// test findPOItemByCriteria - POID
        protected void Button1_Click(object sender, EventArgs e)
        {
            PurchaseOrderItemSearchDTO criteria = new PurchaseOrderItemSearchDTO();
            criteria.PurchaseOrderID = Convert.ToInt32(TextBox1.Text.ToString());

            using (PurchaseOrderManager pom = new PurchaseOrderManager())
            {
                List<PurchaseOrderItem> items = pom.FindPurchaseOrderItemByCriteria(criteria);
                GridView1.DataSource = items;
                GridView1.DataBind();
            }
        }
 public List<PurchaseOrderItem> FindPurchaseOrderItemByCriteria(PurchaseOrderItemSearchDTO criteria)
 {
     return purchaseOrderDAO.FindPurchaseOrderItemByCriteria(criteria);
 }