How To Get the latest Installed Version of .NET and What Happens If...

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I'm trying to get the latest installed version of .NET on a given machine. I've tried a couple of different ways, but it keeps coming back with 2.0, which is curious since I'm running a WPF app on a machine that I *KNOW* has 3.5 SP1 on it.

How should I go about properly retrieving the .NET version?

What happens if a .NET app is run on a system that doesn't have the appropriate version of .NET?

Posted 1-Jul-09 4:26am

#realJSOP

Updated 19-Mar-10 2:44am

Deeksha Shenoy

v5

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DaveyM69 · Answer 1 · 2009-07-01T04:38:00

Solution 1

This registry key seems to have all the information required - on this system anyway.
HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\NET Framework Setup\NDP

Posted 1-Jul-09 4:38am

DaveyM69

Updated 19-Mar-10 2:44am

v2

Pete O'Hanlon · Answer 2 · 2010-03-19T02:49:00

Solution 2

Nish has written a really neat utility that you could use (available here[^]. It's unmanaged code because it detects if there's no .NET framework installed. If you want a managed code implementation, Scott Dorman has written one here[^].

Posted 19-Mar-10 2:49am

Pete O'Hanlon