Scrolling a ScrollViewer when Expander is expanded

Question

I have a WPF MVVM application, in which ScrollViewer contains a user control with multiple Expanders

<UserControl>   
    <Expander>
        <Grid>
            <Grid.RowDefinitions>
                <RowDefinition />
                <RowDefinition />
                ...               
            </Grid.RowDefinitions>

            <Expander Grid.Row="0" />

            <Expander Grid.Row="1" />
            ... 

        </Grid>
    </Expander>
</UserControl>

How could I make expanded Expander to scroll into view so it's content is visible?

Answer 1

Handle the Expanded.Expanded event in the code behind of the usercontrol and then call `Expander.BringIntoView()'.

Note: there's nothing wrong with using code behind for VIEW-specific things, and thus this does not break MVVM, IMO.