private void ActivityClick(BaseTask task, Image image)
        {
            if (task.IsActive)
            {
                task.CloseActivity();
                image.Source = new BitmapImage(new Uri("/Resources/rec.png", UriKind.Relative));

                NotificationHelper.Notify(NotificationType.TaskActivityStopped, task.Name);
            }
            else
            {
                task.StartActivity();
                image.Source = new BitmapImage(new Uri("/Resources/recActive.png", UriKind.Relative));

                NotificationHelper.Notify(NotificationType.TaskActivityStarted, task.Name);
            }

            using (IRepository <Task, long> repository = PersistentFactory.GetContext().GetRepository <Task, long>())
                repository.Update(Task);
        }