Would I be able to compile the osu! source?

Would it be possible for me to compile the osu source into a functioning private server and edit it like nosue?

I know a few languages but C# is not one of them. It looks pretty useful so I'd want to learn it. Not just because the osu! source is written in C# but a lot of things I've used also are.

no, you're better off making your own private server with the client source instead of trying to setup bancho and the website