I've been learning PHP for a few years now, and have come to a point where I can code just about anything using it. Next year I'll be out of high school and into University, but there's a problem: most (not all) of the courses are only offered in ASP.NET.
So my question is: should I be enhancing my skills in C# alongside my PHP skills so that I can use ASP.NET (I don't want to learn VB, as I already have some C# background) as well? Or is it better to just keep pushing forward with my stronger PHP skills?
I'm quite confused at this point, and would appreciate any advice from other web devs out there.