Bubbling scroll events from a ListView to its parent

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You need to capture the preview mouse wheel event in the inner listview

MyListView.PreviewMouseWheel += HandlePreviewMouseWheel;

Or in the XAML

<ListView ... PreviewMouseWheel="HandlePreviewMouseWheel">

then stop the event from scrolling the listview and raise the event in the parent listview.

private void HandlePreviewMouseWheel(object sender, MouseWheelEventArgs e) {
    if (!e.Handled) {
        e.Handled = true;
        var eventArg = new MouseWheelEventArgs(e.MouseDevice, e.Timestamp, e.Delta);
        eventArg.RoutedEvent = UIElement.MouseWheelEvent;
        eventArg.Source = sender;
        var parent = ((Control)sender).Parent as UIElement;
        parent.RaiseEvent(eventArg);
    }
}

Creds go to @robert-wagner who solved this for me a few months ago.

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