public void TestQueryInstrumentMarginRate() { _api.OnRspQryInstrumentMarginRate += new TradeApi.RspQryInstrumentMarginRate((ref CThostFtdcInstrumentMarginRateField pInstrumentMarginRate, ref CThostFtdcRspInfoField pRspInfo, int nRequestID, byte bIsLast) => { if (pRspInfo.ErrorID == 0) { Console.WriteLine("合约保证金率查询成功, InstrumentID: {0}", pInstrumentMarginRate.InstrumentID); } else { Console.WriteLine(pRspInfo.ErrorMsg); } Assert.IsTrue(pRspInfo.ErrorID == 0); }); _api.QueryInstrumentMarginRate(1, "bu1712"); Thread.Sleep(200); }