refreshing a WPF window on demand

问题

I noticed that if I move my WPF window through code, I will only see that changes when the window refreshes (if I minimize and then maximize it).
Is it possible to refresh the GUI of a WPF on demand?

EDIT: I'm actually trying to make this window follow another window.

So I'm hooking to the other window's events:

    m_wndParent = parent;
    this.Owner = m_wndParent;
    m_wndParent.SizeChanged += ParentSizeChanged;
    m_wndParent.LayoutUpdated += ParentLocationChanged;

and then I change my window's position:

   private void ParentLocationChanged(object sender, EventArgs e)
        {
            Window parent = sender as Window;
            this.Top = parent.Top;
            this.Left = parent.Left;
            this.UpdateLayout();
        }

回答1:

You should add your ParentLocationChanged handler to the LocationChanged event instead of LayoutUpdated (which serves a completely different purpose).

m_wndParent.LocationChanged += ParentLocationChanged;

private void ParentLocationChanged(object sender, EventArgs e)
{
    var parent = sender as Window;
    Top = parent.Top;
    Left = parent.Left;
}

回答2:

You should hook up parent.LocationChanged and then call InvalidateVisual. See MSDN for more details.

来源：https://stackoverflow.com/questions/14182829/refreshing-a-wpf-window-on-demand