void ReqQryContractBank()
{
ThostFtdcQryContractBankField req = new ThostFtdcQryContractBankField();
req.BrokerID = BROKER_ID;
int iResult = api.ReqQryContractBank(req, ++iRequestID);
Console.WriteLine("--->>> 查询银期签约银行:" + ((iResult == 0) ? "成功" : "失败"));
}