title: JSON.NET JObject key comparison case-insensitive
body: <p>I'm using Newtonsoft Json.net to parse the JSON string. I convert the string into the JObject. When access the value of the element by the key, I want to the comparison is case-insensitive. In the code below, I use "FROM" as the key. I want it returns string "1" at the line json["FROM"].ToString(). But it fails. Is it possible to make the code below work?</p>
  
  <pre><code>String ptString = "{from: 1, to: 3}";
  var json = (JObject)JsonConvert.DeserializeObject(ptString);
  
  String f = json["FROM"].ToString();
  </code></pre>