Present ListBox Items Bottom-to-Top

Question

I\'ve searched for quite a while trying to find an answer to this without any results.

The default WPF Listbox adds items aligned at the top, and additional items be

Answer 1

Change the ItemsPanel's layout:

<ListBox.ItemsPanel>
    <ItemsPanelTemplate>
        <VirtualizingStackPanel VerticalAlignment="Bottom"/>
    </ItemsPanelTemplate>
</ListBox.ItemsPanel>

This does what your image seems to imply, with the first item added still on top. If you want to reverse the order as well that would be a different issue.