VSTalk.Engine.ViewModel.NotificationViewModel.StartListen C# (CSharp) Method

        public void StartListen()
        {
            _messageEvent = delegate
            {
                HasNotifications = Notifications.Messages.Count > 0;

                CommandManager.InvalidateRequerySuggested();
                SetCurrentNotification();
            };
            Notifications.Messages.CollectionChanged += _messageEvent;
        }