public class Student

{

    public int ID { get; set; }

    public string Name { get; set; }

    public int Age { get; set; }

}

    //第一种：单一实体类

    Student s = new Student();

    s.Age = ;

    s.ID = ;

    s.Name = "张三";

    string json = Newtonsoft.Json.JavaScriptConvert.SerializeObject(s);//序列化对象（对象转json）

    //第二种：List<T>泛型 和上边方法相同

    List<Student> list = new List<Student>();

    for (int i = ; i < ; i++)

    {

        Student stu = new Student();

        stu.Age = i + ;

        stu.ID = i;

        stu.Name = "No."+i.ToString();

        list.Add(stu);

    }

    json = Newtonsoft.Json.JavaScriptConvert.SerializeObject(list);

    //json只有一条数据

    JavaScriptObject obj = (JavaScriptObject)JavaScriptConvert.DeserializeObject(json);

    string Name = obj["Name"].ToString();//取出某一字段

    Response.Write(Name);

    //json只有一条数据

    Student ms = (Student)JavaScriptConvert.DeserializeObject(JavaScriptConvert.SerializeObject(obj), typeof(Student));//json转对象

    Response.Write(ms.Name);

    //json有多条数据

    JavaScriptArray javascript = (JavaScriptArray)JavaScriptConvert.DeserializeObject(json);

    List<Student> slist = new List<Student>();

    for (int i = ; i < javascript.Count; i++)

    {

        JavaScriptObject temp = (JavaScriptObject)javascript[i];

        Student model = (Student)JavaScriptConvert.DeserializeObject(JavaScriptConvert.SerializeObject(temp), typeof(Student));

        slist.Add(model);

    }

    //4.0方法
    List<Student> slist = JsonConvert.DeserializeObject<List<Student>>(json);

    Response.Write(slist[].Name);