RouteTable.Routes.Add structure was able to use in asp.net webforms. but, the error is within webpages. only works with the folder structure of the routing and cshtml url? How can I use the following structure?

RouteTable.Routes.Add("cat", new Route("category/{catname}-{catid}", new PageRouteHandler("~/Default.cshtml")));

RouteTable.Routes.Add("search", new Route("search/{src}", new PageRouteHandler("~/Default.cshtml")));