How do I detect if my .net application is running in 64 bit mode

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Martijn Boven - 21 Aug 2006 14:26 GMT

Is there a function which returns is my application is in 64 bit mode?

-Martijn

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Greg Young - 21 Aug 2006 14:41 GMT

I would imagine that you could just take the size of a reference (if 4 bytes
= 32 if 8 bytes = 64) although there might be a method somewhere that
already does this.

Cheers,

Greg

> Is there a function which returns is my application is in 64 bit mode?
>
> -Martijn

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Nicholas Paldino [.NET/C# MVP] - 21 Aug 2006 15:05 GMT

You can just check the static Size property on the IntPtr class.

Hope this helps.

Signature

- Nicholas Paldino [.NET/C# MVP]
- mvp@spam.guard.caspershouse.com

>I would imagine that you could just take the size of a reference (if 4
>bytes = 32 if 8 bytes = 64) although there might be a method somewhere that
[quoted text clipped - 7 lines]
>>
>> -Martijn

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Martijn Boven - 21 Aug 2006 15:18 GMT

That's smart. Thanks for the answer.

Greetings,
Martijn

> You can just check the static Size property on the IntPtr class.
>
[quoted text clipped - 11 lines]
>>>
>>> -Martijn

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Martijn Boven - 21 Aug 2006 15:26 GMT

btw this code works fine:

public static bool Is64BitMode()
{
return System.Runtime.InteropServices.Marshal.SizeOf(typeof(IntPtr))
== 8;
}

> That's smart. Thanks for the answer.
>
[quoted text clipped - 16 lines]
>>>>
>>>> -Martijn

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How do I detect if my .net application is running in 64 bit mode

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