title: How can I get Expand Collapse Panel?
body: <p>I need a small button and when I press it there should come up a panel with other content inside it. 
  Here is example: <a href="https://gyazo.com/ce158edc3705191e2b733e2f37ea524f" rel="nofollow">https://gyazo.com/ce158edc3705191e2b733e2f37ea524f</a></p>
  
  <p>I'm using windows form application.
  Maybe I should go WPF ?</p>