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.NET Framework 4.5.2+

PdfSignature.ContactInfo Property

Specifies the contact information which helps a recipient to verify the signature provided by the signer.

Namespace: DevExpress.Pdf

Assembly: DevExpress.Pdf.v22.2.Core.dll

NuGet Package: DevExpress.Pdf.Core

Declaration

public string ContactInfo { get; set; }

Property Value

Type Description
String

A String object that is the contact information provided by the signer to a recipient.

Remarks

Use the ContactInfo property to provide a recipient with information (e.g., a telephone number) which helps him/ her to contact with a signer who created the signature.

Example

This example illustrates how to add a visual signature to a PDF document.

To accomplish this task, do the following:

  • Create a PDF Document API component represented by an instance of the PdfDocumentProcessor class.
  • Load a document from a file using the PdfDocumentProcessor.LoadDocument method.
  • Create a certificate using a certificate file name and a password to access the certificate.
  • Create a document visual signature using one of the PdfSignature constructor overloads that takes 4 arguments. For example, using a certificate, image data represented by a byte array, and specifying the page number and signature bounds. The signature bounds are represented by a PdfOrientedRectangle object. You can specify the rotation angle for the signature (in radians) when creating a PdfOrientedRectangle object.
  • Specify signing location, contact info and reason using the PdfSignature.Location, PdfSignature.ContactInfo and PdfSignature.Reason properties, respectively.
  • Save the signed document with signing information by calling the PdfDocumentProcessor.SaveDocument method.
using DevExpress.Pdf;
using System;
using System.IO;
using System.Security.Cryptography.X509Certificates;

namespace PDFSignature {
    class Program {
        static void Main(string[] args) {

            // Create a PDF document processor.
            using (PdfDocumentProcessor documentProcessor = new PdfDocumentProcessor()) {

                // Load a PDF document. 
                documentProcessor.LoadDocument(@"..\..\Demo.pdf");

                // Create a visual signature using certificate, image data, and specifying  page number, signature bounds and rotation angle. 
                X509Certificate2 certificate = new X509Certificate2(@"..\..\SignDemo.pfx", "dxdemo");
                byte[] imageData = File.ReadAllBytes("..\\..\\Signature.png");
                int pageNumber = 1;
                int angleInDegrees = 45; 
                double angleInRadians = angleInDegrees * (Math.PI / 180);
                PdfOrientedRectangle signatureBounds = new PdfOrientedRectangle(new PdfPoint(620, 210), 250, 90, angleInRadians);
                PdfSignature signature = new PdfSignature(certificate, imageData, pageNumber, signatureBounds);

                // Specify signing location, contact info and reason.
                signature.Location = "USA";
                signature.ContactInfo = "john.smith@example.com";
                signature.Reason = "Approved";

                // Save the signed document.
                documentProcessor.SaveDocument(@"..\..\SignedDocument.pdf", new PdfSaveOptions() { Signature = signature });
            }
        }
    }
}

The following code snippet (auto-collected from DevExpress Examples) contains a reference to the ContactInfo property.

Note

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See Also