C#中实现Json序列化与反序列化的几种方式

  var user = {"name":"Manas","gender":"Male","birthday":"1987-8-8"} 

var userlist = [{"user":{"name":"Manas","gender":"Male","birthday":"1987-8-8"}}, 
{"user":{"name":"Mohapatra","Male":"Female","birthday":"1987-7-7"}}]

var userlist = "{\"ID\":1,\"Name\":\"Manas\",\"Address\":\"India\"}" 

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

namespace JsonSerializerAndDeSerializer
{
 [DataContract]
 public class Student
 {
  [DataMember]
  public int ID { get; set; }

  [DataMember]
  public string Name { get; set; }

  [DataMember]
  public int Age { get; set; }

  [DataMember]
  public string Sex { get; set; }
 }
}

//----------------------------------------------------------------------------------------------
//使用DataContractJsonSerializer方式需要引入的命名空间，在System.Runtime.Serialization.dll.中
using System.Runtime.Serialization.Json;
//--------------------------------------------------------------------------------------------

#region 1.DataContractJsonSerializer方式序列化和反序列化
   Student stu = new Student()
    {
     ID = 1,
     Name = "曹操",
     Sex = "男",
     Age = 1000
    };
   //序列化
   DataContractJsonSerializer js = new DataContractJsonSerializer(typeof(Student));
   MemoryStream msObj = new MemoryStream();
   //将序列化之后的Json格式数据写入流中
   js.WriteObject(msObj, stu);
   msObj.Position = 0;
   //从0这个位置开始读取流中的数据
   StreamReader sr = new StreamReader(msObj, Encoding.UTF8);
   string json = sr.ReadToEnd();
   sr.Close();
   msObj.Close();
   Console.WriteLine(json);


   //反序列化
   string toDes = json;
   //string to = "{\"ID\":\"1\",\"Name\":\"曹操\",\"Sex\":\"男\",\"Age\":\"1230\"}";
   using (var ms = new MemoryStream(Encoding.Unicode.GetBytes(toDes)))
   {
    DataContractJsonSerializer deseralizer = new DataContractJsonSerializer(typeof(Student));
    Student model = (Student)deseralizer.ReadObject(ms);// //反序列化ReadObject
    Console.WriteLine("ID=" + model.ID);
    Console.WriteLine("Name=" + model.Name);
    Console.WriteLine("Age=" + model.Age);
    Console.WriteLine("Sex=" + model.Sex);
   }
   Console.ReadKey(); 
   #endregion

//-----------------------------------------------------------------------------------------
//使用JavaScriptSerializer方式需要引入的命名空间，这个在程序集System.Web.Extensions.dll.中
using System.Web.Script.Serialization;
//----------------------------------------------------------------------------------------

#region 2.JavaScriptSerializer方式实现序列化和反序列化
   Student stu = new Student()
    {
     ID = 1,
     Name = "关羽",
     Age = 2000,
     Sex = "男"
    };

   JavaScriptSerializer js = new JavaScriptSerializer();
   string jsonData = js.Serialize(stu);//序列化
   Console.WriteLine(jsonData);


   ////反序列化方式一：
   string desJson = jsonData;
   //Student model = js.Deserialize<Student>(desJson);// //反序列化
   //string message = string.Format("ID={0},Name={1},Age={2},Sex={3}", model.ID, model.Name, model.Age, model.Sex);
   //Console.WriteLine(message);
   //Console.ReadKey(); 


   ////反序列化方式2
   dynamic modelDy = js.Deserialize<dynamic>(desJson); //反序列化
   string messageDy = string.Format("动态的反序列化,ID={0},Name={1},Age={2},Sex={3}",
    modelDy["ID"], modelDy["Name"], modelDy["Age"], modelDy["Sex"]);//这里要使用索引取值，不能使用对象.属性
   Console.WriteLine(messageDy);
   Console.ReadKey(); 
   #endregion 

//使用Json.NET类库需要引入的命名空间
//-----------------------------------------------------------------------------
using Newtonsoft.Json;
//-------------------------------------------------------------------------

#region 3.Json.NET序列化
   List<Student> lstStuModel = new List<Student>() 
   {
   
   new Student(){ID=1,Name="张飞",Age=250,Sex="男"},
   new Student(){ID=2,Name="潘金莲",Age=300,Sex="女"}
   };

   //Json.NET序列化
   string jsonData = JsonConvert.SerializeObject(lstStuModel);

   Console.WriteLine(jsonData);
   Console.ReadKey();


   //Json.NET反序列化
   string json = @"{ 'Name':'C#','Age':'3000','ID':'1','Sex':'女'}";
   Student descJsonStu = JsonConvert.DeserializeObject<Student>(json);//反序列化
   Console.WriteLine(string.Format("反序列化： ID={0},Name={1},Sex={2},Sex={3}", descJsonStu.ID, descJsonStu.Name, descJsonStu.Age, descJsonStu.Sex));
   Console.ReadKey(); 
   #endregion