try
            {

                String sql = " select collmast_no,collmast_desc from lncollmaster where collmast_desc is not null ";
                Sdt d = WebUtil.QuerySdt(sql);
                while (d.Next())
                {
                    //int i = d.GetString("collmast_desc").LastIndexOf("ขนาดที่ดิน");
                    //int y = d.GetString("collmast_desc").LastIndexOf("ไร่");
                    int i = d.GetString("collmast_desc").IndexOf("ขนาดที่ดิน");
                    int y = d.GetString("collmast_desc").IndexOf("ไร่");
                   // y = y - i;

                    string[] c = d.GetString("collmast_desc").Substring(i + 10, y-i-10).Split('-');



                    String sqlupdate = " update lncollmaster set size_rai =" + c[0] + " , size_ngan= " + c[1] + "  , size_wa =" + c[2] + "  where collmast_no like '%" + d.GetString("collmast_no") + "%'  ";
                    WebUtil.QuerySdt(sqlupdate);
                }
                LtServerMessage.Text = " สำเร็จ"; 
            }
            catch (Exception ) { LtServerMessage.Text = " NO สำเร็จ"; }