title: how to send a collection/array to mvc action via ajax
body: <p>atm I'm trying like this, but no luck, I get null in my Do action</p>
  
  <pre><code>var arr = [31,17,16];
  
  $.get('&lt;%=Url.Action("Do", "Foo") %&gt;', 
         {ids:arr},
         function(d){...});
  
  public ActionResult Do(IEnumerable&lt;int&gt; ids)
  {
  ...
  }
  </code></pre>