Mouse scroll not working in a scroll viewer with a wpf datagrid and additional UI elements

Question

I am trying to figure out how to get the mouse scroll working on a wpf window with a scrollviewer and a datagrid within it. The WPF and C# code is below

Answer 1

An improvement to Don B's solution is to avoid using ScrollToVerticalOffset.

scv.ScrollToVerticalOffset(scv.VerticalOffset - e.Delta);

VerticalOffset - Delta results in a pretty jarring experience. The ScrollViewer puts a lot of thought into making the movement smoother than that. I think it also scales the delta down based on dpi and other factors...

I found it's better to catch and handle the PreviewMouseWheelEvent and send a MouseWheelEvent to the intended ScrollViewer. My version of Don B's solution looks like this.

private void ScrollViewer_PreviewMouseWheel(object sender, MouseWheelEventArgs e)
{
    var eventArg = new MouseWheelEventArgs(e.MouseDevice, e.Timestamp, e.Delta);
    eventArg.RoutedEvent = UIElement.MouseWheelEvent;
    eventArg.Source = e.Source;

    ScrollViewer scv = (ScrollViewer)sender;
    scv.RaiseEvent(eventArg);
    e.Handled = true;
}