注意：上面的Student实体中的契约 [DataMember]，[DataContract]，是使用DataContractJsonSerializer序列化和反序列化必须要加的，对于其他两种方式不必加，也可以的。
我们程序的代码：
要先引用程序集，在引入这个命名空间
//----------------------------------------------------------------------------------------------
//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
运行之后结果是：
再看看使用JavaScriptJsonSerializer的情况：
JavaScriptSerializer is a class which helps to serialize and deserialize JSON. It is present in namespace System.Web.Script.Serialization which is available in assembly System.Web.Extensions.dll. To serialize a .Net object to JSON string use Serialize method. It's possible to deserialize JSON string to .Net object using Deserialize<T> or DeserializeObject methods. Let's see how to implement serialization and deserialization using JavaScriptSerializer.
这里要先引用
//-----------------------------------------------------------------------------------------
//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;
//----------------------------------------------------------------------------------------
