ASP.Net MVC @ Url.Action（）路由到错误的控制器

I'm newbie to MVC. I could integrate MVC 5.2 to my existing web forms Visual Studio 2012 Update 4 project. I created my first controller and all worked as expected. Even I was able to leverage the windows forms authentication from my existing project when accessing the MVC view. But when created my second controller it began messing up.I'm newbie to MVC. I could integrate MVC 5.2 to