private void simpleButton2_Click(object sender, EventArgs e)
{
InitilizedPOItems();
PoItemsDialog PoItems = new PoItemsDialog(poItems,this);
PoItems.ShowDialog();
}
private void simpleButton4_Click(object sender, EventArgs e)
{
PoItemsDialog PoItems = new PoItemsDialog();
PoItems.ShowDialog();
}