字符串反序列化成类的两种方法

 ApiResult<AllowanceEntity> res = JsonConvert.DeserializeObject<ApiResult<AllowanceEntity>>(result.Value);

str = JsonConvert.SerializeObject(obj);

   JavaScriptSerializer Serializer = new JavaScriptSerializer();
                PagePostParam postModel = Serializer.Deserialize<PagePostParam>(value.ToString());

还一个  javascript 里面  添加引用  system.web.extention