首先點擊連接http://sourceforge.net/projects/csjson/?source=dlp 下載JSON .NET插件和代碼。
然后在項目中進行引用Newtonsoft.Json.dll
添加命名空間：using Newtonsoft.Json;

下面介紹json序列化和反序列化的放個重要方法和例子：
JsonConvert.SerializeObject(object value)序列化，
它有個重載方法JsonConvert.SerializeObject(object value, params JsonConverter[] converters)。
JsonConvert.DeserializeObject(string value, Type type)，反序列化，
它有個重載方法JsonConvert.DeserializeObject(string value, Type type, params JsonConverter[] converters)
這兩個方法可以實現基本的序列化和反序列化要求，請看下面的例子：
首先我們先建一個Person類代碼如下：
  public class Person
    {
        private string name;
        public string Name
        {
            get { return name; }
            set { name = value; }
        }
        private int age;
        public int Age
        {
            get { return age; }
            set { age = value; }
        }
    }
1）序列化
 using System;
using System.Collections.Generic;
using System.Linq;
using System.Web;
using System.Web.UI;
using System.Web.UI.WebControls;
using Newtonsoft.Json;
 
namespace JSONnet
{
    public partial class test : System.Web.UI.Page
    {
        protected void Page_Load(object sender, EventArgs e)
        {
            Person person = new Person();
            person.Name = "GoldenEasy";
            person.Age = 25;
            string strSerializeJSON = JsonConvert.SerializeObject(person);
            Response.Write(strSerializeJSON);                    
        }
    }
}
輸出結果：
{"Name":"GoldenEasy","Age":25}
2）反序列化
using System;
using System.Collections.Generic;
using System.Linq;
using System.Web;
using System.Web.UI;
using System.Web.UI.WebControls;
using Newtonsoft.Json;
 
namespace JSONnet
{
    public partial class test : System.Web.UI.Page
    {
        protected void Page_Load(object sender, EventArgs e)
        {
            Person person = new Person();
            person.Name = "GoldenEasy";
            person.Age = 25;
            string strSerializeJSON = JsonConvert.SerializeObject(person);          
            Person user = (Person)JsonConvert.DeserializeObject(strSerializeJSON, typeof(Person));
            Response.Write(user.Name);
        
        }
    }
}
輸出結果為：GoldenEasy