ByteScout PDF Suite – C# – Add passwords and permissions in pdf with pdf sdk

Home
/
Articles
/
ByteScout PDF Suite – C# – Add passwords and permissions in pdf with pdf sdk

printable version:
ByteScout-PDF-Suite-C-sharp-Add-passwords-and-permissions-in-pdf-with-pdf-sdk.pdf

How to add passwords and permissions in pdf with pdf sdk in C# and ByteScout PDF Suite

This code in C# shows how to add passwords and permissions in pdf with pdf sdk with this how to tutorial

Quickly learn how to add passwords and permissions in pdf with pdf sdk in C# with this sample source code. 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 add passwords and permissions in pdf with pdf sdk in C#.

This prolific sample source code in C# for ByteScout PDF Suite contains various functions and other necessary options you should do calling the API to add passwords and permissions in pdf with pdf sdk. This C# sample code is all you need for your app. Just copy and paste the code, add references (if needs to) and you are all set! Applying C# application mostly includes various stages of the software development so even if the functionality works please test it with your data and the production environment.

If you want to try other source code samples then the free trial version of ByteScout PDF Suite is available for download from our website. Just try other source code samples for C#.

On-demand (REST Web API) version:
Web API (on-demand version)

On-premise offline SDK for Windows:
60 Day Free Trial (on-premise)

Program.cs

      using System.Diagnostics;
using Bytescout.PDF;

namespace PasswordsAndPermissions
{
    /// <summary>
    /// This example demonstrates how to lock the document with a password. 
    /// PDF format supports two kinds of passwords: owner and user password.
    /// User password allows to view document and perform allowed actions.
    /// Owner password allows everything, including changing passwords and permissions.
    /// </summary>
    class Program
    {
        static void Main()
        {
            // Create new document
            Document pdfDocument = new Document();
            pdfDocument.RegistrationName = "demo";
            pdfDocument.RegistrationKey = "demo";
            // Add page
            pdfDocument.Pages.Add(new Page(PaperFormat.A4));


            // Set document encryption algorythm
            pdfDocument.Security.EncryptionAlgorithm = EncryptionAlgorithm.RC4_40bit;
            // Set various user permissions
            pdfDocument.Security.AllowPrintDocument = false;
            pdfDocument.Security.AllowContentExtraction = false;
            pdfDocument.Security.AllowModifyAnnotations = false;
            pdfDocument.Security.PrintQuality = PrintQuality.LowResolution;
            
            // Set owner password
            pdfDocument.Security.OwnerPassword = "ownerpassword";
            
            // Set user password
            pdfDocument.Security.UserPassword = "userpassword";
            
            
            // 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);
        }
    }
}