private void TyLEBT() { MTCSYT.SYS_Session session = (MTCSYT.SYS_Session)Session["SYS_Session"]; string madvi = session.User.ma_dviqlyDN; var kh = db.SELECT_TTTT_PT_BT_KHANG(madvi, 0); int t = kh.Rows.Count; if (t != 0) { string tlbt = kh.Rows[0]["PT_BT"] + ""; txtTyLeBT.Text = tlbt; } else { txtTyLeBT.Text = "30"; } }