CommerceRoutingInitialization.cs

[InitializableModule]
[ModuleDependency(typeof(EPiServer.Commerce.Initialization.InitializationModule))]
public class CommerceRoutingInitialization : IInitializableModule
{
	public void Initialize(InitializationEngine context)
	{
		ReferenceConverter converter = context.Locate.Advanced.GetInstance<ReferenceConverter>();

		ContentReference rootReference = converter.GetRootLink();

		IContentRepository contentRepository = context.Locate.Advanced.GetInstance<IContentRepository>();

		CatalogContentBase commerceRoot = contentRepository.Get<CatalogContentBase>(rootReference);
		
		var customRouter = new TabHierachicalCatalogRouter(commerceRoot, (Func<ContentReference>) (() =>
		{
			if (!ContentReference.IsNullOrEmpty(SiteDefinition.Current.StartPage))
				return SiteDefinition.Current.StartPage;

			return SiteDefinition.Current.RootPage;
		}));

		RouteTable.Routes.RegisterPartialRouter(customRouter);
	}

	public void Preload(string[] parameters) { }

	public void Uninitialize(InitializationEngine context)
	{
	}
}