可请service端修改webmethod
    [WebMethod]        public List<HandoverBox> GetBoxsForWeb(int pageIndex, string filterString, out long totalRecords)        {            IList<HandoverBox> listOld = GetBoxs(pageIndex, filterString, out totalRecords);            List<HandoverBox> listNew = new List<HandoverBox>();            listNew.AddRange(listOld);            return listNew;        }