How do I tell what bitness my code is running in?

[David Thielen]

I want to tell if we are running in 32-bit or 64-bit mode.

thanks - dave

david@at-at-at@windward.dot.dot.net
Windward Reports -- http://www.WindwardReports.com
me -- http://dave.thielen.com

Cubicle Wars - http://www.windwardreports.com/film.htm

[Jialiang Ge [MSFT]]

Hello Dave

In .NET, you can check IntPtr.Size == 8 to tell whether the process is
running in 32bit mode or 64bit mode.

It is also frequently asked how to programmatically know the OS bitness of
the running machine in C#. I summarized the solution in the All-In-One Code
Framework (http://cfx.codeplex.com) sample CSCheckOSBitness:
http://cfx.codeplex.com/SourceControl/changeset/view/39074#842775

Regards,
Jialiang Ge
Microsoft Online Community Support

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