URL routing in ASP.NET MVC

In ASP.NET MVC, the routing is very easy. By examine the URL, its automatically find the controller and then actions.

But, to select a single controller for all kinds of URL, followings can help

           routes.MapRoute(
                "Single",
                "{page}",
                new { controller = "Single", action = "Single" }
            );
            routes.MapRoute(
                "SingleChild",
                "{page}/{child}/{*ignore}",
                new { controller = "Single", action = "Child" }
            );
            routes.MapRoute(
                null,
                "",
                defaults: new { controller = "Single", action = "Home" }
            );