How can I determine if a .NET assembly was built for x86 or x64?

Question

I\'ve got an arbitrary list of .NET assemblies.

I need to programmatically check if each DLL was built for x86 (as opposed to x64 or Any CPU). Is this possible?

Answer 1

A more advanced application for that you can find here: CodePlex - ApiChange

Examples:

C:\Downloads\ApiChange>ApiChange.exe -CorFlags c:\Windows\winhlp32.exe
File Name; Type; Size; Processor; IL Only; Signed
winhlp32.exe; Unmanaged; 296960; X86

C:\Downloads\ApiChange>ApiChange.exe -CorFlags c:\Windows\HelpPane.exe
File Name; Type; Size; Processor; IL Only; Signed
HelpPane.exe; Unmanaged; 733696; Amd64