Define for Os version in C#

Question

I have a problem, I cannot find a way to detect windows version at compilation time.

My purpose is to create an executable that depend on Interface, which are defined on

Answer 1

Do you want to trigger compilation of some source code from the running application? I could imagine this is possible. In that case, you should be able to find OS version in Environment.OSVersion

But better approach would be :

.. include code for all versions and determine which code to call at runtime ..

as proposed by CodeCaster in comments.