Asp.net mvc 带有可选参数的ASP.NET MVC自定义路由

我想要一条有两个可选参数的路线；我认为以下方法可行：

routes.MapRoute(
    "ProductForm",
    "products/{action}/{vendor_id}_{category_id}",
    new { controller = "Products", action = "Index", vendor_id = "", category_id = "" },
    new { action = @"Create|Edit" }
);

但它仅在同时提供了

vendor\u id

和

category\u id

时起作用；使用

RouteDebug

我发现

/products/create/_3

不会触发我的路由，所以我添加了另外两个路由：

routes.MapRoute(
    "ProductForm1",
    "{controller}/{action}/_{category_id}",
    new { controller = "Home", action = "Index", category_id = "" },
    new { controller = "Products", action = @"Create|Edit" }
);

routes.MapRoute(
    "ProductForm2",
    "{controller}/{action}/{vendor_id}_",
    new { controller = "Home", action = "Index", vendor_id = "" },
    new { controller = "Products", action = @"Create|Edit" }
);

因此，问题是：

• 使用三条路由是使用可选参数创建路由的唯一方法吗

• 这些URL是否正常，也就是说，您是否会建议一种更好的方法

---

我觉得不错，但我会做一些不同的事情：

routes.MapRoute(
"ProductForm1",
"product/category/{category_id}",
new { controller = "Home", action = "Index", category_id = "" },
new { controller = "Products", action = @"Create|Edit" }

))
然后

 routes.MapRoute(
"ProductForm1",
"product/details/{product_id}",
new { controller = "Home", action = "Index", product_id = "" },
new { controller = "Products", action = @"Create|Edit" }

))
那么您的课程可以如下所示：

ActionResults Index(){}
ActionResults Index(int category_id){// get categories}
ActionResults Index(int product_id){ // get products}

---

但那只是我
看起来不错，但我会做一些不同的事情：

routes.MapRoute(
"ProductForm1",
"product/category/{category_id}",
new { controller = "Home", action = "Index", category_id = "" },
new { controller = "Products", action = @"Create|Edit" }

))
然后

 routes.MapRoute(
"ProductForm1",
"product/details/{product_id}",
new { controller = "Home", action = "Index", product_id = "" },
new { controller = "Products", action = @"Create|Edit" }

))
那么您的课程可以如下所示：

ActionResults Index(){}
ActionResults Index(int category_id){// get categories}
ActionResults Index(int product_id){ // get products}

---

但这只是我的问题，为什么不尝试为供应商id提供一个默认值（如果没有指定，即0），以帮助您避开一条路线

routes.MapRoute("ProductForm","products/{action}/{vendor_id}_{category_id}",
new { controller = "Products", action = "Index", vendor_id = "0", category_id = "" },   
new { action = @"Create|Edit" });

---

为什么不尝试为vendor_id提供一个默认值（如果未指定，即0），以帮助您避开一条路线

routes.MapRoute("ProductForm","products/{action}/{vendor_id}_{category_id}",
new { controller = "Products", action = "Index", vendor_id = "0", category_id = "" },   
new { action = @"Create|Edit" });

---

您可以这样尝试：

routes.MapRoute(    
"ProductForm",
"products/{action}/{arg1}/{arg1_id}/{arg2}/{arg2_id}",    
new { controller = "Products", action = "Index", arg1 = "", arg2 = "", arg1_id = "", arg2_id = "" },
new { action = @"Create|Edit" });

/products/create/vendor/10
/products/create/category/20
/products/create/vendor/10/category/20
/products/create/category/20/vendor/10

然后在actionresult方法中创建一些逻辑来检查arg1和arg2，并确定传入了哪个参数
您的actionlink URL如下所示：

routes.MapRoute(    
"ProductForm",
"products/{action}/{arg1}/{arg1_id}/{arg2}/{arg2_id}",    
new { controller = "Products", action = "Index", arg1 = "", arg2 = "", arg1_id = "", arg2_id = "" },
new { action = @"Create|Edit" });

/products/create/vendor/10
/products/create/category/20
/products/create/vendor/10/category/20
/products/create/category/20/vendor/10

---

就我个人而言，我不喜欢这条路线，因为这条路线看起来不太干净，但应该能给你我认为你想要实现的目标？
你可以这样尝试：

routes.MapRoute(    
"ProductForm",
"products/{action}/{arg1}/{arg1_id}/{arg2}/{arg2_id}",    
new { controller = "Products", action = "Index", arg1 = "", arg2 = "", arg1_id = "", arg2_id = "" },
new { action = @"Create|Edit" });

/products/create/vendor/10
/products/create/category/20
/products/create/vendor/10/category/20
/products/create/category/20/vendor/10

然后在actionresult方法中创建一些逻辑来检查arg1和arg2，并确定传入了哪个参数
您的actionlink URL如下所示：

routes.MapRoute(    
"ProductForm",
"products/{action}/{arg1}/{arg1_id}/{arg2}/{arg2_id}",    
new { controller = "Products", action = "Index", arg1 = "", arg2 = "", arg1_id = "", arg2_id = "" },
new { action = @"Create|Edit" });

/products/create/vendor/10
/products/create/category/20
/products/create/vendor/10/category/20
/products/create/category/20/vendor/10

就我个人而言，我不喜欢这条路线，因为这条路线看起来不太干净，但应该给你我认为你想要实现的目标