private void BTNumberSub_Click(object sender, RoutedEventArgs e) { if (NumLicense.Text != null && NumType != null) { int res = pmc.AddParkMember(NumLicense.Text, membertypeid, NumNickName.Text, NumPhone.Text); if (res > 0) { MessageBox.Show("车牌号为" + NumLicense.Text + "的车主已成为会员"); } else { MessageBox.Show("添加失败!"); } } }