private DataTable GetPagedDataTable(int pageIndex, int pageSize)
        {
            DataSet   ds     = bll.DataSet清查盘点();
            DataTable dt     = ds.Tables[0].Copy();//复制一份table
            DataTable source = dt;
            DataTable paged  = source.Clone();

            int rowbegin = pageIndex * pageSize;
            int rowend   = (pageIndex + 1) * pageSize;

            if (rowend > source.Rows.Count)
            {
                rowend = source.Rows.Count;
            }

            for (int i = rowbegin; i < rowend; i++)
            {
                paged.ImportRow(source.Rows[i]);
            }

            return(paged);
        }