Best Way To Determine If .NET 3.5 Is Installed

Question

I need to programatically determine whether .NET 3.5 is installed. I thought it would be easy:

<% Response.Write(Environment.Version.ToString()); %>
         


        

Answer 1

Another interesting find is the presence of assemblies here:

C:\Program Files\Reference Assemblies\Microsoft\Framework\v3.5

You'd think Microsoft would build a check for "latest version" into the framework.