asp.net mvc3 路由有关问题求解

   public static void RegisterRoutes(RouteCollection routes)        {            routes.IgnoreRoute("{resource}.axd/{*pathInfo}");            routes.MapRoute(                "Default", // 路由名称                "{controller}/{action}/{id}", // 带有参数的 URL                new { controller = "Home", action = "Index", id = UrlParameter.Optional } // 参数默认值            );            routes.MapRoute(             "Paging", // 路由名称             "{controller}/{action}/{Tid}/{page}", // 带有参数的 URL             new { controller = "Home", action = "List", Tid = UrlParameter.Optional, page = UrlParameter.Optional } // 参数默认值                   );              }

    public class HomeController : Controller    {        public ActionResult Index()        {            ViewBag.Message = "欢迎使用 ASP.NET MVC!";            return View();        }        public ActionResult About()        {            return View();        }        public ActionResult List(string Tid,string page)        {            string s = string.Format("Tid:{0},page:{1}",Tid,page);            return View(s);        }    }

@{    ViewBag.Title = "List";}<h2>List</h2>