public override void OnApplyTemplate() { base.OnApplyTemplate(); itemsPresenter = Template.FindName("PART_ItemsPresenter", this) as TimelineItemsPresenter; connectionsPresenter = Template.FindName("PART_ConnectionsPresenter", this) as ConnectionsPresenter; scrollViewer = Template.FindName("PART_ScrollViewer", this) as ScrollViewer; WireScrollViewer(); WireConnectionsPresenter(); }