title: How to return List<int> from domain service
body: <p>Hello guys im using WCF RIA Services i have domain services where i wrote this method</p>
  
  <pre><code>public List&lt;int&gt; GetActionIDs() 
      {
          return (from d in ObjectContext.actions select d.id).ToList();
      }
  </code></pre>
  
  <p>How i can get this List in client side?
  This does not works : </p>
  
  <pre><code>List&lt;int&gt; = db.GetActionIDs();
  </code></pre>
  
  <p>any suggestions? </p>