Filter overriding in ASP.NET MVC 5.0

In this article we are going to focus on how to override filters in MVC 5.

Global Filter: It is an action filter which is automatically added to the list of filters by the default action invoker before it invokes any action methods.

In case of global action filter, code is written once and attached to all the controllers in a single step.

To register the filter as a global filter in the application add it to the filters collection in the RegisterGlobalFilters method of the FilterConfig class in the App_Start folder:

public class MvcApplicationDemo : HttpApplication
{
public static void RegisterGlobalFilters(GlobalFilterCollection filters)
{
filters.Add(new HandleErrorAttribute());
//Add custom filters
}
...
}

 [Authorize(Users="test@gmail.com")]
    public class HomeController : Controller
    {
        [OverrideActionFilters]
        public ActionResult Index()
        {
            return View();
        }

        [OverrideAuthorization]
        [Authorize(Users="abc@hotmail.com")]
        public ActionResult About()
        {
            ViewBag.Message = "Your application description page.";

            return View();
        }

        public ActionResult Contact()
        {
            ViewBag.Message = "Your contact page.";

            return View();
        }
    }