Question

I have a modelbinder being added during Application_Start like this:

    protected void Application_Start()
    {
        XmlConfigurator.Configure();

        // Model Binding
        ModelBinders.Binders.Add(typeof(SessionUser), new SessionUserModelBinder());
        ////////////////

        AreaRegistration.RegisterAllAreas();

        RegisterGlobalFilters(GlobalFilters.Filters);
        RegisterRoutes(RouteTable.Routes);
    }

I would like the Application_Start method to call a separate method to add my custom model binder to the list like:

namespace NewNameSpace
{
    public class TestStartClass
    {
        public static void AppStart()
        {
            ModelBinders.Binders.Add(typeof(SessionUser), new SessionUserModelBinder());
        }
    }
}

The problem is that when I try this, Binder in ModelBinders.Binder returns an error which says:

Error 1 'System.Web.Mvc.ModelBinders' does not contain a definition for 'Binder'

I am using System.Web.Mvc. What am I missing that’s preventing this from working?

Answer 1

It looks like you must have a typo in your code. The error message is saying you are trying to reference a class member like ModelBinders.Binder. You need that to be ModelBinders.Binders.Add().

ModelBinders.Binders Property MSDN Reference