Json转Hashtable的转换

json 转换为Hashtable

        /// <summary>

        /// Json转Hashtable

        /// </summary>

        /// <param name="json"></param>

        /// <returns></returns>

        public static Hashtable Json2Hashtable(string json)

        {

            return JsonConvert.DeserializeObject<Hashtable>(json);

        }    

Json数组转Hashtable

　　   /// <summary>

        ///  Json转Hashtable

        /// </summary>

        /// <typeparam name="T"></typeparam>

        /// <param name="json"></param>

        /// <returns></returns>

        public static List<T> Json2ListHashtable<T>(string json)

        {

            return JsonConvert.DeserializeObject<List<T>>(json);

        }

dataSet 反序列化成  json 

        /// <summary>

        /// 将dataset 换换为join 字符串

        /// </summary>

        /// <param name="ds"></param>

        /// <returns></returns>

        public string toSimpleJson(DataSet ds)

        {

            Newtonsoft.Json.Converters.IsoDateTimeConverter timeConverter = new Newtonsoft.Json.Converters.IsoDateTimeConverter();

            timeConverter.DateTimeFormat = "yyyy'-'MM'-'dd' 'HH':'mm':'ss'.'fff";

            string result = JsonConvert.SerializeObject(ds, timeConverter);

            return result;

        }

使用上面的方法 必须引用 ：Newtonsoft.Json