title: Check JSON and XML is valid? c#
body: <p>Im using newtonsoft json.net <a href="http://json.codeplex.com/" rel="noreferrer">http://json.codeplex.com/</a> and I would like to know ...</p>
  
  <p>how  to validate json and xml are valid json/xml.</p>
  
  <p>how do i verify this?</p>