void ReqBulkCancelOrder()
{
ThostFtdcBulkCancelOrderField req = new ThostFtdcBulkCancelOrderField();
req.BrokerID = BROKER_ID;
req.InvestorID = INVESTOR_ID;
req.OrderType = EnumOrderTypeType.Normal;
req.nCount = 2;
req.OrderKey_0 = new ThostOrderKeyField();
req.OrderKey_0.ExchangeID = "CZCE";
req.OrderKey_0.FrontID = 126187484;
req.OrderKey_0.SessionID = 5463;
req.OrderKey_0.OrderRef = "16385";
req.OrderKey_1 = new ThostOrderKeyField();
req.OrderKey_1.ExchangeID = "CZCE";
req.OrderKey_1.FrontID = 126187484;
req.OrderKey_1.SessionID = 5463;
req.OrderKey_1.OrderRef = "32769";
int iResult = api.ReqBulkCancelOrder(req, ++iRequestID);
Console.WriteLine("--->>> 批量撤单: " + ((iResult == 0) ? "成功" : "失败"));
}