对象和 JSON 之间来回转换

System.Text.Json 可以把对象序列化成 JSON，也可以把 JSON 反序列化回对象。

Student 对象

Name

小王

Age

Courses

C#, JSON

CamelCase 选项把 Name/Age/Courses 写成 name/age/courses。

对应代码

var student = new Student("小王", 18, ["C#", "JSON"]);
var options = new JsonSerializerOptions
{
    PropertyNamingPolicy = JsonNamingPolicy.CamelCase,
};

string json = JsonSerializer.Serialize(student, options);
Student? roundTrip =
    JsonSerializer.Deserialize<Student>(json, options);

public sealed record Student(
    string Name,
    int Age,
    List<string> Courses);

public sealed record AuditRecord(
    [property: JsonPropertyName("id")] int Id,
    string Message,
    [property: JsonIgnore] string Secret);