ByteScout PDF Suite – C# – Sign pdf and set security with pdf sdk

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ByteScout PDF Suite – C# – Sign pdf and set security with pdf sdk

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ByteScout-PDF-Suite-C-sharp-Sign-pdf-and-set-security-with-pdf-sdk.pdf

How to sign pdf and set security with pdf sdk in C# with ByteScout PDF Suite

Learn to sign pdf and set security with pdf sdk in C#

ByteScout simple and easy to understand tutorials are planned to describe the code for both C# beginners and advanced programmers. ByteScout PDF Suite is the set that includes 6 SDK products to work with PDF from generating rich PDF reports to extracting data from PDF documents and converting them to HTML. This bundle includes PDF (Generator) SDK, PDF Renderer SDK, PDF Extractor SDK, PDF to HTML SDK, PDF Viewer SDK and PDF Generator SDK for Javascript. It can sign pdf and set security with pdf sdk in C#.

Want to save time? You will save a lot of time on writing and testing code as you may just take the C# code from ByteScout PDF Suite for sign pdf and set security with pdf sdk below and use it in your application. Follow the instructions from scratch to work and copy the C# code. If you want to use these C# sample examples in one or many applications then they can be used easily.

All these programming tutorials along with source code samples and ByteScout free trial version are available for download from our website.

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Program.cs

      using System.Diagnostics;
using System.Drawing;
using Bytescout.PDF;
using Font = Bytescout.PDF.Font;
using SolidBrush = Bytescout.PDF.SolidBrush;
using StringFormat = Bytescout.PDF.StringFormat;

namespace Signing
{
    /// <summary>
    /// This example demonstrates how to digitally sign PDF document.
    /// </summary>
    class Program
    {
        static void Main()
        {
            // Create new document
            Document pdfDocument = new Document();
            pdfDocument.RegistrationName = "demo";
            pdfDocument.RegistrationKey = "demo";
            // Add page
            Page page = new Page(PaperFormat.A4);
            pdfDocument.Pages.Add(page);

            // Add sample page content
            SolidBrush brush = new SolidBrush();
            Font font = new Font("Arial", 16);
            RectangleF rect = new RectangleF(0, 50, page.Width, 100);
            StringFormat stringFormat = new StringFormat();
            stringFormat.HorizontalAlign = HorizontalAlign.Center;
            page.Canvas.DrawString("Signature Test", font, brush, rect, stringFormat);

            // Signing parameters
            string certficateFile = ".\\demo_certificate.pfx";
            string certficatePassword = "123";
            // Optional parameters
            string signingReason = "Approval";
            string contactName = "John Smith";
            string location = "Corporate HQ";
            
            // Invisible signature
            //pdfDocument.Sign(certficateFile, certficatePassword);
            
            // Visible signature
            RectangleF signatureRect = new RectangleF(400, 50, 150, 100);
            pdfDocument.Sign(certficateFile, certficatePassword, signatureRect, signingReason, contactName, location);

            // Save document to file
            pdfDocument.Save("result.pdf");

            // Cleanup 
            pdfDocument.Dispose();

            // Open result document in default associated application (for demo purpose)
            ProcessStartInfo processStartInfo = new ProcessStartInfo("result.pdf");
            processStartInfo.UseShellExecute = true;
            Process.Start(processStartInfo);
        }
    }
}