Check if DLL is managed or not

[Siddhartha]

Actually, if you open a .NET Library / Application in a binary editor, you will see that the ASCI text "BSJB" is shortly followed by the version of the Framework that the DLL / EXE needs.

So, depending on the presence of this search attribute, you can not only identify whether the library / executible is a managed library, but also the version of the Framework it uses.

Note: This is actually a hack as there seems to be no API that will help you out with your requirement - but, it is reliable (so far) and you can enforce some strong checks that nobody fools your application (though, I doubt if anyone will want to do this).