private void btCTDH_Click(object sender, EventArgs e) { ma_donhang = int.Parse(dgvDonhang.Rows[dgvDonhang.CurrentCell.RowIndex].Cells["ma_donhang"].Value.ToString()); ChiTietDonHang_Form frm = new ChiTietDonHang_Form(ma_donhang); frm.ShowDialog(); LoadData(); }