void ReqQryBrokerTradingParams()
{
ThostFtdcQryBrokerTradingParamsField req = new ThostFtdcQryBrokerTradingParamsField();
req.BrokerID = BROKER_ID;
req.InvestorID = INVESTOR_ID;
int iResult = api.ReqQryBrokerTradingParams(req, ++iRequestID);
Console.WriteLine("--->>> 查询经纪公司交易参数请求: " + ((iResult == 0) ? "成功" : "失败"));
}