Magic Numbers File Type checking

[C# Programming]

Houdy,

I need a class that checks/validates file types.
Of course this is needed in cases where you can't trust the extension to supply that info.

I thought about Magic Numbers as an option - does anyone have an already built app - any ******** will doAlso if you have ideas on how to accomplish this task (like MIME etc) in a better way I am all http://www.barakasoft.com/script/Forums/Images/smiley_OMG.gif

Surprising to see so few samples and sources for Magic Numbers on google...

Thanks a bunchTzumer