples) contains a reference to the ContentImage property.

Note

The algorithm used to collect these code examples remains a work in progress. Accordingly, the links and snippets below may produce inaccurate results. If you encounter an issue with code examples below, please use the feedback form on this page to report the issue.

C#

pdf-document-api-add-signature-field-to-document/CS/AddSignatureField/Program.cs#L30

Image image = Image.FromFile("..\\..\\Image.png");
signature.ContentImage = image;

VB.NET

pdf-document-api-add-signature-field-to-document/VB/AddSignatureField/Program.vb#L26

Dim image As Image = Image.FromFile("..\..\Image.png")
signature.ContentImage = image
' Add the field to the document.