private void btnEdit_Click(object sender, EventArgs e) { try { if (dataGridViewDonHang.SelectedRows.Count > 0) { int rowSelected = this.dataGridViewDonHang.SelectedRows[0].Index; String orderID = this.dataGridViewDonHang.Rows[rowSelected].Cells["ID"].Value.ToString(); OrderNew frmNew = new OrderNew(); frmNew.editOrder(orderID); frmNew.ShowDialog(this); reloadData(); } } catch (Exception ex) { MessageBox.Show(ex.Message, "ERROR!!!"); } }