How to learn the exact version of the .NET platform?

Question

The code:

Console.WriteLine(Environment.Version);

returns identical results (2.0.50727.5448) for .NET Framework 2.0, 3.0, and 3.5 SP1. How do I learn the exact version of the installed .NET platform?

Similar: http://stackoverflow.com/questions/1565434/howto-find-net-version — Hansi, Apr 20 '12 at 15:44
http://stackoverflow.com/questions/951856/is-there-an-easy-way-to-check-net-framework-verison-using-c — Min Min, Apr 20 '12 at 15:45
Yes, all those versions of the framework use the same runtime version. — Oded, Apr 20 '12 at 15:49

score 4 · Answer 1 · edited Apr 20 '12 at 15:56

4

System.Runtime.InteropServices.RuntimeEnvironment.GetSystemVersion()

edited Apr 20 '12 at 15:56

Bali C

answered Apr 20 '12 at 15:43

Dave Bish

2

no, it is the wrong response. In this case I receive it (for all): v2.0.50727 – Andrey Bushman Apr 20 '12 at 15:46
@Bush: are you sure your code doesn't actually run on 2.0.50727? You can check this by examining the loaded dlls at runtime. – Vlad Apr 20 '12 at 15:47
@Vlad: In the MS Visual Studio project I change a target platform for 2.0, 3.0, 3.5 SP1 and I receive the same value for both specified above code options. – Andrey Bushman Apr 20 '12 at 15:50

Sergey Kalinichenko · Accepted Answer · 2019-02-01T01:06:38.293

4

You need to read registry keys to detect versions at service pack granularity. This article explains what key/value pairs you need to look for.

For example, you can tell 3.5 from 3.5 SP1 by looking at values inside

HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\NET Framework Setup\NDP\v3.5

"plain" 3.5 has Install = 1, while SP1 has SP >=1.

Scroll to the bottom of the article at the link to see the entire table.

edited Feb 01 '19 at 01:06

answered Apr 20 '12 at 15:47

I need to specify only the current platform, instead of all what are available on the computer – Andrey Bushman Apr 20 '12 at 15:52
How the register can help to learn to me information on that platform on which the code is now executed? – Andrey Bushman Apr 20 '12 at 15:54
@EvgenyGorb Done. Thanks for the comment! – Sergey Kalinichenko Feb 01 '19 at 01:06

score 4 · Answer 3 · edited May 23 '17 at 10:34

2.0, 3,0, 3,5 and 3.5SPx all based on the same set of core 2.0 libraries. Essentially all of these versions are 2.0 plus additional components. This answer contains the list of versions: How do the .NET Framework, CLR and Visual Studio version numbers relate to each other? and related information.

So when you ask what run-time environment version is you'll get 2.0 (the other variants are 1, 1.1 and 4.0 as far as I know).

If you need 3/3.5/SP distinction @dasblinkenlight gave you an answer. Otherwise explain what you trying to do to get more suggestions.

3 Answers3