private void bPrint_Click(object sender, EventArgs e)
 {
     oPacking.OpenPrinter(1);
     oPacking.Print();
     oPacking.ClosePrinter();
 }
 private void bPrint_Click(object sender, EventArgs e)
 {
     oOrder.OpenPrinter(1);
     oOrder.Print();
     oOrder.ClosePrinter();
 }