void ReqQryInvestor()
{
ThostFtdcQryInvestorField req = new ThostFtdcQryInvestorField();
req.BrokerID = BROKER_ID;
req.InvestorID = INVESTOR_ID;
int iResult = api.ReqQryInvestor(req, ++iRequestID);
Console.WriteLine("--->>> 请求查询投资者: " + ((iResult == 0) ? "成功" : "失败"));
}