/// <summary>
 /// 根据品种标识返回交易规则_交易方向_交易单位_交易量(最小交易单位)
 /// </summary>
 /// <param name="id"></param>
 /// <returns></returns>
 private IList <XH_MinVolumeOfBusiness> GetMinVolumeOfBusinessByBreedClassIDFromWCF(int id)
 {
     try
     {
         using (SpotTradeRulesClient client = GetClient())
             return(client.GetMinVolumeOfBusinessByBreedClassID(id));
     }
     catch (Exception ex)
     {
         string errCode = "GT-8104";
         string errMsg  = "无法根据交易商品品种编码从管理中心获取交易规则最小交易单位列表。";
         throw new VTException(errCode, errMsg, ex);
     }
 }