title: MVC which submit button has been pressed
body: <p>I have two buttons on my MVC form:</p>
  
  <pre><code>&lt;input name="submit" type="submit" id="submit" value="Save" /&gt;
  &lt;input name="process" type="submit" id="process" value="Process" /&gt;
  </code></pre>
  
  <p>From my Controller action how do I know which one have been pressed?</p>