Question

I have a PDF file that I need to read with ITextSharp (version 5.1.1). I need to iterate through the signature fields and verify whether the signature field has been signed or not.

I can already iterate through the signature fields, but I cannot figure out how to check if the signature field has been signed. I do not want to verify the signature field as I am only interested in whether the field is signed or not, not its validity.

Can someone please point me in the right direction here?

Is there a property I can check for Siganturefields?

TIA

Answer 1

You can call AcroFields.GetBlankSignatureNames().

With a PdfReader:

List<string> blanks = reader.AcroFields.GetBlankSignatureNames();