How to add multiple digital signature ?

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How to add multiple digital signature:

It is possible to add multiple digital signature in the Pdf document, for this you need to set document permissions in the PdfSignature class using PdfCertificateFlags enumeration while creating the first signature. Below is the code snippet.

C#:

 
  PdfSignature signature = new PdfSignature(page, pdfCert, "Signature");
  PdfBitmap bmp = new PdfBitmap(@"..\..\Data\syncfusion_logo.gif");
 
  signature.Bounds = new RectangleF(new PointF(5, 5), bmp.PhysicalDimension);
  signature.ContactInfo = "johndoe@owned.us";
  signature.LocationInfo = "Honolulu, Hawaii";
  signature.Reason = "I am author of this document";
 
   signature.DocumentPermissions = PdfCertificationFlags.AllowComments |         PdfCertificationFlags.AllowFormFill | PdfCertificationFlags.ForbidChanges;

Sample Link:

https://www.syncfusion.com/downloads/support/directtrac/133647/ze/MultipleSignature820061917

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