LitJSON

官网
http://litjson.sourceforge.net/
http://sourceforge.net/projects/litjson/files/

public class json
{      
        /// <summary>
        /// 序列化
        /// </summary>
        /// <param name="obj"></param>
        /// <returns></returns>
        public static string objtojson(object obj)
        {
            return JsonMapper.ToJson(obj);
        }
        /// <summary>
        /// 反序列化
        /// </summary>
        /// <typeparam name="T"></typeparam>
        /// <param name="data"></param>
        /// <returns></returns>
        public static T jsontoobj<T>(string data)
        {
           return JsonMapper.ToObject<T>(data); 
        } 
}