title: Tree view with parent node automatically checks all its children
body: <p>I need a tree view with <strong>parent node</strong> automatically checks all its <strong>children</strong> in tree view.</p>
  
  <p>I have     </p>
  
  <pre><code>TreeView1.ShowCheckBoxes = TreeNodeTypes.All;
  </code></pre>
  
  <p>Can anyone help me..</p>
  
  <p>Thanks in advance...</p>