Subject: PdfImportedSignatureField Draw Signature
Date: 2013-06-26 19:02:13
From: Armando secret
Source: pdfimportedsignaturefield-draw-signature
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	Hello,

	I'm trying to sign an existing signature field in a PDF. I can successfully open the document and find the field. I then use the following PdfDigitalSignature contructor to create a signature for the field:

	[code lang='c#']public PdfDigitalSignature(PdfDocumentBase document, PdfPageBase page, PdfCertificate certificate, string signatureName, PdfImportedSignatureField loadedField)[/code]

	 

	If I then save the document, everything works, but the signature is empty since I have not drawn anything on it.

	 

	Now when I try to draw the signature using the Appereance property of the signature, I get a reference null exception. How can I draw a signature on an existing signature field?

	 

	Thank you

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