ByteScout PDF SDK – C# – Add Passwords And Permissions in PDF

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ByteScout PDF SDK – C# – Add Passwords And Permissions in PDF

printable version:
ByteScout-PDF-SDK-C-sharp-Add-Passwords-And-Permissions-in-PDF.pdf

How to add passwords and permissions in PDF in C# and ByteScout PDF SDK

The tutorial shows how to add passwords and permissions in PDF in C#

These source code samples are listed and grouped by their programming language and functions they use. Want to add passwords and permissions in PDF in your C# app? ByteScout PDF SDK is designed for it. ByteScout PDF SDK is the SDK for pdf documents generation, modification and updates. Can also generate and fill PDF forms. Provides support for text (fonts, style, size, font family), layers, pdf form fields, vector and raster drawings.

C# code samples for C# developers help to speed up coding of your application when using ByteScout 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! Detailed tutorials and documentation are available along with installed ByteScout PDF SDK if you’d like to dive deeper into the topic and the details of the API.

Trial version of ByteScout PDF SDK is available for free. Source code samples are included to help you with your C# app.

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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);
        }
    }
}