Url.Action("A", "B", new { C="Lastday",D=20120301,E=10 })%>
如果顺路由顺序不变，则生成的是/Lastday/20120301/10.html。但是换了位置后，就生成参数式了，不懂自动匹配路由生成URL了。

        public static void RegisterRoutes(RouteCollection routes)

        {

            routes.IgnoreRoute("{resource}.axd/{*pathInfo}");



            routes.MapRoute(

                name: "Type",

                url: "{C}/{D}/{E}.html",

                defaults: new { controller = "A", action = "B", C= @"[a-zA-Z0-9_]+", D= @"\d{8}", E= @"\d +" }

            );



            routes.MapRoute(

                name: "Default",

                url: "{controller}/{action}",

                defaults: new { controller = "A", action = "A" }

                );

        }