How to inspect the values inside the route in ASP.Net MVC C#

public ActionResult Index()

{

    var Controller = RouteData.Values["controller"];

    var Action = RouteData.Values["action"];

    var Id = RouteData.Values["id"];

    string Output = string.Format("Controller = {0}, Action= {1}, Id= {2}",

               Controller, Action, Id);

    ViewBag.Message = Output;

    return View();
}