c#

Parsing PDF Files using IFilter (C#, .NET)
How to extract text from PDF files using Microsoft IFilter interface and Adobe PDF IFilter implementation. 
Parsing PDF Files using iTextSharp (C#, .NET)
How to extract text from PDF files using iTextSharp library. Sample Visual Studio 2010 project included (C#).
How to Convert PDF to Text in .NET (C#)
How to extract plain text from PDF file using PDFBox.NET library. Sample Visual Studio project download (C#).