title: How to square items on Listbox
body: <p>Is there a way to <code>square</code> the items on a <code>listbox</code> then the output would go to the other <code>listbox</code></p>
  
  <p>for example I added an item on the <code>listbox</code> using loop</p>
  
  <pre><code>int items;
  items=2;
  do
  {
      listbox1.items.add(items);
      items=items+2;
  } while(items&lt;20);
  </code></pre>