[.NET开发者的福音]一个方便易用的在线.NET代码编辑工具.NET Fiddle

using System;
using Newtonsoft.Json;
using System.Collections.Generic;

public class Program
{
    public static void Main()
    {
        var students = new List<Student>()
        {
           new Student("追逐时光者", 20),
           new Student("大姚", 22),
           new Student("小袁", 18),
        };

        string json = JsonConvert.SerializeObject(students);
        Console.WriteLine("将学生对象序列化为JSON字符串：" + json);
        var deserializedStudents = JsonConvert.DeserializeObject<List<Student>>(json);
        Console.WriteLine("将JSON字符串反序列化为学生对象：");
        foreach (var item in deserializedStudents)
        {
            Console.WriteLine($"Name：{item.Name}，Age：{item.Age}");
        }
    }

    public class Student
    {
        public Student(string name, int age)
        {
            Name = name;
            Age = age;
        }

        public string Name { get; set; }
        public int Age { get; set; }
    }
}