The simplest example with MVC attribute routing doesn't work - asp.net-mvc

Question

I use VS2013 and created MVC application by wizard. I also deleted all extra files and have the following:
1) RouteConfig.cs
public static void RegisterRoutes(RouteCollection routes)
{
routes.IgnoreRoute("{resource}.axd/{*pathInfo}");
routes.MapMvcAttributeRoutes();
}
2) HomeController.cs
public class HomeController : Controller
{
[Route("Home/Index")]
public ActionResult Index()
{
return View();
}
}
3) Index.cshtml
#{
ViewBag.Title = "Home Page";
}
Home page
I've got the page with error:
HTTP 403.14 - Forbidden
But, if I add to URL in browser's address bar manually - Home/Index:
http://localhost:50600/Home/Index
The page appears.
What I'm doing wrong?

Answer 1

Remove the "Home" from the route as the controller name HomeController is already starting your route with "Home". If you want to change that "Home" prefix, you can add an attribute to the HomeController class to define that.
Also, the default route name for an action will match the action name, so in this case you could use [Route("")] and the url /Home/Index would work.

Answer 2

My guess is that when you try this url:
http://localhost:50600
It does not work because you have removed the default route from your routes config. I don't know if you removed it yourself, but RoutesConfig.cs file usually comes with the following default route:
routes.MapRoute(
name: "Default",
url: "{controller}/{action}/{id}",
defaults: new { controller = "Home", action = "Index", id = UrlParameter.Optional }
);
This code ensures that if the user does not provide the controller or the action the site will default to index action of the home controller (you ca see that under the defaults parameter). This would also explain why it works when you try this route:
http://localhost:50600/Home/Index.

Answer 3

I think I know what's your problem now. You're expecting the default url to show up your Index View in HomeController but you've not setup the default route. You can set the default route by adding the following lines in your RouteConfig.cs
config.Routes.MapRoute(
name: "Default",
routeTemplate: "{controller}/{action}",
defaults: new { controller = "Home", action = "Index" }
);
Alternatively, if you wish to use attribute routing only without mixing with route template, you can just add the default route as following:-
config.Routes.MapRoute(
name: "Index",
url: "",
defaults : new { controller = "Home", action = "Index" }
);