public static int Delete(PurchaseOrder PO)
{
foreach (PurchaseOrderItem POI in PO.PurchaseOrderItems)
{
POI.Delete();
}
DBAccess db = new DBAccess();
db.AddInt("ID", PO.ID);
int retval = db.ExecuteNonQuery(_SQLDelete);
AddLog(Status: "PurchaseOrder", Logtext: string.Format("Delete PurchaseOrder: ID:{0}", PO.ID), Metode: "Delete");
return(retval);
}