未触发MVC操作方法

我有一个MVC5库存web应用程序,其中有一个项目列表和每个项目的交付按钮。

@foreach (var i in Model.Inventario)
{
    @using (Html.BeginForm("AggiungiAlloScarico", "Scarico"))
    {
        string Disabilitato = "";
        string Classe = "";
        // some method to define the buttons' styles

        <div class="pull-right">
            @Html.Hidden("Modello", i.Item.Modello)
            @Html.Hidden("returnUrl", Request.Url.PathAndQuery)
            <input type="submit" class="@(String.Format("{0}", Classe))" value="Consegna" @Disabilitato />
        </div>
    }
}

只要点击其中任何一个按钮 AggiungiAlloScarico 中的动作方法 Scarico 应触发控制器。此方法只是将所选项目添加到会话中的对象,然后将用户重定向到 Index

[HttpPost]
public RedirectToRouteResult AggiungiAlloScarico(string Modello, string returnUrl)
{
    InventoryItem item = itemRepository.Inventario.FirstOrDefault(i => i.Item.Modello == Modello).Item;

    if (item != null)
    {
        GetScarico().AddItem(item, 1);
    }

    return RedirectToAction("Index", new { returnUrl });
}

问题是这个动作方法根本没有被触发。我认为路由可能有问题,因为每次我按“Consegna”按钮时,都会被重定向到 localhost:port/Scarico/AggiungiAlloScarico page:该url构造对应于默认的路由映射(RoutConfig类中的最后一个方法),但是没有调用相关的操作。此外,我在方法上设置了一个断点,但它从未停止,所以我猜问题出在这里,但我真的看不到它。

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

    routes.MapRoute(
        null,
        "",
        new { controller = "magazzino", action = "inventario", manufacturer = (string)null, page = 1 }
    );

    routes.MapRoute(
        null,
        "Page{page}",
        new { controller = "magazzino", action = "inventario", manufacturer = (string)null },
        new { page = @"\d+" }
    );

    routes.MapRoute(
        null,
        "{manufacturer}",
        new { controller = "magazzino", action = "inventario", page = 1 }
    );

    routes.MapRoute(
        null,
        "{modello}",
        new { controller = "magazzino", action = "inventario", manufacturer = (string)null, page = 1 }
    );

    routes.MapRoute(
        null,
        "{manufacturer}/Page{page}",
        new { controller = "magazzino", action = "inventario" },
        new { page = @"\d+" }
    );

    routes.MapRoute(
        null,
        "{manufacturer}/{modello}",
        new { controller = "magazzino", action = "inventario", page = 1 }
    );

    routes.MapRoute(null, "{controller}/{action}");
}

编辑: 我把所有的路由都注释掉了,除了默认的路由,它是有效的。我的定制路线怎么了?

感谢您的帮助。

谢谢, 戴维德。