public CAUHOIKHAOSAT layCauHoiKhongKhoa()
        {
            List<CAUHOIKHAOSAT> list = new List<CAUHOIKHAOSAT>();
            using (LinQDataContext db = new LinQDataContext(global::DAOAuction.Properties.Settings.Default.webdoantruongConnectionString))
            {
                ISingleResult<CAUHOIKHAOSAT_cauHoiKhongKhoaResult> lp = db.CAUHOIKHAOSAT_cauHoiKhongKhoa();
                foreach (CAUHOIKHAOSAT_cauHoiKhongKhoaResult CAUHOIKHAOSAT in lp)
                {
                    CAUHOIKHAOSAT var1 = new CAUHOIKHAOSAT();
                    var1.MaCauHoiKhaoSat = CAUHOIKHAOSAT.MaCauHoiKhaoSat;
                    var1.NoiDung = CAUHOIKHAOSAT.NoiDung;
                    var1.BiKhoa = CAUHOIKHAOSAT.BiKhoa;

                    list.Add(var1);
                }
                try
                {
                    // Save the changes.
                    db.SubmitChanges();
                }
                // Detect concurrency conflicts.
                catch (ChangeConflictException)
                {
                    // Resolve conflicts.
                    db.ChangeConflicts.ResolveAll(RefreshMode.KeepChanges);
                }
            }
            if (list.Count > 0)
                return list.First();
            else
                return null;
        }