private void dataGrid1_CurrentCellChanged(object sender, EventArgs e)
        {
            string barCode = string.Empty;
            int row = dataGrid1.CurrentRowIndex;
            int col = dataGrid1.CurrentCell.ColumnNumber;

            int iRow;
            int iCol;
            DataTable myTable;
            bool gotoback = false;

            myTable = (DataTable)dataGrid1.DataSource;
            for (iRow = 0; iRow < myTable.Rows.Count; iRow++)
            {
                if (row == iRow)
                {
                    for (iCol = 0; iCol < myTable.Columns.Count; iCol++)
                    {
                        barCode = Convert.ToString(dataGrid1[iRow, 1]);

                        break;

                    }
                }

            }

            if (col == 2) {

                if (MessageBox.Show("�س��ͧ���ź�������Ţ��� :" + barCode + " ��������� ?", "���׹�ѹ", MessageBoxButtons.YesNo, MessageBoxIcon.None, MessageBoxDefaultButton.Button1) == System.Windows.Forms.DialogResult.Yes)
                {
                    ProductService service = new ProductService();
                    bool delete = service.deleteDocCheckProduct(barCode);
                    if (delete)
                    {
                        MessageBox.Show("ź���������º�������� !!! ", "����͹");
                        Console.WriteLine(" Delete Sueess");
                        loadData();
                        return;
                    }
                }
                else
                {
                    return;
                }
            }
        }