Get PDF text with positions from PDF

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C#

itextsharp

I want to parse a PDF file , having check box,Radio buttons,Drop downs and text boxes .And I want to parse the PDF file to get each of these control's position and the values. I am using C# and itextsharp

Atleast if I can get the text blocks (Rectangles) with its position and text , that would be helpfull.

any suggestions/ideas will be helpful.
I am using itextsharp 4.1.6.0 .
I can not use itextsharp5.0 (parser functionality ).

What I did so far REF: http://simpledotnetsolutions.wordpress.com/2012/04/08/itextsharp-few-c-examples/



thanks in advance..