/// <summary>
///请求查询汇率
/// </summary>
public int ReqQryExchangeRate(ThostFtdcQryExchangeRateField pQryExchangeRate, int nRequestID)
{
return(Interop.TdReqQryExchangeRate(Handle, pQryExchangeRate, nRequestID));
}
public static extern int TdReqQryExchangeRate(IntPtr pApi, ThostFtdcQryExchangeRateField pQryExchangeRate, int nRequestID);