//display new order form once click
private void OderListGridView_RowHeaderMouseClick(object sender, DataGridViewCellMouseEventArgs e)
{
int bid = int.Parse(this.OderListGridView.CurrentRow.Cells[0].Value.ToString());
NewOrderForm bkf = new NewOrderForm(bid);
bkf.ShowDialog();
}
// open new order form
private void ButtonNewOder_Click(object sender, EventArgs e)
{
NewOrderForm nof = new NewOrderForm();
nof.Show();
}