Silverlight: Make ListBox big enough to fit all content?

I have a 开发者_Go百科ListBox with enough items that it makes a vertical scrollbar visible. How can I make the list box automatically grow in height so it can display all items at once, without scrolling?

Thanks.

The problem is that at the core of the ListBox template is this Xaml:-

<Border CornerRadius="2" BorderBrush="{TemplateBinding BorderBrush}" BorderThickness="{TemplateBinding BorderThickness}">
    <ScrollViewer x:Name="ScrollViewer" Padding="{TemplateBinding Padding}" Background="{TemplateBinding Background}" BorderBrush="Transparent" BorderThickness="0" TabNavigation="{TemplateBinding TabNavigation}">
        <ItemsPresenter />
    </ScrollViewer>
</Border>

The ScrollViewer makes what you want to do quite difficult. The solution is to (assuming you really need a ListBox specifically) is to re-template the ListBox. Adjust the above portion of the template to:-

<Border CornerRadius="2" BorderBrush="{TemplateBinding BorderBrush}" BorderThickness="{TemplateBinding BorderThickness}" Background="{TemplateBinding Background}">
    <ItemsPresenter />
</Border>

You would probably want to use StackPanel as the items panel as well.

However if you don't need the selection features of ListBox then a simple ItemsControl would do it.

You have to make sure it's container will give it enough space. If the container for the ListBox is a Grid with fixed width and height then it will give the ListBox a fixed size. When the height of the items exceeds that size then the scroll bar will become visible. If you put the ListBox in a StackPanel the StackPanel will give the ListBox infinite size. You still have to make sure the size of the StackPanel is unbounded though.