title: C#: In a KeyDown event, what should I use to check what key is down?
body: <p>In a KeyDown event, I have the KeyEventArgs to work with. It has (among other things) these three properties:</p>
  
  <ul>
  <li><code>e.KeyCode</code></li>
  <li><code>e.KeyData</code></li>
  <li><code>e.KeyValue</code></li>
  </ul>
  
  <p>Which one should I use for what?</p>