Silverlight: Difficulty with ScrollViewer?

I do not see the reason why you would need the ListBox to be embedded within the ScrollViewer. If your ListBox has more items than it display in the viewable area, the ListBox items should scroll by themselves. If you edit the ListBox's style using Expression Blend, the style will look like this.

It(Scrolling) is working perfectly after I set the Height of the list box.

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