SelectPdf for .NET - Pdf Split - C# / ASP.NET Sample This sample shows how to use SelectPdf Library for .NET to split a pdf document into several pdf documents or extract only certain pages from the original document and create a new pdf document only with them. Here is our initial test pdf document: Test file Click on the "Create PDF" button below to see the result. This sample will create a new pdf document containing only pages 2 and 3 from the original pdf document.