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Home » Newsletter » May 2011

By V. Subhash

In this article, we focus on how to split PDF documents. The PDFDocument of PDFOne .NET offers several methods to split PDF documents.

// Copy specified pages to a specified file
// Copy specified pages and automatically name the output file
public void Split( 
   string pageRange
)
 
// Split the document by specified number of pages
public void Split( 
   int pages
)

public void ExtractPagesTo( 
   string path,
   string pageRange
)

In this code example, I try to split a 6-page PDF document in several ways.

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using Gnostice.PDFOne;

namespace PDFOne_dotNET_Examples {
   class PDF_Merge {
      static void Main(string[] args) {
         PDFDocument doc = new PDFDocument("your-license-key");
            
         // Load a PDF document
         doc.Load(@"F:\My eBooks\airlinetrailbrochure.pdf");
            
         // Creates 2-4,6.pdf
         doc.Split("2-4,6");  

         // Creates 1-4.pdf and 5-6.pdf
         // doc.Split(4);

         // Creates even_page.pdf with pages 2, 4 and 6
         // doc.ExtractPagesTo("even_pages.pdf", "2,4,6");

         // Closes the PDF document
         doc.Close();
      }
   }
}

Here is the input document.

Here is the output of the first Split() method. The method uses the pagerange parameter to name the output file.

Here is the output of the second Split() method. The output files are name after their original first and last page numbers. Even though the last file has only 2 page, it will still be given the full benefit of the multiple!

The method ExtractPages simply names the output file with the name specified in the path parameter.