ASP.NET MVC路由中未传递的参数值

Question

我正在学习如何在ASP.NET MVC中创建自定义路由并且遇到了障碍.在我的Global.asax.cs文件中,我添加了以下内容:

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

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

    // My Custom Route.
    routes.MapRoute(
        "User_Filter",
        "home/filter/{name}",
        new { controller = "Home", action = "Filter", name = String.Empty }
    );
}

我的想法是能够导航到http://localhost:123/home/filter/mynameparam.这是我的控制器:

public class HomeController : Controller
{
    public ActionResult Index()
    {
        return View();
    }

    public ActionResult Filter(string name)
    {
        return this.Content(String.Format("You found me {0}", name));
    }
}

当我导航到http://localhost:123/home/filter/mynameparam控制器方法Filter被调用时,但参数name始终是null.

有人可以给出一个指针,指出我构建自定义路由的正确方法,以便将url中的名称部分传递给name参数for Filter().

Answer 1

该Default路线应该是最后一个.试试这种方式:

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

    // My Custom Route.
    routes.MapRoute(
        "User_Filter",
        "home/filter/{name}",
        new { controller = "Home", action = "Filter", name = String.Empty }
    );

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