private void btnLuuThongTin_Click(object sender, EventArgs e)
 {
     try
     {
         if (isInsert)
         {
             int _khoaHocId = 0;
             if (PhongHocLogic.Insert(LoadPhongHoc(), ref _khoaHocId))
             {
                 O2S_Common.Utilities.ThongBao.frmThongBao frmthongbao = new O2S_Common.Utilities.ThongBao.frmThongBao(Base.ThongBaoLable.THEM_MOI_THANH_CONG);
                 frmthongbao.Show();
             }
             else
             {
                 O2S_Common.Utilities.ThongBao.frmThongBao frmthongbao = new O2S_Common.Utilities.ThongBao.frmThongBao(Base.ThongBaoLable.THEM_MOI_THAT_BAI);
                 frmthongbao.Show();
             }
         }
         else
         {
             if (PhongHocLogic.Update(LoadPhongHoc()))
             {
                 O2S_Common.Utilities.ThongBao.frmThongBao frmthongbao = new O2S_Common.Utilities.ThongBao.frmThongBao(Base.ThongBaoLable.CAP_NHAT_THANH_CONG);
                 frmthongbao.Show();
             }
             else
             {
                 O2S_Common.Utilities.ThongBao.frmThongBao frmthongbao = new O2S_Common.Utilities.ThongBao.frmThongBao(Base.ThongBaoLable.CAP_NHAT_THAT_BAI);
                 frmthongbao.Show();
             }
         }
         LoadGridPhongHoc();
     }
     catch (Exception ex)
     {
         O2S_Common.Logging.LogSystem.Error(ex);
     }
 }