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Graphics //Creates a certificate instance from PFX file with private key Stream certificateStream = typeof ( MainPage ). Add () //Create PDF graphics for the page PdfGraphics graphics = page.

Creates a new PDF document PdfDocument document = new PdfDocument () //Adds a new page PdfPageBase page = document. DrawImage ( signatureImage, 0, 0 ) //Saves and closes the document document.

Reason = "I am author of this document." //Draws the signature image graphics. LocationInfo = "Honolulu, Hawaii" signature. Bounds = new RectangleF ( new PointF ( 0, 0 ), signatureImage. Graphics //Creates a certificate instance from PFX file with private key PdfCertificate pdfCert = new PdfCertificate (, "password123" ) //Creates a digital signature PdfSignature signature = new PdfSignature ( document, page, pdfCert, "Signature" ) //Sets an image for signature field PdfBitmap signatureImage = new PdfBitmap ( ) //Sets signature information signature.