System.ComponentModel.Navigation.Controller.OnActionCompleted C# (CSharp) Метод

        private void OnActionCompleted(object sender, EventArgs e)
        {
            Async<ActionResult> asyncActionResult = (Async<ActionResult>)sender;
            if (asyncActionResult.HasError) {
                asyncActionResult.MarkErrorAsHandled();
                _asyncResult.Complete(new ErrorActionResult(asyncActionResult.Error));
            }
            else {
                _asyncResult.Complete(asyncActionResult.Result);
            }
        }