private void btnCustomersDelete_Click(object sender, EventArgs e) { string customerName = txtCustomersFName.Text+txtCustomersLName; if (string.IsNullOrWhiteSpace(customerName)) { MessageBox.Show("Please select Customer name from list.", "Error Message"); txtCustomersFName.Clear(); txtCustomersLName.Clear(); txtCustomersFName.Focus(); } else { try { var booking = new Booking(database); var result = booking.DeleteCustomer((Customer)cboCustomersName.SelectedItem); if (result) { cboCustomersName.DataSource = booking.GetCustomer().ToList(); cboCustomersName.DisplayMember = "Name"; txtCustomersFName.Clear(); txtCustomersLName.Clear(); cboRentCustomerName.DataSource = booking.GetCustomer().ToList(); cboRentCustomerName.DisplayMember = "Name"; } else { MessageBox.Show("Customer deletion not succesfull."); } } catch (VideoRentalException ex) { MessageBox.Show(String.Format("Error occured: {0} is not deleted succesfully", ex.Item.Name)); } catch (Exception ex) { MessageBox.Show(string.Format("Error Occoured: {0}", ex.Message)); } } }