Question

A few times in the last couple months I had the same task of verifying the file format by it’s header: JPEG, PDF, Word, and other popular files.

I wonder if there is a library availble for C#/.Net to do that?
Or is it a time to start a small project for NuGet catalogue?

Answer 1

For those who will find this question in the future: I have started to write the library. Once I have significant amount of different types, I’ll submit it to NuGet. But at the moment the source code is available here: http://filetypedetective.codeplex.com/

The idea of the library is to be able to call isPdf() or isZip() on FileInfo objects:

FileInfo file = new FileInfo("C:\Hello.pdf");
if ( file.isPdf())
    Console.WriteLine("File is PDF");

etc.

Update: the finally got around to create nuget package:

Install-Package FileTypeDetective