Scrolling a TextBlock

Question

I have a TextBlock and a Textbox in the same location. Depending on what mode the user is in, I make one visible and the other collapsed. This is working fine, but how can I make the Textblock scrollable? I figured I should use a ScrollViewer, but I don't know why it's not working. I've tried messing around with the height (auto and fixed), but it won't scroll. My xaml is this:

<ScrollViewer x:Name="detailsScroller" Height="285" Width="480"  Canvas.Top="76" HorizontalScrollBarVisibility="Auto" VerticalScrollBarVisibility="Auto">
    <Canvas x:Name="infoCanvas" Width="478"  >
     <TextBlock x:Name="textblockInfo" TextWrapping="Wrap"  Width="462" Height="197"  Canvas.Left="8"/>
     <TextBox x:Name="textboxInfo" TextWrapping="Wrap"  Width="478" AcceptsReturn="True" Height="300" Visibility="Collapsed" />
    </Canvas>
</ScrollViewer>

Thanks!

Answer 1

Don't put a height in the textbox. This worked perfectly for me:

    <ScrollViewer Height="192" HorizontalAlignment="Left" Margin="12,34,0,0" Name="scrollViewer1" VerticalAlignment="Top" Width="404">
        <TextBlock VerticalAlignment="Top"  Name="textBlock1" Text="TextBlock" Width="378" TextWrapping="Wrap" />
    </ScrollViewer>