1. Get location of the version of .NET and type of platform (e.g. 64 bit). A typical example, might be: C:\Windows\Microsoft.NET\Framework\v4.0.30319.
In your C# application code, the following will return the location:
System.Runtime.InteropServices.RuntimeEnvironment.GetRuntimeDirectory()
原文：http://www.cnblogs.com/weihongji/p/4307515.html