Get Started - Load and Edit a PDF File

• Sep 01, 2025
• 3 minutes to read

This article describes how to get started with the non-visual PDF processing component for .NET and .NET Framework.

Create a .NET Application

Perform the following steps to get started with the non-visual PDF processing component:

1. Run Microsoft Visual Studio and create a new Console Application project.

2. Install the DevExpress.Document.Processor NuGet package.

3. Paste the code below in the Main method of the Program.cs file (Main procedure of the Module1.vb file for Visual Basic).

   • Program.cs
   • Program.vb

   using DevExpress.Pdf;
   using System.Diagnostics;
   
   using (PdfDocumentProcessor pdfProcessor = new PdfDocumentProcessor()) {
   
       // Load the source PDF document
       pdfProcessor.LoadDocument(@"C:\Test Documents\Document.pdf");
       int angle = 0;
   
       // Rotate each page in the document by 90 degrees more than the previous page
       foreach (PdfPage page in pdfProcessor.Document.Pages) {
           angle = (angle + 90) % 360;
           page.Rotate = angle;
       }
       // Save the rotated PDF document to the output path
       pdfProcessor.SaveDocument(@"C:\Test Documents\Document_Rotated.pdf");
   }
   Process.Start(new ProcessStartInfo(@"C:\Test Documents\Document_Rotated.pdf") { UseShellExecute = true });
   

4. Run the project. After executing the code above, the pages are rotated and the new document is saved to the specified location.

   

Create a .NET Framework Application

1. Run Microsoft Visual Studio and create a new Console Application (.NET Framework) project.

2. Install the DevExpress.Document.Processor NuGet package or add references to the following libraries (if you have the DevExpress Unified Component Installer installed on your machine):

   • DevExpress.Data.v25.1.dll
   • DevExpress.Docs.v25.1.dll
   • DevExpress.Drawing.v25.1.dll
   • DevExpress.Office.v25.1.Core.dll
   • DevExpress.Pdf.v25.1.Core.dll
   • DevExpress.Pdf.v25.1.Drawing.dll

3. Paste the code below in the Main method of the Program.cs file (Main procedure of the Module1.vb file for Visual Basic).

   View Example

   • Program.cs
   • Program.vb

   using DevExpress.Pdf;
   using System.Diagnostics;
   
   using (PdfDocumentProcessor pdfProcessor = new PdfDocumentProcessor())
   {
       // Load the source PDF document
       pdfProcessor.LoadDocument("..\\..\\docs\\TextRotate.pdf");
       int angle = 0;
   
       // Rotate each page in the document by 90 degrees more than the previous page
       foreach (PdfPage page in pdfProcessor.Document.Pages) {
           angle = (angle + 90) % 360;
           page.Rotate = angle;
       }
    }
       // Save the rotated PDF document to the output path
       pdfProcessor.SaveDocument("..\\..\\docs\\Rotated.pdf");
   }
   

4. Run the project. After executing the code above, the pages are rotated and the new document is saved to the specified location.