下载Newtonsoft.Json.dll

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;

using Newtonsoft.Json;
using Newtonsoft.Json.Linq;
using System;
namespace ConsoleApplication1
{
    class Program
    {
        static void Main(string[] args)
        {
            string jsonString = "{\"name\":\"Alice\",\"age\":25}";
            JObject jsonObject = JObject.Parse(jsonString);

            string name = jsonObject["name"].ToString();
            name = jsonObject.Value<string>("name");
            int age = jsonObject.Value<int>("age");

            Console.WriteLine("Name: " + name);  // 输出：Name: Alice
            Console.WriteLine("Age: " + age);  // 输出：Age: 25
        }
    }
}