private void btnTaoBanNang_ItemClick(object sender, DevExpress.XtraBars.ItemClickEventArgs e)
        {
            frmTaoBanNang frm = new frmTaoBanNang();

            frm.ShowDialog();
            if (frm.s_NewID != "")
            {
                if (SqlConn == null || SqlConn.State != ConnectionState.Open)
                {
                    Database.Open(ref this.SqlConn);
                }
                if (SqlConn.State == ConnectionState.Open)
                {
                    try
                    {
                        DsBanNang ds = new DsBanNang();
                        ds.Insert(SqlConn, frm.s_NewID, frm.s_KyThuatVien, frm.s_NoiDungHienThi);
                    }
                    catch
                    {
                        MessageBox.Show("Xử lý lỗi !", "Lỗi");
                    }
                    finally
                    {
                        CapNhatDuLieuGridView();
                    }
                }
            }
        }
        private void btnSuaBanNang_ItemClick(object sender, DevExpress.XtraBars.ItemClickEventArgs e)
        {
            string s_IDBanNang = "";

            try
            {
                s_IDBanNang = grvBanNang.GetRowCellValue(grvBanNang.FocusedRowHandle, "maql").ToString();

                frmTaoBanNang frm = new frmTaoBanNang(s_SerialPort, SqlConn, true, s_IDBanNang);
                frm.ShowDialog();
            }
            catch
            {
                MessageBox.Show("Xử lý lỗi !", "Lỗi");
            }
            finally
            {
                CapNhatDuLieuGridView();
            }
        }