“System.Web.Routing.RouteCollection”不包含定义“MapHttpRoute”

Question

在我添加下面的代码来处理的处理HTTP 404错误的ASP.NET Web API的RoutingConfig.cs

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

     routes.MapRoute(
      name: "Default", 
      url: "{controller}/{action}/{id}", 
      defaults: new { controller = "Home", action = "Index", id = UrlParameter.Optional } 
     ); 

     routes.MapRoute(
      name: "Error404", 
      routeTemplate: "{*url}", 
      defaults: new { controller = "Error", action = "Handle404" } 
     ); 
    } 
} 

它将引发下面的错误等

“System.Web.Routing.RouteCollection”不包含 “MapHttpRoute”的定义和没有扩展方法“MapHttpRoute”接受类型为“一个 第一个参数的System.Web .Routing.RouteCollection'可能是 （是否缺少using指令或程序集引用？）

我试图屁股命名空间System.Web.Routing.RouteCollection，但它不工作

Answer 1

使用以下

//Catch-All InValid (NotFound) Routes 
routes.MapRoute(
    name: "Error404", 
    url: "{*url}", 
    defaults: new { controller = "Error", action = "Handle404" } 
); 

确保这是被映射为这最后的路线是一个包罗万象的路线。

Answer 2

因为the following URI does not match, because it lacks the "api" segment.

https://www.asp.net/web-api/overview/web-api-routing-and-actions/routing-in-aspnet-web-api

RouteTemplate小号被配置为路由传入的请求。