void ReqTradingAccountPasswordUpdate()
{
ThostFtdcTradingAccountPasswordUpdateField req = new ThostFtdcTradingAccountPasswordUpdateField();
req.AccountID = INVESTOR_ID;
req.BrokerID = BROKER_ID;
req.NewPassword = PASSWORD;
req.OldPassword = PASSWORD;
int iResult = api.ReqTradingAccountPasswordUpdate(req, ++iRequestID);
Console.WriteLine("--->>> 资金账户口令更新请求请求: " + ((iResult == 0) ? "成功" : "失败"));
}