ASP.NET MVC routing with multiple parameters

Question

I have a ManageController with several action methods (Index and Details) which have parameters "group" and "key" and I want to setup my link like this:

http://localhost:49900/Manage/1
http://localhost:49900/Manage/Details/1/sample

But instead the link goes like this

http://localhost:49900/Manage?group=1
http://localhost:49900/Manage/Details?group=1&key=sample

This here is my routing setup:

routes.MapRoute(
            name: "Manage",
            url: "{controller}/{action}/{group}",
            defaults: new { controller = "Manage", action = "Index", group = "" }
        );

routes.MapRoute(
            name: "ManageDetails",
            url: "{controller}/{action}/{group}/{key}",
            defaults: new { controller = "Manage", action = "Details", group = "", key = UrlParameter.Optional }
        );

Controller action methods:

public ActionResult Index(string group)
{
    return View();
}

public ActionResult Details(string group, string key)
{
    return View();
}

Action Links:

<li>
    <a href="@Url.Action("Index", "Manage", new { group = "1" })">Manage</a>
</li>
<li>
    <a href="@Url.Action("Details", "Manage", new { group = "1", key = "sample" })">Manage Details</a>
</li>

Answer 1

Consider to use the following routes:

routes.MapRoute(
            name: "ManageDefault",
            url: "{controller}/{group}", // <= the {action} is omitted
            defaults: new { controller = "Manage", action = "Index", group = "" }
        );
routes.MapRoute(
            name: "ManageDetails",
            url: "{controller}/{action}/{group}/{key}",
            defaults: new { controller = "Manage", action = "Details", group = "",
                            key = UrlParameter.Optional }
        );

Your problem in the ManageDefault route declaration: it become universal when using format like "{controller}/{action}/{group}". Therefore, the second template will never take place.

The difference from your code is only removing the {action} section in the first MapRoute(). This should serve the http://localhost:49900/Manage/1 URL format and in the same time the second route template will be used as the default.

---

In some cases using Attribute Routing may be easier to serve routes like in your case.

See the following post: Attribute Routing in ASP.NET MVC 5