center window don't work

[PepiBobanov]

center window don't work

[PepiBobanov]

It become Help yourself thing :)
window.SizeChanged += (s, e) => CenterOwner(window);

    private void CenterOwner( Window w)
    {
        if (w.Owner != null)
        {
            double top = w.Owner.Top + ((w.Owner.Height - w.ActualHeight) / 2);
            double left = w.Owner.Left + ((w.Owner.Width - w.ActualWidth) / 2);

            w.Top = top < 0 ? 0 : top;
            w.Left = left < 0 ? 0 : left;
        }
    }