ByteScout PDF SDK – VB.NET – Set Passwords and Permissions for PDF

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ByteScout PDF SDK – VB.NET – Set Passwords and Permissions for PDF

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ByteScout-PDF-SDK-VB-NET-Set-Passwords-and-Permissions-for-PDF.pdf

How to set passwords and permissions for PDF in VB.NET and ByteScout PDF SDK

Write code in VB.NET to set passwords and permissions for PDF with this step-by-step tutorial

The code below will help you to implement an VB.NET app to set passwords and permissions for PDF. ByteScout PDF SDK is the library 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. It can be used to set passwords and permissions for PDF using VB.NET.

This rich sample source code in VB.NET for ByteScout PDF SDK includes the number of functions and options you should do calling the API to set passwords and permissions for PDF. Follow the instructions from the scratch to work and copy the VB.NET code. Enjoy writing a code with ready-to-use sample VB.NET codes.

Download free trial version of ByteScout PDF SDK from our website with this and other source code samples for VB.NET.

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Program.vb

      Imports Bytescout.PDF

''' <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

    Shared Sub Main()

        ' Create new document
        Dim 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 document in default PDF viewer app
        Process.Start("result.pdf")

    End Sub

End Class