C＃是否有任何基于Web，独立（无安装）或无管理的安装程序编译器

I'm looking to spend a bit of my lunch break each day teaching myself some C#. I have access to some books on the subject via my employer-paid Books24x7 subscription, but I have no way of running code while I'm at work.I'm looking to spend a bit of my lunch break ea