title: Silverlight synchronous calls to the wcf
body: <p>I'm trying to make calls sync. But silverlight app locks itself when calling endList method. In a simple console app i can make async to sync. Could not see the problem.</p>
  
  <pre><code>  var svc = new WcfServiceClient();
    var ar = svc.BeginList(null, null);
    var result = svc.EndList(ar); &lt;-- Silverlight hangs here
    listBox.ItemsSource = result;
  </code></pre>