static void OnUPCChanged(DependencyObject sender, DependencyPropertyChangedEventArgs e)
{
ActiveInventoryObject me = sender as ActiveInventoryObject;
if (me != null)
{
if (me.UPCChanged != null)
{
me.UPCChanged(me, new ItemChangedEventArgs(e.OldValue, e.NewValue));
}
}
OnChanged(sender, e);
}
