title: scroll down a list box automatically
body: <p>On a grid, i have a ListBox and a button. If the button is clicked, an item is added to the listbox.</p>
  
  <p>The problem i'm trying to fix is that after the item is added, it is not focused.</p>
  
  <p>I want to automatically scroll down the listbox so that an user can see the item that is lately added. Any thought?</p>