How to deserealize undefined and nested Hashtable structure?

Apr 8, 2013 at 3:46 PM
How to deserealize undefined and nested Hashtable structure with json.net? for example: @"{"a" : {"b" : 1}}"?

Hashtable data = JsonConvert.DeserializeObject<Hashtable>(json_str)

returns Newtonsoft.Json.Linq.JObject at data["a"], instead Hashtable