private void btnThem_Click(object sender, EventArgs e)
{
if (ThongTinThucDonBLL.themMonAnTrongBangMonAn(tableMonAn, cboTenMonAn.Text.ToString().Trim()))
{
lblTongNangLuong.Text = ThongTinThucDonBLL.getTongNangLuong(dgvMonAn) + "(Kcal)";
}
}
