AreaRegistration.RegisterAllAreas() is not Registering Rules For Area

Question

I have an MVC 4 web application which consists some areas. I have a problem with the routing rules of an area named "Catalog". The RouteConfig.cs file is:

    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 },
        );
    }

and Global.asax as follows:

    protected void Application_Start()
    {
        AreaRegistration.RegisterAllAreas();

        WebApiConfig.Register(GlobalConfiguration.Configuration);
        FilterConfig.RegisterGlobalFilters(GlobalFilters.Filters);
        RouteConfig.RegisterRoutes(RouteTable.Routes);
        BundleConfig.RegisterBundles(BundleTable.Bundles);
    }

And CatalogAreaRegistration is something like this:

public class CatalogAreaRegistration : AreaRegistration
{
    public override string AreaName
    {
        get
        {
            return "Catalog";
        }
    }

    public override void RegisterArea(AreaRegistrationContext context)
    {
        context.MapRoute(
            "Catalog_default",
            "Catalog/{controller}/{action}/{id}",
            new { action = "Index", id = UrlParameter.Optional }
        );
    }
}

The problem is when i debug, RouteCollection routes does not include rules that are defined in the area. I used routedebugger and saw that routes collection does not consists rules of "Catalog" area. It has only rules in the RouteConfig.

I have no idea what is the problem. Thanks in advance.

Answer 1

I think due to Visual Studio's caching, some of the dll's aren't compiled properly and this situation can happen. If you do, delete all temp files from following locations:

• C:\Temp
• C:\Users\%Username%\AppData\Local\Microsoft\VisualStudio
• C:\Windows\Microsoft.NET\Framework\v4.0.30319\Temporary ASP.NET Files
• C:\Windows\Microsoft.NET\Framework64\v4.0.30319\Temporary ASP.NET Files
• Path\To\Your\Project\obj\Debug

Update :

• AppData\Local\Temp\Temporary ASP.NET Files

Then restart the Visual Studio. This is how i resolved.

Answer 2

Just add the namespace of your controllers to the AreaRegistration:

public override void RegisterArea(AreaRegistrationContext context)
    {
        context.MapRoute(
            "Admin_default",
            "Admin/{controller}/{action}/{id}",
            new { controller = "Home", action = "Index", id = UrlParameter.Optional },
            **namespaces: new string[] { "Web.Admin.Controllers" }**
        );
    }