private void btnDeleteCustomer_Click(object sender, RoutedEventArgs e)
{
facade.deleteCustomer(c);
this.dataGridCustomer.ItemsSource = facade.getCustomersFromDataBase;
this.dataGridCustomer.Items.Refresh();
this.dataGridBooking.SelectedItem = null;
this.dataGridCustomer.SelectedItem = null;
this.disableButtons();
/*
* data.deleteCustomer(c.CustomerReferenceNumber);
*
* customers.Remove(c);
*
* this.dataGridCustomer.ItemsSource = customers;
* this.dataGridCustomer.Items.Refresh();
*
* this.dataGridCustomer.SelectedItem = null;
* this.dataGridBooking.SelectedItem = null;
*
* this.disableButtons();
*/
}