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?

Did you try giving it a header? – paparazzo Nov 13 '12 at 18:23 — paparazzo, Nov 13 '12 at 18:23

score 6 · Accepted Answer · answered Nov 13 '12 at 19:16

6

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.

answered Nov 13 '12 at 19:16

Federico Berasategui

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That worked, thanks. But I used BringIntoView(Rect), because BringIntoView() brings into view only its header. – Stanislav Serov Nov 13 '12 at 20:51

Scrolling a ScrollViewer when Expander is expanded

1 Answers1