title: Scroll WPF Listview to specific line
body: <p>WPF, Browserlike app.<br>
  I got one page containing a ListView. After calling a PageFunction I add a line to the ListView, and want to scroll the new line into view:</p>
  
  <pre><code>  ListViewItem item = ItemContainerGenerator.ContainerFromIndex(index) as ListViewItem;
    if (item != null)
      ScrollIntoView(item);
  </code></pre>
  
  <p>This works. As long as the new line is in view the line gets the focus like it should.</p>
  
  <p>Problem is, things don't work when the line is not visible.<br>
  If the line is not visible, there is no ListViewItem for the line generated, so ItemContainerGenerator.ContainerFromIndex returns null.</p>
  
  <p>But without the item, how do I scroll the line into view? Is there any way to scroll to the last line (or anywhere) without needing an ListViewItem?</p>