public MResultList <ProductImg> GetGoodsPicList(string sid, string token, string guid, string user_id, string uid, string gid)
        {
            var result = new MResultList <ProductImg>(true);

            try
            {
                var iGid = MCvHelper.To <int>(gid);
                result = MCacheManager.UseCached <MResultList <ProductImg> >(
                    string.Format("GetGoodsPicList{0}_{1}", sid, gid),
                    MCaching.CacheGroup.Goods,
                    () => GoodsBLL.GetGoodsPicList(sid, uid, iGid));
            }
            catch (Exception ex)
            {
                result.status = MResultStatus.ExceptionError;
                result.msg    = "处理图片列表数据出错!";
            }

            return(result);
        }