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Get started with .NET Framework 4.0+

Welcome to PDFTron. Currently, .NET Framework for the PDFTron SDK is only supported on Windows.

Windows C# .NET PDF library integration

This guide will help you run PDFTron samples and integrate a free trial of the PDFTron SDK into .NET Framework applications on Windows. Your free trial includes unlimited trial usage and support from solution engineers.


  • Visual Studio

    Make sure that the .NET Desktop Development workload is part of your installation.

    This guide will use Visual Studio 2017.

  • PDFTron's C# .NET PDF Library for Windows:

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linkInitial setup

Extract the folder from the .zip file.

This article uses PDFNET_BASE as the path into the PDFNetDotNet4 folder that you extracted.

PDFNET_BASE = path/to/extraction/folder/PDFNetDotNet4/

linkRun the samples

Navigate to the location of extracted contents. Find and enter the Samples folder (PDFNET_BASE/Samples). Here you can find sample code for a large number of features supported by the PDFTron SDK.

  1. Open Samples_20XX.sln in Visual Studio. Choose an appropriate version for your Visual Studio installation.
  2. Find the sample you want to run and set it as the Startup Project for the solution.
  3. Run the project.

linkIntegrate into your application

This is called the "PDFTron Hello World" application. It is easy to integrate the rest of PDFTron SDK if you are able to open, save and close a PDFDoc.

  1. Create a new .NET Framework console application project in Visual Studio for your preferred language. You can find them under the Visual C# or Visual Basic category.
  2. Navigate into your project's folder. By default, the path should be similar to: C:/Users/User_Name/source/repos/myApp

    Copy the Lib folder from PDFNET_BASE to your project folder (the folder which contains your .csproj or .vbproj file).

  3. Find the Solution Explorer to the right. Right-click on References and select the Add reference option. This opens a Reference Manager dialog.

    Click on Browse... at the bottom of the dialog. Navigate to the copied Lib folder and add PDFNetLoader.dll to the references.

    Also add the appropriate version of PDFNet.dll from the x86 folder as another reference (path/to/your/project/folder/Lib/PDFNet/x86/PDFNet.dll). This version will allow the application to run on both 32-bit and 64-bit OS.

  4. Select PDFNet.dll and set its Copy Local property to False.

  5. Right click on your project and select Properties. In the left pane, select the Build Events tab. Under Post-Build Events, add the following code snippet:

    xcopy $(ProjectDir)Lib\PDFNet $(TargetDir)PDFNet /S /I /Y

linkThe Code

Replace the contents of Program.cs or Module1.vb with:

'Default namespace
Imports System

'Majority of PDFTron SDK can be used with these namespaces
Imports pdftron
Imports pdftron.Common
Imports pdftron.SDF
Imports pdftron.PDF

Module Module1

    'Required for AnyCPU implementation.
    Dim pdfNetLoader As PDFNetLoader
    Sub New()
    pdfNetLoader = pdftron.PDFNetLoader.Instance()
    End Sub

    Sub Main()
        ' Initialize PDFNet before using any PDFTron related
        ' classes and methods (some exceptions can be found in API)

        ' Using PDFNet related classes and methods, 
        ' must catch or throw PDFNetException

            Using doc As PDFDoc = New PDFDoc

                ' An example of creating a new page and adding it to
                ' doc's sequence of pages
                Dim page As Page = doc.PageCreate()

                ' Save as a linearized file which is most popular 
                ' and effective format for quick PDF Viewing.
                doc.Save("linearized_output.pdf", SDFDoc.SaveOptions.e_linearized)
                Console.WriteLine("Done. Results saved in linearized_output.pdf")
            End Using

        Catch e As PDFNetException
        End Try
    End Sub

End Module

Build and run the project using the Start button in Visual Studio.

You should find the "linearized_output.pdf" in your project folder with a blank page.

linkNext step

GuidesAPI docsSamples


Setting a startup project
Find out how to set a startup project

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