public string StortJson(string json)

{

      var dic = JsonConvert.DeserializeObject<SortedDictionary<string, object>>(json);

      SortedDictionary<string, object> keyValues = new SortedDictionary<string, object>(dic);

      keyValues.OrderBy(m => m.Key);//升序 把Key换成Value 就是对Value进行排序

      //keyValues.OrderByDescending(m => m.Key);//降序

      return JsonConvert.SerializeObject(keyValues);

}