private void dgvMon_CellMouseDoubleClick(object sender, DataGridViewCellMouseEventArgs e)
        {
            //if (dgvMon.RowCount.ToString() == "0")
            //{
            //    MessageBox.Show("Dữ liệu trống", "Cảnh báo");
            //    return;
            //}
            //btnLuu.Enabled = true;
            //btnHuy.Enabled = true;
            //tenMon = dgvMon.CurrentRow.Cells[1].Value.ToString().Trim();
            ////tongNguyenLieu = int.Parse(dgvMon.CurrentRow.Cells[2].Value.ToString().Trim());
            //calo = double.Parse(dgvMon.CurrentRow.Cells[3].Value.ToString().Trim());
            //ManhomMon = int.Parse(dgvMon.CurrentRow.Cells[4].Value.ToString());
            //nhomMon = db.NHOMMONs.Find(ManhomMon).TenNhom.ToString().ToLower();
            //frmChiTietMonAn monAn = new frmChiTietMonAn();
            //monAn.ShowDialog();
            maMon  = int.Parse(dgvMon.CurrentRow.Cells[0].Value.ToString().Trim());
            tenMon = dgvMon.CurrentRow.Cells[1].Value.ToString().Trim();
            IDMON  = maMon;
            var x = db.CONGTHUCMONs.Where(s => s.IDMon == IDMON)
                    .Select(s => s.IDNL);
            var y = db.CONGTHUCMONs.Where(s => s.IDMon == IDMON)
                    .Select(s => s.LieuLuong);

            lsLieuLuong    = y.ToList();
            lsMaNguyenLieu = x.ToList();
            frmChiTietCongThuc frm = new frmChiTietCongThuc();

            frm.ShowDialog();
        }
        private void dgvCongThucMon_CellDoubleClick(object sender, DataGridViewCellEventArgs e)
        {
            maMon  = int.Parse(dgvCongThucMon.CurrentRow.Cells[0].Value.ToString().Trim());
            tenMon = dgvCongThucMon.CurrentRow.Cells[1].Value.ToString().Trim();
            IDMON  = int.Parse(dgvCongThucMon.CurrentRow.Cells[0].Value.ToString().Trim());
            var x = db.CONGTHUCMONs.Where(s => s.IDMon == IDMON)
                    .Select(s => s.IDNL);
            var y = db.CONGTHUCMONs.Where(s => s.IDMon == IDMON)
                    .Select(s => s.LieuLuong);

            lsLieuLuong    = y.ToList();
            lsMaNguyenLieu = x.ToList();
            frmChiTietCongThuc frm = new frmChiTietCongThuc();

            frm.ShowDialog();
        }