Determine framework (CLR) version of assembly

Question

From the command line (or by any means really), how can I determine which CLR version a .NET assembly requires?

I need to determine if an assembly requires 2.0 or 4

Answer 1

If you want to include result in a script, I recommend using the text output of ildasm.exe, and then grep "Version String" from the output.

"C:\Program Files (x86)\Microsoft SDKs\Windows\v8.1A\bin\NETFX 4.5.1 Tools\ildasm.exe" /text D:\LocalAssemblies\Toolfactory.Core.BaseTypes.dll /noil /headers | find "' Version String"

Note I include a ' so the find command does not recognize "Version String Length"