private void DeleteCustomerLink_Click(object sender, MouseButtonEventArgs e)
 {
     var delWindow = new DeleteCustomer();
     delWindow.SetParent(StartGrid);
 }
 private void DelCustomer_Executed(object sender, ExecutedRoutedEventArgs e)
 {
     var delCustomerDialog = new DeleteCustomer();
     delCustomerDialog.SetParent(StartGrid);
 }