test.cs

public class MvcApplication : System.Web.HttpApplication {
  protected void Application_Start() {
    AreaRegistration.RegisterAllAreas();
    FilterConfig.RegisterGlobalFilters(GlobalFilters.Filters);
    RouteConfig.RegisterRoutes(RouteTable.Routes);
    BundleConfig.RegisterBundles(BundleTable.Bundles);

    ValueProviderFactories.Factories.Remove(
      ValueProviderFactories.Factories.OfType<JsonValueProviderFactory>().FirstOrDefault());

    ValueProviderFactories.Factories.Add(new JsonDotNetValueProviderFactory());
  }
}