Asp.net mvc 当您将Index指定为操作时，@Url.Action为什么不输出Index？

当您将Index指定为操作时，@Url.Action为什么不输出Index

我试图使用razor@URL.Action（“Index”，“Admin”）输出一个URL，但是输出是错误的。结果是路由认为/Admin是一个类别，并被错误的路由捕获

我使用的路线是

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


        routes.MapRoute(
            null,
            "Page{page}",
            new { Controller = "Photo", action="List" , category = (string)null },
            new { page = @"\d+" }
        );


        routes.MapRoute(
            null,
            "{category}",
            new { Controller = "Photo", action = "List", page=1 }
        );


        routes.MapRoute(
            null,
            "{category}/Page{page}",
            new { Controller = "Photo", action = "List"},
            new { page = @"\d+" }
        );


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

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

---

我通过添加两条新路线解决了这个问题

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


        routes.MapRoute(
            "AdminIndex",                                           // Route name
            "Admin",                            // URL with parameters
            new { controller = "Admin", action = "Index" }  // Parameter defaults
        );
        routes.MapRoute(
            "Admin",                                           // Route name
            "Admin/Page{page}",                            // URL with parameters
            new { controller = "Admin", action = "Index" }  // Parameter defaults
        );


        routes.MapRoute(
            null,
            "Page{page}",
            new { Controller = "Photo", action="List" , category = (string)null },
            new { page = @"\d+" }
        );

        routes.MapRoute(
            null,
            "{category}",
            new { Controller = "Photo", action = "List", page=1 }
        );


        routes.MapRoute(
            null,
            "{category}/Page{page}",
            new { Controller = "Photo", action = "List"},
            new { page = @"\d+" }
        );


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

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

---

我通过添加两条新路线解决了这个问题

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


        routes.MapRoute(
            "AdminIndex",                                           // Route name
            "Admin",                            // URL with parameters
            new { controller = "Admin", action = "Index" }  // Parameter defaults
        );
        routes.MapRoute(
            "Admin",                                           // Route name
            "Admin/Page{page}",                            // URL with parameters
            new { controller = "Admin", action = "Index" }  // Parameter defaults
        );


        routes.MapRoute(
            null,
            "Page{page}",
            new { Controller = "Photo", action="List" , category = (string)null },
            new { page = @"\d+" }
        );

        routes.MapRoute(
            null,
            "{category}",
            new { Controller = "Photo", action = "List", page=1 }
        );


        routes.MapRoute(
            null,
            "{category}/Page{page}",
            new { Controller = "Photo", action = "List"},
            new { page = @"\d+" }
        );


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

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

---

这是因为您的默认路线

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

当创建

操作url

时，它将看到您的

默认路径，因此您的路径将是
Admin/{action}
，因为您的操作与
default
操作相同，所以它将忽略在url中写入它，并且如果您仍然希望显示
索引
则将路由顺序更改为

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


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

这是因为您的默认路线

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

当创建
操作url
时，它将看到您的
默认路径，因此您的路径将是
Admin/{action}
，因为您的操作与
default
操作相同，所以它将忽略在url中写入它，并且如果您仍然希望显示
索引
则将路由顺序更改为

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


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