Kontroler i Autorize

Code:
  [Authorize]
        public ActionResult Index()
        {
            
            return View();
        }

Code:
public class Autorizacija:FilterAttribute,IAuthorizationFilter
  {
      public void OnAuthorization(AuthorizationContext filterContext)
      {
          
      }
  }

Code:

            // Check if account is logged
            var Account = // Read from session
            if (Account != null) return; // User is logged, do nothing

            if (LoginRedirect)
            {
                // Redirect to login
                Context.Result = new RedirectToRouteResult(...);
            }
            else
            {
                // Redirect to not authorized
                Context.Result = new RedirectToRouteResult(...);
            }