public class MyController : Controller
{
  private readonly IRepository _repository;
 
  public MyController()
  {
    _repository = new MsSqlRepository();
  }

  public ActionResult Index()
  {
    if (Request.IsAuthenticated)
    {
    }
    return View();
  }
}

public static void RegisterRoutes(RouteCollection routes)
{
  routes.IgnoreRoute("{resource}.axd/{*pathInfo}");

  routes.MapRoute(
  "AccountDefault", // Route name
  "Account/{action}", // URL with parameters
  new { controller = "Account" }
  );

  routes.MapRoute(
  "AjaxDefault", // Route name
  "Ajax/{action}/{id}", // URL with parameters
  new { controller = "Ajax", id = UrlParameter.Optional } // Parameter defaults
  );
 
  routes.MapRoute(
  "OrderDefault", // Route name
  "Order/{action}/{id}", // URL with parameters
  new { controller = "Order", action = "Index", id = UrlParameter.Optional }, // Parameter defaults
  new[] { "MySite.Mvc3.Controllers" }
  );
 
  routes.MapRoute(
  "Default", // Route name
  "{action}/{id}", // URL with parameters
  new { controller = "Home", action = "Index", id = UrlParameter.Optional } // Parameter defaults
  );

  routes.MapRoute(
  "MyDefault", // Route name
  "My/{action}/{id}", // URL with parameters
  new { controller = "My", action = "Index", id = UrlParameter.Optional }, // Parameter defaults
  new [] {"MySite.Mvc3.Controllers"} // без этой строки тоже не работает
  );

        public static void RegisterRoutes(RouteCollection routes)
        {
            routes.IgnoreRoute("{resource}.axd/{*pathInfo}");

            routes.MapRoute(
                "Common", // Route name
                "{controller}/{action}/{id}", // URL with parameters
                new { action = "Index", id = UrlParameter.Optional }, // Parameter defaults
                new[] {"GmTrade.Mvc3.Controllers"}
            );

            routes.MapRoute(
                "Default", // Route name
                "{action}/{id}", // URL with parameters
                new { controller = "Home", action = "Index", id = UrlParameter.Optional } // Parameter defaults
            );
        }