private void Cancel_Click(object sender, RoutedEventArgs e)
        {
            UnitListView ULV = new UnitListView();

            ULV.DataContext = DataContext;
            ULV.Show();
            Close();
        }
        private void UnitsView_Click(object sender, RoutedEventArgs e)
        {
            UnitListView ULV = new UnitListView();

            ULV.SetViewModel();
            ULV.Show();
            Close();
        }
 private void Update_Click(object sender, RoutedEventArgs e)
 {
     if (TextName.Text != "" && ComboEmployers.SelectedItem != null)
     {
         UnitListView ULV = new UnitListView();
         ULV.DataContext = DataContext;
         ULV.Show();
         Close();
     }
     else
     {
         MessageBox.Show("Введена не вся информация");
     }
 }