csharp:.net 3.5 using System.Runtime.Serialization.Json read json

using System;
using System.Collections.Generic;
using System.Linq;
using System.Web;
using System.Web.UI;
using System.Web.UI.WebControls;
//http://msdn.microsoft.com/zh-cn/library/system.runtime.serialization.datacontractattribute.aspx
//using System.Web.Script.Serialization;
using System.Text;
using System.IO;
using System.Runtime;
using System.Runtime.Serialization;// 添加 System.Runtime.Serialization
using System.Runtime.Serialization.Json;//添加 System.ServiceModel和System.ServiceModel.Web的引用
using System.Xml;
using System.Runtime.Serialization.Formatters;

namespace JsonNetDemo
{
    public partial class WebForm1 : System.Web.UI.Page
    {
        string dataString = string.Empty;

        /// <summary>
        ///
        /// </summary>
        /// <param name="sender"></param>
        /// <param name="e"></param>
        protected void Page_Load(object sender, EventArgs e)
        {

        }
        /// <summary>
        /// 对象转化为JSON字符串
        /// http://www.cnblogs.com/coderzh/archive/2008/11/25/1340862.html
        /// </summary>
        /// <param name="sender"></param>
        /// <param name="e"></param>
        protected void Button1_Click(object sender, EventArgs e)
        {
            var config = new JsonConfig()
            {
                encoding = "UTF-8",
                plugins = new string[] { "Java", "C++", "C#" },
                indent = new Indent() { length = 4, use_space = false }
            };

            var serializer = new DataContractJsonSerializer(typeof(JsonConfig));
            var stream = new MemoryStream();
            serializer.WriteObject(stream, config);

            byte[] dataBytes = new byte[stream.Length];

            stream.Position = 0;

            stream.Read(dataBytes, 0, (int)stream.Length);

            dataString = Encoding.UTF8.GetString(dataBytes);

            Response.Write("JSON string is:");
            Response.Write(dataString);
        }
        /// <summary>
        /// JSON字符串转对象
        /// </summary>
        /// <param name="sender"></param>
        /// <param name="e"></param>
        protected void Button2_Click(object sender, EventArgs e)
        {
            var config = new JsonConfig()
            {
                encoding = "UTF-8",
                plugins = new string[] { "Java", "C++", "C#" },
                indent = new Indent() { length = 4, use_space = false }
            };

            var serializer = new DataContractJsonSerializer(typeof(JsonConfig));
            var stream = new MemoryStream();
            serializer.WriteObject(stream, config);

            byte[] dataBytes = new byte[stream.Length];

            stream.Position = 0;

            stream.Read(dataBytes, 0, (int)stream.Length);

            dataString = Encoding.UTF8.GetString(dataBytes);

            //var serializer = new DataContractJsonSerializer(typeof(JsonConfig));
            var mStream = new MemoryStream(Encoding.Default.GetBytes(dataString));
            JsonConfig readConfig = (JsonConfig)serializer.ReadObject(mStream);

            Response.Write(string.Format("Encoding is: {0}", readConfig.encoding));
            foreach (string plugin in readConfig.plugins)
            {
                Response.Write(string.Format("plugins is: {0}", plugin));
            }
            Response.Write(string.Format("indent.length is: {0}", readConfig.indent.length));
            Response.Write(string.Format("indent.use_space is: {0}", readConfig.indent.use_space));
        }
    }

    [DataContract(Name = "Customer", Namespace = "JsonNetDemo")]
    class JsonConfig
    {
        [DataMember(Order = 0)]
        public string encoding { get; set; }
        [DataMember(Order = 1)]
        public string[] plugins { get; set; }
        [DataMember(Order = 2)]
        public Indent indent { get; set; }
    }

    [DataContract(Name = "Customer", Namespace = "JsonNetDemo")]
    class Indent
    {
        [DataMember(Order = 0)]
        public int length { get; set; }
        [DataMember(Order = 1)]
        public bool use_space { get; set; }
    }
}