title: extract last 10 elements from xml document
body: <p>i'm trying to extract the last 10 in elements from my xml document, am using this code to parse it :  </p>
  
  <pre><code>slideView.ItemsSource = 
      from channel in xmlItems.Descendants("album") 
      let id = channel.Element("catid")
      let tit = channel.Element("name")
      let des = channel.Element("picture")
      orderby (int) id descending 
      select new onair
      {
          title = tit == null ? null : tit.Value,
          photo = des == null ? null : des.Value,
      };
  </code></pre>
  
  <p>help please :)
  thanks</p>