ASP.NET route does not receive the parameter in Action after being set

Question

I Mapeed a new route on my site like this:

routes.MapRoute(
            "PaymentEdit",
            "Payment/{type}",
            new { controller = "Contributor", action = "Payment" },
            new { type = UrlParameter.Optional }
);

My Action is this:

[AutorizacaoFilterAttribute]
public ActionResult Payment(string rt)
{
    Debug.WriteLine(rt);
    return View();
}

The controller is called Contributor, it’s right. But when I call the url: http://localhost:54345/Contributor/Payment/1 Debug doesn’t return anything in Output. I’ve done the same kind of route in another Action and works normal, in my view is the same thing, follow the code:

Route:

routes.MapRoute(
            "Home",
            "Image/{produtoid}",
            new { controller = "Home", action = "Image"},
            new { produtoid = UrlParameter.Optional }
);

Action:

public ActionResult Image(string id)
{  
        Debug.WriteLine(id);
        return View();
}

When I call the url http://localhost:54345/Home/Image/2107209300 the Debugme return normally the value 2107209300 I’ve tried it several times in different ways, and I can’t find the difference between the two.

My complete Route.config:

using System;
using System.Collections.Generic;
using System.Linq;
using System.Web;
using System.Web.Mvc;
using System.Web.Routing;

namespace SiteTeste
{
    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(
                "Home",
                "Image/{produtoid}",
                new { controller = "Home", action = "Image"},
                new { produtoid = UrlParameter.Optional }
            );

            routes.MapRoute(
                "Contributor",
                "Payment/{type}",
                new { controller = "Contributor", action = "Payment" },
                new { type = UrlParameter.Optional }
            );
        }
    }
}

EDIT: Changing the route and inserting it in first place on route.config, when I pass the url: http://localhost:54345/Contributor/Payment/41242 I have the following error:

The type constraint entry on the route with the 'Contributor/Payment/{type}' URL must have a string value or be of a type that implements Irouteconstraint.

Follow the edited route:

routes.MapRoute(
            "Contributor",
            "Contributor/Payment/{type}",
            new { controller = "Contributor", action = "Payment" },
            new { type = UrlParameter.Optional }
);

Answer 1

You were calling wrong on your first doubt, the url correct for the created route:

Payment/123
Payment/abc

and the other way I was trying to do was wrong and fall into the standard route Default that does not have type and yes id configured.

Reworked configuration:

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

    routes.MapRoute(
        "Home",
        "Image/{produtoid}",
        new {
            controller = "Home",
            action = "Image",
            productid = UrlParameter.Optional
        },
        new { produtoid = @"\w+" }
     );

    routes.MapRoute(
        "Contributor",
        "Payment/{type}",
        new {
            controller = "Contributor",
            action = "Payment",
            type = UrlParameter.Optional
        },
        new { type = @"\w+" }
     );

    routes.MapRoute(
        "Contributor_Payment",
        "Contributor/Payment/{type}",
        new
        {
            controller = "Contributor",
            action = "Payment",
            type = UrlParameter.Optional
        },
        new { type = @"\w+" }
     );

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

note that 1 additional route has now been created, so it will work

+------------------+----------------------+--------------------------------+
|   Controler      |      Action          |       Url                      |
+------------------+----------------------+--------------------------------+
|   Home           |       Image          |   Home/Image/123456            |
+------------------+----------------------+--------------------------------+
|   Contributor    |      Payment         |   Payment/123456               |
+------------------+----------------------+--------------------------------+
|   Contributor    |      Payment         |   Contributor/Payment/123456   |
+------------------+----------------------+--------------------------------+

the latter two fell into the same Controller and Action as a way of exemplifying, another factor the route Default is always the last and finally has been added rules on the route that prevents running routes that do not match the rule, in the case itself will accept text on the two routes, but, this may be limited to numbers or even custom rule settings.

_References

• Creating a Route Constraint (C#)
• Working with Route Boundaries (Route Constraints) in ASP.NET MVC
• ASP.NET MVC routing by string id? ^Soen
• must have a string value or be of a type which Implements Irouteconstraint ^Soen
• Learn About ASP.NET MVC
• Creating custom route constraints in ASP.NET MVC