Find out process bitness programmatically

Question

Is there anyway I can find out if my .NET process is running as 32bit process or 64bit process?

Ok, 2565 more points to go, before I can mark that as a duplicate! — Patrick D'Souza, Apr 16 '13 at 16:09

score 5 · Answer 1 · answered Apr 16 '13 at 16:09

5

You probably want Environment.Is64BitProcess if you're using .NET 4.0 or later. Otherwise, check IntPtr.Size, as suggested in the other answers.

answered Apr 16 '13 at 16:09

Jim Mischel

Thanks for pointing to new API, this should be a preferable way – illegal-immigrant Apr 16 '13 at 16:10
+1 Indeed a much better way than using IntPtr – Amit Rai Sharma Apr 16 '13 at 16:13
+1 - This looks better. Nice!!! – Patrick D'Souza Apr 16 '13 at 16:14

score 3 · Answer 2 · edited May 23 '17 at 11:43

3

if (IntPtr.Size == 4)
    // 32-bit

else if (IntPtr.Size == 8)
    // 64-bit

However, as pointed by @Jim Mischel, on .NET 4 and above, you should use

edited May 23 '17 at 11:43

Community

answered Apr 16 '13 at 16:07

illegal-immigrant

score 1 · Answer 3 · answered Apr 16 '13 at 16:07

1

Use IntPtr.Size property to find out process bitness.

if(IntPtr.Size == 4)
 // 32 bit process
else
 // 64bit process

answered Apr 16 '13 at 16:07

3 Answers3