URL路由

    public class RouteConfig
    {
        public static void RegisterRoutes(RouteCollection routes) {
            routes.MapPageRoute("default","","~/Default.aspx");
            routes.MapPageRoute("cart1","cart","~/Store/Cart.aspx");
            routes.MapPageRoute("cart2","apps/shopping/finish","~/Store/Cart.aspx");
        }
    }

protected void Application_Start(object sender, EventArgs e)
        {
            RouteConfig.RegisterRoutes(RouteTable.Routes);
        }

//使用routes.MapRoute 方法注册路由
routes.MapRoute("MyRoute", "{controller}/{action}");

//创建默认的路由规则
routes.MapRoute(
name: "Default",
url: "{controller}/{action}/{id}",
defaults: new { controller = "Home", action = "Index", id = UrlParameter.Optional }
);

//使用静态变量的 Url片段(匹配：http://localhost:20234/xxx/Home/Index)
routes.MapRoute("", "xxx/{controller}/{action}", new { controller = "Home", action = "Index" });

//使用静态片段和默认值为特定的路由创建别名
routes.MapRoute("ShopSchema", "shop/{action}", new { controller = "Home"});//这里用户在url中输入shop,然后会被替换成Home。
routes.MapRoute("ShopSchema", "oldController/oldAction", new { controller = "Home",action="Index"});

//在控制器的方法中，接收Url中的参数
public ActionReulst CustomVariable(){
ViewBag.variable=RouteData.Values["id"];//获取Url中，id片段的值
return View();
}

//约束路由
//1、使用正则表达式约束路由,和使用指定的值来约束路由(controller以H打头（正则表达式），action只能是Index或者是About（指定的值）)
routes.MapRoute("ShopSchema", "{controller}/{action}/{id}/{*catchall}", new { controller = "Home",action="Index",id=UrlParameter.Optional},
new {controller="^H.*",action="^Index$|^About$"},
new []{"URLsAndRoutes.Controllers"}
);
//2使用HTTP方法约束路由。(好像用的不是太多)controller以H打头（正则表达式），action只能是Index或者是About（指定的值）)
routes.MapRoute("ShopSchema", "{controller}/{action}/{id}/{*catchall}", new { controller = "Home",action="Index",id=UrlParameter.Optional},
new {controller="^H.*",action="Index|About",httpMethod=new HttpMethodConstraint("GET")},
new []{"URLsAndRoutes.Controllers"}
);

还有 使用类型约束， 
　　 值类型约束
 　　自定义约束。