Is there a command line command for verifying what version of .NET is installed

Question

I have set of scripts for doing scripted installs. You can use the scripts on any server 2008 machine. However, I need to check if .NET 3.5 has been installed (before the

Answer 1

This is working for me:

@echo off
SETLOCAL ENABLEEXTENSIONS

echo Verify .Net Framework Version

for /f "delims=" %%I in ('dir /B /A:D %windir%\Microsoft.NET\Framework') do (
    for /f "usebackq tokens=1,3 delims= " %%A in (`reg query "HKLM\SOFTWARE\Microsoft\NET Framework Setup\NDP\%%I" 2^>nul ^| findstr Install`) do (
        if %%A==Install (
            if %%B==0x1 (
                echo %%I
            )
        )
    )
)

echo Do you see version v4.5.2 or greater in the list?

pause

ENDLOCAL 

The 2^>nul redirects errors to vapor.

Answer 2

You mean a DOS command such as below will do the job displaying installed .NET frameworks:

wmic /namespace:\\root\cimv2 path win32_product where "name like '%%.NET%%'" get version

The following may then be displayed:

Version
4.0.30319

WMIC is quite useful once you master using it, much easier than coding WMI in scripts depending on what you want to achieve.

Answer 3

You can write yourself a little console app and use System.Environment.Version to find out the version. Scott Hanselman gives a blog post about it.

Or look in the registry for the installed versions. HKLM\Software\Microsoft\NETFramework Setup\NDP