title: Convert datatable to json format
body: <p>I have to convert Data table to JSON format at vb.net. I have written the code for that, but, I want in another format.
  I have added the dll NewtonSoft.json and fill datatable from database for that,
  The code I have written...
  ''''My dt is filled with data. I have written code in web service</p>
  
  <pre><code>Dim jsonString As String = JsonConvert.SerializeObject(dt)
  </code></pre>
  
  <p>I get the output like -</p>
  
  <pre><code>{"people":[{"ref":"108414","first_name":"George","last_name":"Buss","display_name":"George Buss","title":"Director of Experience &amp; Education","organization_name":"Minnetrista","bio":"","address":"","city":null,"state":"IN","zipcode":"","country":"United States","phone_work":"","email":"","website":"","tags":"[Speaker,Attendees]","presenter_at":"[2307,8976]","organization_ref":"36441"}] }
  </code></pre>
  
  <p>but The <code>"tags"</code> value <code>"[Speaker,Attendees]"</code> in place of this i need in 
  <code>"tags":["Speaker","Attendees"]</code> and same for presenter_at also</p>
  
  <p>From my code I have directly taken datatable and convert it into json. But for this I think  to modified json data because this data not static it comes from a database. And I will change person by person. Does anyone know the solution, Please help me with this.
  Thanks in advanced.</p>