title: Need a sample for WPF TreeView search with Virtualization and Load On Demand
body: <p>I need to implement search feature in WPF <code>TreeView</code>(basically I need to remember the last user selection). I have tried various approaches suggested but nothing works as <code>virtualization</code> is enabled in my <code>TreeView</code> and child nodes are loaded only when a parent node is expanded(lazy loading). </p>
  
  <p>Anyone knows of a sample having these three things(Virtualization, Load-on-demand and Search) implemented together?</p>