ASP.NET MVC simplify routing - asp.net-mvc

Question

How can I simplify these routes?
config.Routes.MapHttpRoute(
name: "GetUsersRoute",
routeTemplate: "api/User",
defaults: new { controller = "User", action = "GetUsers" }
);
config.Routes.MapHttpRoute(
name: "GetUserRoute",
routeTemplate: "api/User/{id}",
defaults: new { controller = "User", action = "GetUser", id = RouteParameter.Optional }
);
config.Routes.MapHttpRoute(
name: "GetEmailAddressRoute",
routeTemplate: "api/User/GetEmailAddress/{id}",
defaults: new { controller = "User", action="GetEmailAddress", id = RouteParameter.Optional }
);
/*** Default ***/
config.Routes.MapHttpRoute(
name: "DefaultApi",
routeTemplate: "api/{controller}/{id}",
defaults: new { id = RouteParameter.Optional }
);
I needed to add the GetEmailAddressRoute because the controller didn't know which action to take for a path like api/User/5. However, since then former routes like api/User don't lead to the correct action.
Some action signatures from the controller:
public Object GetUsers() { };
public Object GetUser(int id) { };
public HttpResponseMessage GetEmailAddress (int id) { };
But now I'd need to add another route for the Post actions. Is there a simpler way?
Update: What helped me for posting new users was to remove the action from the first route. Now it is
config.Routes.MapHttpRoute(
name: "GetUsersRoute",
routeTemplate: "api/User",
defaults: new { controller = "User" }
);

Answer 1

You can take advantage of the new routing attribute feature coming with web api 2 :
[Route("api/User")]
public Object GetUsers() { };
[Route("api/User/{id}")]
public Object GetUser(int id) { };
[Route("api/User/GetEmailAddress/{id}")]
public HttpResponseMessage GetEmailAddress (int id) { };