private void btMonCu_Click(object sender, EventArgs e)
        {
            FQlyMonCu MenuMonCu = new FQlyMonCu();

            MenuMonCu.FormClosing += MenuMonCu_FormClosing;
            MenuMonCu.ShowDialog();
        }
        private void btLuuLai_Click_1(object sender, EventArgs e)
        {
            DialogResult traloi;

            traloi = MessageBox.Show("Bạn có muốn lưu lại món cũ", "Trả lời", MessageBoxButtons.YesNo, MessageBoxIcon.Question);
            if (traloi == DialogResult.Yes)
            {
                string active = "Yes";
                string tt;
                if (lbTrangThai.Text == "Hiện có")
                {
                    tt = "Yes";
                }
                else
                {
                    tt = "No";
                }
                cFood.UpdateFood(Convert.ToInt32(Id), lbTen.Text, Convert.ToInt32(lbGia.Text), tt, Convert.ToInt32(lbGiamGia.Text), active, lbLoai.Text);
                FQlyMonCu qlyMonCu = (FQlyMonCu)this.ParentForm;
                qlyMonCu.Reload();
            }
        }