Asp.net mvc 3 未在url中传递值

如果我浏览到URL localhost/Ajax/FindRooms/SOMEBUILDING。SOMEBUILDING未传递给FindRooms方法的selectedBuilding参数。它总是空的？？我如何修复此问题，使其在POST和GET中都能工作？

正如TA先生所建议的，其他路径会影响此问题。路由的顺序很重要

我把默认的路线放在末尾，就像一个符咒一样

 //In Controller this is what I have 
 public class AjaxController : Controller
 {

    [AcceptVerbs(new string[]{"GET"})]
    public ActionResult FindRooms(string selectedBuilding)
    {
        return Json(new { Room = "x"}, JsonRequestBehavior.AllowGet);
    }

 }

 //In Global.asax.cs I have  
 routes.MapRoute
 (
     "AjaxRoute1",
     "Ajax/FindRooms/{selectedBuilding}",
     new { controller = "Ajax", action = "FindRooms", selectedBuilding = "" }
 );

---

你们还有其他的路线登记吗？注意路线注册的顺序，因为可以使用更通用的路线，而不是不太通用的路线。

        routes.MapRoute
        (
           "AjaxRoute1",
           "Ajax/FindRooms/{selectedBuilding}",
           new { controller = "Ajax", action = "FindRooms", selectedBuilding = "" }
        );

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

        );