title: VB: How do I create nested classes?
body: <p>I would like to write a <em>nested class</em> into an existing class of my own. But I can't find how because I have no idea how this is really called.</p>
  
  <p>What do I mean by nested class? With a table <code>dt</code> from the <code>DataTable</code> class, I can write <code>dt.Columns.add()</code>. <code>Columns</code> would be property of the main class and <code>add</code> would be a method from a nested class.</p>
  
  <p>Any suggestions?</p>