PdfDigitalSignatureElement Class

public class PdfDigitalSignatureElement : PdfPageElement

Public Class PdfDigitalSignatureElement
	Inherits PdfPageElement

// The document is signed when it is saved:
// dispose of the certificates after the save.
using PdfDigitalCertificatesCollection certs =
    PdfDigitalCertificatesStore.GetCertificates(@"C:\certs\signer.pfx", "secret");

using PdfDocument document = new PdfDocument();
PdfPage page = document.AddPage();

SelectPdf.Universal.Drawing.RectangleF bounds =
    new SelectPdf.Universal.Drawing.RectangleF(60, 60, 240, 70);
PdfDigitalSignatureElement signature =
    new PdfDigitalSignatureElement(bounds, certs[0]);
signature.Reason = "I approve this document";
signature.Location = "Bucharest";
page.Add(signature);

document.Save("signed.pdf");

' The document is signed when it is saved:
' dispose of the certificates after the save.
Using certs As PdfDigitalCertificatesCollection =
        PdfDigitalCertificatesStore.GetCertificates("C:\certs\signer.pfx", "secret")
    Using document As New PdfDocument()
        Dim page As PdfPage = document.AddPage()

        Dim bounds As New SelectPdf.Universal.Drawing.RectangleF(60, 60, 240, 70)
        Dim signature As New PdfDigitalSignatureElement(bounds, certs(0))
        signature.Reason = "I approve this document"
        signature.Location = "Bucharest"
        page.Add(signature)

        document.Save("signed.pdf")
    End Using
End Using