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How To manipulate a PDF file

dark_avalon asked:

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Hi everyone, i wanna know how manipulate a pdf file with existing library for C#.net

how i can validate the follow propeties?
-need know the file is a PDF,
-gray scale on 8
-resolution 300 points per inch
-without OCR
-without blank pages.
if one condition is not met.
return a error.
Tags: C#, .NET

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