ASP.NET MVC MapRoute 多于 1 个参数问题

Question

我正在尝试将 MapRoute 与多个参数一起使用，但它无法正常工作。

我的RegisterRoutes:

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(
        "TestRoute",                                              // Route name
        "{controller}/{action}/{id}/{tID}",                           // URL with parameters
        new { controller = "Test", action = "Index", id = "", tID = "" }  // Parameter defaults
    );
}

我的测试控制器：

public class TestController : Controller
{
    public ActionResult Index(int? id, int? tID)
    {
        // Some code to create viewModel

        return View(viewModel);
    }
}

我从 Html.ActionLink:

调用这个方法

@Html.ActionLink(@item.Description, "Index", "Test", 
    new { id = @item.CatID, tID = @item.myTID }, null)

但是，它 returns 将 url 作为：/Test/Index/3?tID=264981 而不是 /Test/Index/3/264981

有人知道我做错了什么吗？

Answer 1

这里有几个问题：

应先注册更具体的路线，然后再注册一般路线。
由于首场比赛总是获胜，路线需要以某种方式约束。例如，为了避免在路由B之前注册的路由A匹配应该由路由B处理的情况。
最合乎逻辑的行为通常是使路由值成为必需的，而不是可选的。

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

    // Register the most specific route first
    routes.MapRoute(
        "TestRoute",

        // Constrain the URL - the simplest way is just to add a literal
        // segment like this, but you could make a route constraint instead.
        "Test/{action}/{id}/{tID}", 

        // Don't set a value for id or tID to make these route values required.
        // If it makes sense to use /Test/Action without any additional segments,
        // then setting defaults is okay.
        new { controller = "Test", action = "Index" }  
    );

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

参考：

ASP.NET MVC MapRoute 多于 1 个参数问题

ASP.NET MVC MapRoute more than 1 parameter issue

c#

asp.net

asp.net-mvc

routes

asp.net-mvc-routing