private void EditWorker(object sender, RoutedEventArgs e)
        {
            var             Sender = sender as Button;
            NewWorkerWindow window = new NewWorkerWindow(ViewModel, Sender.DataContext as Worker);

            window.Show();
        }
        private void AddWorker(object sender, RoutedEventArgs e)
        {
            NewWorkerWindow window = new NewWorkerWindow(ViewModel, new Worker());

            window.Show();
        }