获取控制器ASP中的项目根路径。净MVC吗?

I am using dotlesscss for my css and I remember how to use that but what I am forgetting is how to get the root project path so that I can generate the full file path to my .less file to get for the less engine to parse. How do I get the project root path so that I can generate the path for my less files?I am using dotlesscss for my css and I remember