public string getBalance(int taiKhoan)
{
try
{
if (KetNoiThietBi())
{
return(sms.GetBalances(serialPort, taiKhoan));
}
}
catch (Exception ex)
{
closeConnect();
File.AppendAllText(@"C:\netmd.log", "Message:" + ex.Message + "\r\n");
File.AppendAllText(@"C:\netmd.log", "StackTrace:" + ex.StackTrace + "\r\n");
File.AppendAllText(@"C:\netmd.log", "========================================================\r\n");
}
return("");
}