title: datatemplate in place of hierarchialdatatemplate to avoid hierarchy for a particular group
body: <pre>
  Group1
     Item1
     Item2
  NullGroupItem1
  NullGroupItem2
  </pre>
  
  <p>As shown in the structure above, I am trying to use a datatemplate in place of hierarchialdatatemplate in order to avoid the hierarchy in the treelist for a particular group to show nullgroupitems. The issue is that the itemscontrol in the datatemplate behaves like a single item rather than individual treeviewitems.</p>
  
  <p>Please suggest.</p>
  
  <p>Regards,
  John</p>