public void ReadMessage() { var result = _manager.ReadMessage(Instance); if (result) { MessageBox.Show("Message has been read from queue", "Read Message", MessageBoxButton.OK, MessageBoxImage.Information); } else { MessageBox.Show("No message has been read from queue", "Read Message", MessageBoxButton.OK, MessageBoxImage.Warning); } _manager.UpdateQueue(Instance); NotifyOfPropertyChange(() => Instance); }