ExtJs JsonHelper Json序列化与反序列化

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Web.Script.Serialization;
using System.Runtime.Serialization.Json;
using System.Reflection;

namespace CommonHelper
...{
    public static class JSONHelper
    ...{
        /**//// <summary>
        /// 返回本对象的Json序列化
        /// </summary>
        /// <param name="obj"></param>
        /// <returns></returns>
        public static string ToJSON(this object obj)
        ...{            
            JavaScriptSerializer serializer = new JavaScriptSerializer();
            var st = serializer.Serialize(obj).Replace(""", "'");
            return st;
        }

        /**//// <summary>
        /// 返回对象序列化
        /// </summary>
        /// <param name="obj">源对象</param>
        /// <param name="selfName">数据源节点名称</param>
        /// <param name="others">其它节点对象</param>
        /// <returns></returns>
        public static string ToJSON(this object obj, string selfName, object others)
        ...{
            JavaScriptSerializer serializer = new JavaScriptSerializer();
            serializer.MaxJsonLength = int.MaxValue;
            SortedList<string, object> data = new SortedList<string, object>();
            data.Add(selfName, obj);
            PropertyInfo[] pis = others.GetType().GetProperties();
            foreach (PropertyInfo pi in pis)
            ...{
                data.Add(pi.Name,pi.GetValue(others,null));
            }
            return serializer.Serialize(data).Replace(""", "'");
        }

        /**//// <summary>
        /// 对象序列化
        /// </summary>
        /// <param name="obj">源对象</param>
        /// <param name="selfName">源节点名称</param>
        /// <returns></returns>
        public static string ToJSON(this object obj, string selfName)
        ...{
            JavaScriptSerializer serializer = new JavaScriptSerializer();

            SortedList<string, object> data = new SortedList<string, object>();
            data.Add(selfName, obj);
            string s = data.ToJSON();
            return s.Replace(""", "'");
        }

        /**//// <summary>
        /// 对象序列化
        /// </summary>
        /// <param name="obj">源对象</param>
        /// <param name="recursionDepth">获取或设置用于约束要处理的对象级别的数目的限制,默认值为 100;该属性设置为小于 1 的值时将引发System.ArgumentOutOfRangeException</param>
        /// <returns></returns>
        public static string ToJSON(this object obj, int recursionDepth)
        ...{
            JavaScriptSerializer serializer = new JavaScriptSerializer();
            serializer.RecursionLimit = recursionDepth;
            return serializer.Serialize(obj).Replace(""", "'");
        }

        /**//// <summary>
        /// 将本JSON字符串反序列化为对象
        /// </summary>
        /// <typeparam name="T">返序列化类型</typeparam>
        /// <param name="json">Json字符串</param>
        /// <returns></returns>
        public static T DeJSON<T>(this string json)
        ...{
            JavaScriptSerializer serializer = new JavaScriptSerializer();
            return serializer.Deserialize<T>(json);
        }
    }
}