DynamicUtils.cs

// Method for converting a Json.NET object into a dynamic CLR object.
// http://groups.google.com/group/mongodb-csharp/browse_thread/thread/ef1308f38bdbde3e
public static class DynamicUtils
    {
        public static object ConvertJTokenToObject(JToken token)
        {
            if (token is JValue)
            {
                return ((JValue)token).Value;
            }
            if (token is JObject)
            {
                ExpandoObject expando = new ExpandoObject();
                (from childToken in ((JToken)token) where childToken is
JProperty select childToken as JProperty).ToList().ForEach(property =>
                {
                    ((IDictionary<string,
object>)expando).Add(property.Name, ConvertJTokenToObject(property.Value));
                });
                return expando;
            }
            if (token is JArray)
            {
                object[] array = new object[((JArray)token).Count];
                int index = 0;
                foreach (JToken arrayItem in ((JArray)token))
                {
                    array[index] = ConvertJTokenToObject(arrayItem);
                    index++;
                }
                return array;
            }
            throw new ArgumentException(string.Format("Unknown token type
'{0}'", token.GetType()), "token");
        }
    }