title: Ignore Json data when property is missing
body: <p>I tried to get the id Field</p>
  
  <pre><code>dynamic post = fb.Get("/" + radListControl2.SelectedItem + "/feed?fields=message");
  
  int count = (int)post.data.Count;
  
  for (int i = 0; i &lt; count; i++)
  {
      radListControl1.Items.Add(Convert.ToString(post.data[i].id));
  }
  </code></pre>
  
  <p>It work and return this:</p>
  
  <pre><code>{
    "data": [
      {
        "id": "5xxx269_10151xxx50270", 
        "created_time": "2013-05-24T12:52:24+0000"
      }, 
      {
        "id": "5xxx69_101515xxxx270", 
        "created_time": "2013-05-21T19:57:57+0000"
      }, 
      {
        "message": "xxxxx", 
        "id": "xxx_1015157xxx270", 
        "created_time": "2013-05-21T19:44:07+0000"
      }, 
      {
        "id": "xxx", 
        "created_time": "2013-05-21T19:28:32+0000"
      }, 
      {
        "id": "5xx69_1015xxx75270", 
        "created_time": "2013-05-19T22:02:24+0000"
      }, 
      {
        "id": "52xxx269_1xxxx40270", 
        "created_time": "2013-05-18T09:31:42+0000"
      }, 
      {
        "message": "xxxx", 
        "id": "xxxx", 
        "created_time": "2013-05-17T22:59:49+0000"
      }, 
  </code></pre>
  
  <p>id xxx is inserted in radlistbox, but this code returns the same list</p>
  
  <pre><code>int count = (int)post.data.Count;
  
  for (int i = 0; i &lt; count; i++)
  {
      radListControl1.Items.Add(Convert.ToString(post.data[i].message));
  }
  </code></pre>
  
  <p>but radlistbox is empty, i need only field Message can you help me please?</p>