using System;
using System.Collections.Generic;
using System.Web;
using System.Runtime.Serialization;
using System.IO;
using System.Runtime.Serialization.Json;  //添加引用System.Runtime.Serialization
namespace QAPITool
{
    public static class JSON
    {
        public static T parse<T>(string jsonString)
        {
            using (var ms = new MemoryStream(System.Text.Encoding.UTF8.GetBytes(jsonString)))
            { return (T)new DataContractJsonSerializer(typeof(T)).ReadObject(ms); }
        }
        public static string stringify(object jsonObject)
        {
            using (var ms = new MemoryStream())
            {
                new DataContractJsonSerializer(jsonObject.GetType()).WriteObject(ms, jsonObject);
                return System.Text.Encoding.UTF8.GetString(ms.ToArray());
            }
        }
    }
}

上面这段代码是解析任何格式的JSON，返回一个类，当然前提是你首先新建一个类

下面来看看新建的类：

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

namespace QAPITool
{

    [Serializable]
    [DataContract]
    public class UserInfo
    {

        [DataMember]
        public string errcode;

        [DataMember]
        public string msg;

        [DataMember]
        public string ret;

        [DataMember]
        public UDataInfo data;
    }

    [Serializable]
    [DataContract]
    public class UDataInfo
    {
        [DataMember]
        public int hasnext;//0 月 1 无
        [DataMember]
        public Infoclass[] info;
    }

    [Serializable]
    [DataContract]
    public class Infoclass
    {
        [DataMember]
        public string name;
        [DataMember]
        public string openid;
        [DataMember]
        public string nick;
        [DataMember]
        public string fansnum;
        [DataMember]
        public string idolnum;
        [DataMember]
        public int  sex;
        [DataMember]
        public string isvip;
        [DataMember]
        public string isfans;
        [DataMember]
        public string isidol;
    }
}

类的实例已经定义完成，最后我们只需要调用这个JSON，返回类即可：

 UserInfo ui = JSON.parse<UserInfo>(addResult);

记住：addResult必须是JSON格式的才能解析