C# JSON 序列化(原生 + 第三方Newtonsoft) 的使用

[
  {
    "name": "张三",
    "age": 10
  },
  {
    "name": "李四",
    "age": 12
  }
]

public class People
{
    public string Name { get; set; }
    public string Age { get; set; }
    public string Sex { get; set; }
}

private void button1_Click(object sender, EventArgs e)
{
    // 1. 实例化对象，接收页面数据
    People p1 = new People()
    {
        Name = textBox1.Text,
        Age = textBox2.Text,
        Sex = textBox3.Text,
    };

    // 2. 创建文件流，覆盖写入
    FileStream fs = new FileStream(@"1.txt", FileMode.Create);

    // 3. 原生JSON序列化工具，绑定实体类型
    DataContractJsonSerializer ds = new DataContractJsonSerializer(typeof(People));

    // 4. 序列化写入文件
    ds.WriteObject(fs, p1);

    // 5. 释放资源
    fs.Close();
    fs.Dispose();
}

private void button2_Click(object sender, EventArgs e)
{
    // 1. 打开文件流
    FileStream fs = new FileStream(@"1.txt", FileMode.Open);

    // 2. 创建序列化工具
    DataContractJsonSerializer ds = new DataContractJsonSerializer(typeof(People));

    // 3. 反序列化 + 强制类型转换
    People p1 = (People)ds.ReadObject(fs);

    // 4. 数据展示
    this.Text = p1.Name;

    // 5. 释放资源
    fs.Close();
    fs.Dispose();
}

public class Student
{
    public string Name { get; set; }
    public int Age { get; set; }
    public string Info { get; set; }
}

List<Student> list = new List<Student>();
public Form1()
{
    InitializeComponent();
    // 循环批量生成测试数据
    for (int i = 0; i < 10; i++)
    {
        Student s1 = new Student()
        {
            Name = "哈兰德" + i,
            Age = i * 10,
            Info = "前锋"
        };
        list.Add(s1);
    }
}

private void button1_Click(object sender, EventArgs e)
{
    // 集合序列化为JSON字符串
    string data = JsonConvert.SerializeObject(list);
    // 写入本地文件
    File.WriteAllText(@"1.txt", data);
}

private void button2_Click(object sender, EventArgs e)
{
    // 读取本地JSON文本
    string data = File.ReadAllText(@"1.txt");
    // 反序列化为学生集合
    List<Student> s1 = JsonConvert.DeserializeObject<List<Student>>(data);

    // 遍历展示数据
    string ss = "";
    foreach (var item in s1)
    {
        ss += item.Name;
    }
    this.Text = ss;
}

private void button3_Click(object sender, EventArgs e)
{
    // 读取复杂JSON文件
    string data = File.ReadAllText(@"漫画.txt", Encoding.Default);
    // 反序列化为根对象
    XiaoShuoRoot root = JsonConvert.DeserializeObject<XiaoShuoRoot>(data);

    // 遍历文本数据展示
    foreach (var item in root.hits.topicMessageList)
    {
        richTextBox1.Text += item.author_name + "\n";
    }

    // 动态创建图片控件排版
    createPic(panel1, 2, 8, 100, 100, 10, root.hits.topicMessageList);
}
// 图片、作者信息节点
public class TopicMessageList
{
    public string cover_image_url { get; set; }
    public string author_name { get; set; }
}

// 数据集合节点
public class Hits
{
    public List<TopicMessageList> topicMessageList { get; set; }
}

// JSON根节点
public class XiaoShuoRoot
{
    public int code { get; set; }
    public string message { get; set; }
    public int total { get; set; }
    public Hits hits { get; set; }
}

private void button3_Click(object sender, EventArgs e)
{
    // 读取复杂JSON文件
    string data = File.ReadAllText(@"漫画.txt", Encoding.Default);
    // 反序列化为根对象
    XiaoShuoRoot root = JsonConvert.DeserializeObject<XiaoShuoRoot>(data);

    // 遍历文本数据展示
    foreach (var item in root.hits.topicMessageList)
    {
        richTextBox1.Text += item.author_name + "\n";
    }

    // 动态创建图片控件排版
    createPic(panel1, 2, 8, 100, 100, 10, root.hits.topicMessageList);
}

/// <summary>
/// 动态批量创建PictureBox图片控件
/// </summary>
private void createPic(Panel p1, int rows, int col, int width, int height, int space, List<TopicMessageList> a)
{
    int count = -1;
    int startX = 10; // 起始X坐标
    int startY = 10; // 起始Y坐标

    // 双层循环实现行列排版
    for (int i = 0; i < rows; i++)
    {
        for (int j = 0; j < col; j++)
        {
            count++;
            PictureBox pic = new PictureBox()
            {
                BorderStyle = BorderStyle.FixedSingle, // 边框样式
                Width = width,
                Height = height,
                SizeMode = PictureBoxSizeMode.StretchImage, // 图片拉伸适配
                BackColor = Color.Red,
                ImageLocation = a[count].cover_image_url // 网络图片地址
            };

            // 设置控件坐标
            pic.Left = startX + j * (width + space);
            pic.Top = startY + i * (height + space);

            // 添加到容器
            p1.Controls.Add(pic);
        }
    }
}