public void SignFile()
{
PdfSigner.SignFile(@"Resources\A4 Test Page.pdf", new PdfSignatureParameters("Digital Signature Test")
{
SignaturePageNumber = 1,
SignatureYLocation = 600,
SignatureHeight = 60,
SignatureTemplate = "Signed by {firstname} {lastname}\non {signdate}",
TargetFilePath = @"C:\temp\signed.pdf",
SignatureLeftMargin = 50,
SignatureRightMargin = 50
},
certificateSelector);
}