ASP.NET MVC 5 Attribute Routing

Question

I'm trying to use route attributes in MVC 5. I created an empty MVC project in Visual Studio to experiment with and so far I can't get the routing to work. I'm using this page as a reference. I have the latest assemblies and updated all NuGet packages to their latest versions.

Here's my code:

// RouteConfig.cs
namespace MvcApplication1
{
    using System.Web.Mvc;
    using System.Web.Routing;

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

            // Enables MVC attribute routing.
            routes.MapMvcAttributeRoutes();

            // The default route mapping. These are "out of the bag" defaults.
            routes.MapRoute(null, "{controller}/{action}/{id}", new
            {
                controller = "Home",
                action = "Index",
                id = UrlParameter.Optional
            });
        }
    }
}

// TestControler.cs
namespace MvcApplication1.Controllers
{
    using System.Web.Mvc;

    public class TestController : Controller
    {
        public ContentResult Output1()
        {
            return Content("Output 1");
        }

        [Route("Test/Output2")]
        public ContentResult Test2()
        {
            return Content("Output 2");
        }
    }
}


@* Index.cshtml *@
@Html.Action("Output1", "Test")
@Html.Action("Output2", "Test")

The Output1() method renders properly. However, when Output2() is rendered, I get the error "A public action method 'Output2' was not found on controller 'MvcApplication1.Controllers.TestController'."

Charlie Brown · Accepted Answer · 2014-07-07 19:13:02Z

8

Your action is named Test2 not Output2. Change the following

@Html.Action("Test2", "Test")

answered Jul 7, 2014 at 19:13

Charlie Brown

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2 Comments

Halcyon Over a year ago

That is correct. I named it Test2 and would like the route attribute to intercept the call to "/test/output2" and use the Test2 method. In the examples on the blog post I linked to, they had route attributes that were named differently than the method names. I'd like to be able to do this.

Charlie Brown Over a year ago

You can name the routes anything you want, but the Html.Action method parameters are based on the actual method names in the controller.

Xavier Leclercq · Accepted Answer · 2014-07-07 19:16:26Z

1

This is because @Html.Action will not actually use routing. With it you explicitly specify actions and controllers. The routing will be used when someone for instance makes the http://example.org/Test/Output2 request from a browser.

answered Jul 7, 2014 at 19:16

Xavier Leclercq

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2 Comments

Halcyon Over a year ago

This is very bad news for my situation. In my project, I have some MVC routing which isn't being honored and I have to use relative URLs instead of Url.Action. This is problematic because I use ReSharper to check for all uses of a particular controller method in my views. With the relative Urls, I'm unable to find all uses of a particular controller method and I have to do a project-wide string search. I was hoping the route attributes would solve this problem, but it looks like they are more suited for Web API than MVC.

Charlie Brown Over a year ago

@Halcyon If you have your routing setup correctly, the Action() method will output the correct route, even if you use attributes.

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