AcManager.Pages.Dialogs.BookingDialog.OnClosing C# (CSharp) Метод

        protected override void OnClosing(CancelEventArgs e) {
            base.OnClosing(e);

            if (IsResultCancel) {
                try {
                    _cancellationSource.Cancel();
                } catch (ObjectDisposedException) { }
                ServerEntry?.CancelBookingCommand.Execute(null);
            }
        }