Can't signing a signature field

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   HiI am trying to sign document using PFX file.
in the document I already have a signature filed name "Sig" -  code snip:

int signProcessID = debenu.NewSignProcessFromFile(fileName, "");
int res = debenu.SelectPage(1);          
res = debenu.SetSignProcessField(signProcessID, "Sig");          
res = debenu.SetSignProcessFieldImageFromFile(signProcessID,  Path.Combine(Directory.GetCurrentDirectory(), $"SigImage.jpg"), 0);
res = debenu.SetNeedAppearances(0);
res = debenu.SetSignProcessSubFilter(signProcessID, 3);         
res = debenu.SetSignProcessInfo(signProcessID, "To test digital signatures", "The World", "Contact me");
res = debenu.SetSignProcessPFXFromFile(signProcessID, GetPFXFileName(), "123456");
res = debenu.EndSignProcessToFile(signProcessID, Path.Combine(Directory.GetCurrentDirectory(), $"{Guid.NewGuid().ToString().Substring(0, 5)}.pdf"));
res = debenu.GetSignProcessResult(signProcessID);
res = debenu.ReleaseSignProcess(signProcessID);

I  getting code 13 from GetSignProcessResult 

Please Advice 

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Adia Members Profile Find Members Posts Beginner Joined: 16 Feb 21 Location: Israel Status: Offline Points: 5	Post Options Post Reply Quote Adia Report Post Thanks(0) Quote Reply Topic: Can't signing a signature field Posted: 16 Feb 21 at 9:20AM
	Hi I am trying to sign document using PFX file. in the document I already have a signature filed name "Sig" - code snip: int signProcessID = debenu.NewSignProcessFromFile(fileName, ""); int res = debenu.SelectPage(1); res = debenu.SetSignProcessField(signProcessID, "Sig"); res = debenu.SetSignProcessFieldImageFromFile(signProcessID, Path.Combine(Directory.GetCurrentDirectory(), $"SigImage.jpg"), 0); res = debenu.SetNeedAppearances(0); res = debenu.SetSignProcessSubFilter(signProcessID, 3); res = debenu.SetSignProcessInfo(signProcessID, "To test digital signatures", "The World", "Contact me"); res = debenu.SetSignProcessPFXFromFile(signProcessID, GetPFXFileName(), "123456"); res = debenu.EndSignProcessToFile(signProcessID, Path.Combine(Directory.GetCurrentDirectory(), $"{Guid.NewGuid().ToString().Substring(0, 5)}.pdf")); res = debenu.GetSignProcessResult(signProcessID); res = debenu.ReleaseSignProcess(signProcessID); I getting code 13 from GetSignProcessResult Please Advice

tfrost Members Profile Find Members Posts Senior Member Joined: 06 Sep 10 Location: UK Status: Offline Points: 437	Post Options Post Reply Quote tfrost Report Post Thanks(0) Quote Reply Posted: 16 Feb 21 at 10:27AM
	First, I suggest not discarding all the res values; check each one. And also I would recommend moving your SetNeedAppearances to precede the NewSignProcess call.

Adia Members Profile Find Members Posts Beginner Joined: 16 Feb 21 Location: Israel Status: Offline Points: 5	Post Options Post Reply Quote Adia Report Post Thanks(0) Quote Reply Posted: 16 Feb 21 at 10:42AM
	Thanks for your replay. I Am checking the res value in debug. SetNeedAppearances, SetSignProcessFieldall, SetSignProcessFieldImageFromFile,SetSignProcessSubFilter, SetSignProcessInfo,SetSignProcessPFXFromFile return 1. EndSignProcessToFile return 0. GetSignProcessResult return 13. I moved the SetNeedAppearances precede to the NewSignProcessFromFile call but I getting the same result - 13.

Ingo Members Profile Find Members Posts Moderator Group Joined: 29 Oct 05 Status: Offline Points: 3524	Post Options Post Reply Quote Ingo Report Post Thanks(0) Quote Reply Posted: 16 Feb 21 at 10:27PM
	Regarding SetNeedApp... you can read this in the documentation: "... Most PDF viewers will create the appearance stream for all form fields when the document is opened ..." This isn't correct behavior if you want to sign a document. It should be firmed and unchanged. So try SetNeeApp... with 0 or -1 and it should work as expected. Cheers and welcome here, Ingo Edited by Ingo - 16 Feb 21 at 10:28PM
	Cheers, Ingo