In windows,how do we identify whether a file is 64 bit or 32 bit?

Question

In windows,how do we identify whether a file is 64 bit or 32 bit?

Answer 1

You can open it with Dependancy Walker, it displays a "64" sign on the icon if it is a 64 bit dll/exe:

Answer 2

Check out this link: http://support.microsoft.com/kb/827218

Answer 3

TrID is what you're looking for.

Answer 4

[serverfault.com]This might help, which points [stackoverflow.com] to this. Second link is probably of more use - the accepted answer looks to be a C# solution to your problem.