CatalogueControllerBase is Custom Controller base? Is it inherited from CatalogContentBase?

Did you implement custom routing for the catalogue in Commerce Initialization?

CatalogControllerBase is a custom controller yeah, inheriting from ContentController. 

That's all my routing code here, I think it's fairly standard unless I've missed something.

using System.Web.Mvc;
using System.Web.Routing;
using EPiServer.Commerce.Routing;
using EPiServer.Framework;
using EPiServer.Framework.Initialization;
using EPiServer.ServiceLocation;

namespace CommerceTraining.Infrastructure
{
    [InitializableModule]
    [ModuleDependency(typeof(EPiServer.Commerce.Initialization.InitializationModule))]
    public class EPiServerCommerceInitializationModule : IConfigurableModule
    {
        public void Initialize(InitializationEngine context)
        {
            CatalogRouteHelper.MapDefaultHierarchialRouter(RouteTable.Routes, false);
        }

        public void Preload(string[] parameters) { }

        public void Uninitialize(InitializationEngine context)
        {
        }

        public void ConfigureContainer(ServiceConfigurationContext context)
        {
            DependencyResolver.SetResolver(new StructureMapDependencyResolver(context.StructureMap()));
        }
    }
}

Hi,

As a thought, shouldn't your CatalogControllerBase inherit ContentController<T> rather than ContentController<CatalogContentBase>? Like this:

public class CatalogControllerBase<T> : ContentController<T> where T : CatalogContentBase
{
    //Controller code goes here...
}

By having all of your controllers ultimately inheriting ContentController<CatalogContentBase>, I'd imagine Episerver will see that as a bunch of controllers which handle CatalogContentBase rather than your specific catalog content types.

Do you have any custom router? 

It seems like the problem is with the base controller. I tried your controller and I got the same error. 

Example If you want to create One base controller for all catalogue pages 

https://github.com/episerver/Foundation/blob/develop/src/Foundation/Features/CatalogContent/CatalogContentControllerBase.cs 

If you want a Base controller for categories only (Nodes)

public class NodeControllerBase<T> : ContentController<T> where T : NodeContentBase
{
//....
}

Thanks guys, yep the problem was in the CatalogControllerBase. Switched it out to;

public class CatalogControllerBase<T> : ContentController<T> where T : CatalogContentBase

and it works perfectly now.