https://stackoverflow.com/questions/7135058/c-sharp-message-box-variable-usage
MessageBox.Show(string.Format("ok: {0} , Number: {1}, SerialNumber:{2} ", ok.ToString(), _getNumber.ToString(), _get SerialNumber.ToString()));
https://stackoverflow.com/questions/7135058/c-sharp-message-box-variable-usage
MessageBox.Show(string.Format("ok: {0} , Number: {1}, SerialNumber:{2} ", ok.ToString(), _getNumber.ToString(), _get SerialNumber.ToString()));