Suppress/hide the dialog box at time of adding digital signature to a word document

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C#

Office

signature

I am trying to add signature line to a word document. I want to do it using code, when I run my code I see below dialog. How do I hide this dialog ?

http://i.stack.imgur.com/3seVf.jpg[^]


This is the code I am using.

SignatureSet signatureSet = doc.Signatures;
object sigID = Guid.NewGuid();
signatureSet.ShowSignaturesPane = false;
// This line opens that dialog.
Signature signature = wordApp.ActiveDocument.Signatures.AddSignatureLine(sigID);

//Signature signature = signatureSet.AddSignatureLine(sigID);
signature.Setup.SuggestedSigner = "docSigner";
signature.Setup.SuggestedSignerEmail = "abc@xyz.com";
signature.Setup.ShowSignDate = true;

signature.Sign();

Thanks in advance.