title: VB.NET How to add a child node to a specific node in treeview
body: <p>How to add a child node to a specific node in treeview? Say I have "Item1" in treeview already, how do I add "SubItem1" to "Item1" as it's child node?</p>
  
  <p>I know its probably really simple, but i tried lots of stuff, i just cant get it working.</p>