private void _notificationListener_OnNotification(object source, Notifications.Client.Event.NotificationEventArgs e) { Dispatcher.BeginInvoke(DispatcherPriority.ApplicationIdle, new Action(() => { var window = new NotificationToast(e.Notification.Message, e.Notification.Title, e.Notification.Type, e.Notification.Url); window.Show(); })); }