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How do I know which version of the .NET Framework my program is running on?

Answer 1

+7 A:

Different options are:

Check the value of Environment.Version
typeof (int).Assembly.GetName ().Version: this will give you the running mscorlib.dll assembly version.
Use Process Explorer if you can't change the code. Then check which version of mscorlib is loaded and from where.

Gonzalo 2009-11-09 06:51:33

Note though that this will return which version of the *CLR* that the program is running on. I can't verify it right now, but that should mean that it reports 2.0 both for apps running on .NET framework 2 and 3.5. .NET framework 4 comes with a new CLR, so that can be confirmed by checking the CLR version in use.

Fredrik Mörk 2009-11-09 06:53:52

Is there a less invasive way of doing this? As in I do have sources, but I'll have to copy the entire tree down, and I'm roaming, not @ work so another solution would be helpful but I can try.

halivingston 2009-11-09 06:57:31

Yes, there is. Give me a minute to find the link.

Gonzalo 2009-11-09 07:00:56

Done. Added as 3rd option.

Gonzalo 2009-11-09 07:05:54

Thanks, that worked beautifuly!

halivingston 2009-11-09 07:25:50

+1 for giving several solutions to the problem.

Nestor 2009-11-10 07:05:24

Answer 2

+1 A:

typeof(int).Assembly.ImageRuntimeVersion will give you the version of the mscorlib assembly loaded in your process.

logicnp 2009-11-09 07:18:08

Answer 3

A:

This returns the .Net runtime version as a string:

System.Runtime.InteropServices.RuntimeEnvironment.GetSystemVersion()

You can also get the install directory as well:

System.Runtime.InteropServices.RuntimeEnvironment.GetRuntimeDirectory()

goto msdn

csharptest.net 2009-11-10 00:08:54

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How do I know which version of the .NET Framework my program is running on?

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