title: Include class Name in WCF Json Serialization
body: <p>This must be trivial but I can't seem to get it done. Given the following data contract class:</p>
  
  <pre><code>public class SampleItem
  {
      public int Id { get; set; }
      public string StringValue { get; set; }
  }
  </code></pre>
  
  <p>when deserialized to JSON by my WCF service, provides the following output:</p>
  
  <pre><code>[{"Id":1,"StringValue":"Hello"}]
  </code></pre>
  
  <p>Is there any way to include the class name too? i.e.:</p>
  
  <pre><code>"SampleItem": [{"Id":1,"StringValue":"Hello"}]
  </code></pre>