How to detect Windows 64 bit platform with .net?

Posted by Marc on Stack Overflow See other posts from Stack Overflow or by Marc
Published on 2008-12-03T09:32:38Z Indexed on 2010/04/22 13:43 UTC
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Filed under:

Windows

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.NET

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c#

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64bit

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platform

In a .net 2.0 C# application I use the following code to detect the operating system platform:

string os_platform = System.Environment.OSVersion.Platform.ToString();<br/>

This returns "Win32NT". The problem is that it returns "Win32NT" even when running on Windows Vista 64bit.
Is there any other method to know the correct platform (32 or 64bit)?

Note that it should also detect 64bit when run as 32bit app on Windows 64bit.

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