Any information / help on connecting VS with the Unity project?

I hear that it is possible to import and edit the Unity solution in VS but I can’t find any information on how this is done. Can anyone help? I noticed that the output build solution from unity references the CSharp-Assembly project but it’s in the wrong framework to link in the solution.

I figured it out, I was being a noob! It’s all there waiting for me to hook up events to!

DanielSan, so how to do it? it is my first time developing a game, and on Windows Phone 8.1, so, I want to learn more! :smile: