title: How to get the items from the node WPF treeview?
body: <p>TreeView:</p>
  
  <pre><code>   -MainNode
        -node0
            data01
            -data02
               data021
               data022
            data03
        -node1
            data11
        -node2
            data21
  </code></pre>
  
  <p>Event SelectedChange;</p>
  
  <p>As the choice of a node containing child nodes to get the final data?</p>
  
  <p>For example:
  selected node node0 receive data (data01, data021, data022, data03)</p>