MVC Routing cant seem to get away from default with one paramaeter

Question

I am relatively new to MVC, done the basis from web tutorials. I am now in the process of starting an app from scratch, without bastardizing tutorials.

I am trying to map a route, like this

 routes.MapRoute(
                name: "DrillDown",
                url: "Home/CupboardDrillDown/{productcat}");

However evertime i enter

/home/CupboardDrillDown/1

in my browser i get an error saying that productcat is null, i think that its using the default route, so its passing ID instead of productcat.

The parameters dictionary contains a null entry for parameter 'productcat' of non-nullable type 'System.Int32' for method

Thanks in advance.

Answer 1

if you are using productcat in your route then your action parameter must be also named as productcat.

please follow an example below

 routes.MapRoute(
            name: "DrillDown",
            url: "Home/CupboardDrillDown/{productcat}"
  );

public ActionResult CupboardDrillDown(int productcat)
    {
        return View();
    }

Hope that helps.