<igDock:XamDockManager Name="xamDockManager1" >
            <igDock:XamDockManager.Panes>
                <igDock:SplitPane Height="200" Name="xamMyPane" igDock:XamDockManager.InitialLocation="DockedBottom">
                    <igDock:ContentPane Header="myContentPane">
                        <local:UserControlMyUserControl x:Name="MyUserControl"/>
                    </igDock:ContentPane>
                </igDock:SplitPane>
            </igDock:XamDockManager.Panes>

then in code behind in window closing event:

IEnumerable<ContentPane> panes = this.xamDockManager1.GetPanes(PaneNavigationOrder.VisibleOrder);
            panes.ToList().ForEach(x =>
                {

                    Debug.WriteLine(x.Name);
                });

All names are blank. Yet x is still equal to the valid pane (header properties, etc.)