public static string GetMTandGH(string platform, string codename, string card_secret)
{
long sCardNum = ProvideCommon.GenerateIntID();
StringBuilder sbText = new StringBuilder();
sbText.AppendFormat("{0}:", platform);
sbText.AppendFormat("{0}:", card_secret);
sbText.AppendFormat("{0}:", codename);
sbText.AppendFormat("{0}", sCardNum);
string sNewCode = ProvideCommon.MD5(sbText.ToString()) + codename + sCardNum;
return(sNewCode);
}