How to add a scroll bar to the expander panel?

Question

I have a stack pane inside the expander pane that I add programmatically. Currently, the exanpander stops at the bottom of the form, but the stack panel continues to grow. I would like the stack panel to be limited by the expander and scroll to display the checkboxes. Do I need to check the boxes in the list box to get scroll functionality?

<Grid> <Expander Header="Expander1" Margin="0,0,0,2" Name="Expander1" VerticalAlignment="Top" Background="Coral"> <StackPanel Name="StackScroll" Margin="0,0,0,2" Background="Aqua"></StackPanel> </Expander> </Grid> 

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Answer 1

You can nest a StackPanel in a ScrollViewer:

  <Grid> <Expander Header="Expander1" Margin="0,0,0,2" Name="Expander1" VerticalAlignment="Top" Background="Coral"> <ScrollViewer VerticalScrollBarVisibility="Auto"> <StackPanel Name="StackScroll" Margin="0,0,0,2" Background="Aqua"> </StackPanel> </ScrollViewer> </Expander> </Grid> 

Answer 2

Set ScrollViewer.VerticalScrollBarVisibility = "Auto" in the StackPanel declaration.