public SigmaResultType ListClientCostCode()
        {
            SigmaResultType result = new SigmaResultType();
            try
            {
                var queryStr = WebOperationContext.Current.IncomingRequest.UriTemplateMatch.QueryParameters;
                string max = queryStr["max"];
                string offset = queryStr["offset"];
                string s_option = queryStr["s_option"];
                string s_key = queryStr["s_key"];
                string o_option = queryStr["o_option"];
                string o_desc = queryStr["o_desc"];

                CostCodeMgr costCodeMgr = new CostCodeMgr();
                result = costCodeMgr.ListClientCostCode(offset, max, s_option, s_key, o_option, o_desc);
                return result;
            }
            catch (Exception ex)
            {
                // Log Exception
                ExceptionHelper.logException(ex);
                result.IsSuccessful = false;
                result.ErrorMessage = ex.Message;
                return result;
            }
        }