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

I tried Don B's solution and it's solves the issue with scrolling over a data grid pretty well for the cases when you don't have other inner scrollable controls.

For the case when the scroll viewer has as children other scrollable controls and a data grid, then that requires that the event shouldn't be marked as handled at the end of the event handler for the main scroll viewer so it could be catched also in the inner scrollable controls, however that has the side effect that when the scroll should occur only on the inner scrollable control, it will also occur on the main scroll viewer.

So I've updated Dave's solution with the difference for how the scroll viewer is found so it won't be necessary to know the name of the scroll viewer:

private void DataGrid_PreviewMouseWheel(object sender, MouseWheelEventArgs e)
{
    ScrollViewer scrollViewer = (((DependencyObject)sender).GetVisualParent());
    scrollViewer.ScrollToVerticalOffset(scrollViewer.VerticalOffset - e.Delta);
}