static public string queryAllOutflow(int storeID, ref int outflowTotalPage, ref int outflowCurrentPage, out string msg, out decimal money)
        {
            money = 0m;
            List <Dictionary <string, string> > list = OutflowDAL.QueryAllByStoreID(storeID, out msg);

            if (list == null)
            {
                outflowTotalPage   = 0;
                outflowCurrentPage = -1;
                return(null);
            }
            msg = null;
            foreach (Dictionary <string, string> d in list)
            {
                money += decimal.Parse(d["price"]) * decimal.Parse(d["quantity"]);
            }
            outflowTotalPage = (int)System.Math.Floor((decimal)(list.Count / 10));
            if (list.Count != 0 && list.Count % 10 == 0)
            {
                --outflowTotalPage;
            }
            if (outflowCurrentPage < outflowTotalPage)
            {
                ++outflowCurrentPage;
            }
            try
            {
                return(JsonConvert.SerializeObject(list.GetRange(outflowCurrentPage * 10, 10)));
            }
            catch
            {
                return(JsonConvert.SerializeObject(list.GetRange(outflowCurrentPage * 10, list.Count - outflowCurrentPage * 10)));
            }
        }
        static public string ExportOutflow(int storeID, out string msg, out decimal money)
        {
            money = 0m;
            List <Dictionary <string, string> > list = OutflowDAL.QueryAllByStoreID(storeID, out msg);

            if (list == null)
            {
                msg = "没有需要导出的记录";
                return(null);
            }
            msg = null;
            foreach (Dictionary <string, string> d in list)
            {
                money += decimal.Parse(d["price"]) * decimal.Parse(d["quantity"]);
            }
            return(JsonConvert.SerializeObject(list));
        }