The Tao of Open GL in C#

Open GL'ing in C# can be done using the Tao Framework. It is recommended by game programmer Daniel Schuller in his book on C# Game Programming. An interesting alternative to Tao is OpenTK which is also a wrapper for OpenCL (Open Computing Language - created as a response to GPGPU) and OpenAL (a 3D audio library that complements OpenGL) - the three basic objects of which are Listener, Source and Buffer.

If you know C# and want to absorb only OpenGL knowledge, try the OpenGL Programming Guide (already in its Eight Edition) by Dave Shreiner et al.