如何使用 C 中的 Json.Net 將物件序列化為 JSON

以下示例顯示如何使用 Json.Net 將 C#Object 例項中的資料序列化為 JSON 字串。

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

public class Employee
{
    public string FirstName { get; set; }
    public string LastName { get; set; }
    public bool IsManager { get; set; }
    public DateTime JoinedDate { get; set; }
    public IList<string> Titles { get; set; }
}
                    
public class Program
{
    public static void Main()
    {
        Employee employee = new Employee
        {
            FirstName = "Shiva",
            LastName = "Kumar",            
            IsManager = true,
            JoinedDate = new DateTime(2013, 1, 20, 0, 0, 0, DateTimeKind.Utc),
            Titles = new List<string>
            {
                "Sr. Software Engineer",
                "Applications Architect"
            }
        };

        string json = JsonConvert.SerializeObject(employee, Formatting.Indented);

Console.WriteLine(json);
        
    }
}

如果你執行這個控制檯程式，Console.WriteLine(json) 的輸出將是

{
  "FirstName": "Shiva",
  "LastName": "Kumar",
  "IsManager": true,
  "JoinedDate": "2013-01-20T00:00:00Z",
  "Titles": [
    "Sr. Software Engineer",
    "Applications Architect"
  ]
}

很少有事情需要注意

1. 以下行將 employee 類例項內的資料實際序列化為 json 字串

   string json = JsonConvert.SerializeObject(employee, Formatting.Indented);

2. 引數 Formatting.Indented 告訴 Json.Net 使用縮排和新行序列化資料。如果不這樣做，序列化字串將是一個長字串，沒有縮排或換行符。