title: stack oftype<> option how to work
body: <p>Can anyone tell me how to use <code>stack.ofType&lt;&gt;</code>? I have tried many times but can't do this.</p>
  
  <pre><code>private void button2_Click(object sender, EventArgs e)
  {
      Stack st = new Stack();
      st.Push("joginder");
      st.Push("singh");
      st.Push("banger");
      st.Push("Kaithal");
      st.OfType&lt;&gt;  //how to work this option
  }
  </code></pre>