WPF: Scrolling the screen using the scrollwheel when mouse is over a listbox.

[Telinstryata]

I have a WPF user control with the following...

a) A ListBox on the left of the screen
b) A TextBox on the right of the screen
c) A ScrollViewer around both

When my mouse is over the TextBox and I use the scrollwheel, the TextBox scrolls. When I scroll to the bottom of the TextBox the ScrollViewer then takes over and scrolls.

When my mouse is over the ListBox and I use the scrollwheel, the ListBox scrolls. When I scroll to the bottom of the ListBox the ScrollViewer does not take over and does not scroll.

The following is a little test window that shows this functionality (my real code is far to long to use as an example)

<Window x:Class="Scroll"
    xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
    xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
    Title="Scroll" Height="100" Width="300">
    <Grid>
        <ScrollViewer Name="ScrollViewer1">
            <Grid>
                <Grid.ColumnDefinitions>
                    <ColumnDefinition Width="Auto" />
                    <ColumnDefinition Width="*" />
                </Grid.ColumnDefinitions>
                <ListBox MaxHeight="200" VerticalAlignment="Top" HorizontalAlignment="Left">
                    <ListBoxItem Content="Item 0" FontSize="30" />
                    <ListBoxItem Content="Item 1" FontSize="30" />
                    <ListBoxItem Content="Item 2" FontSize="30" />
                    <ListBoxItem Content="Item 3" FontSize="30" />
                    <ListBoxItem Content="Item 4" FontSize="30" />
                    <ListBoxItem Content="Item 5" FontSize="30" />
                    <ListBoxItem Content="Item 6" FontSize="30" />
                    <ListBoxItem Content="Item 7" FontSize="30" />
                </ListBox>
 
                <TextBox Height="200" Grid.Column="1" TextWrapping="Wrap" FontSize="30"
                         VerticalScrollBarVisibility="Auto">This is some text used to fill up the text box with small words. blah blah blah blah blah.</TextBox>
            </Grid>
        </ScrollViewer>
    </Grid>
</Window>
 

Is there any way to get the scroll event on the ListBox to be passed onto the ScrollViewer just like it is with the TextBox