C# json settings read and write example

Program.cs

using System;
using System.IO;
using Newtonsoft.Json;

namespace RuyutConsoleApp
{
    internal class Program
    {
        private static void Main(string[] args)
        {
            ReadConfiguration();
            Console.WriteLine(Data.Name);
            Console.WriteLine(Data.Blog);
            Console.WriteLine(Data.Car);

            Data.Name = "Ruyut";
            Data.Blog = "https://www.ruyut.com";
            Data.Car = 0;
            SaveConfiguration();
        }


        public class ConfigurationDto
        {
            public string Name;
            public string Blog;
            public int Car;
        }

        public static ConfigurationDto Data = new();

        public static string FilePath = "RuyutConsoleApp.json";

        public static void ReadConfiguration()
        {
            if (!File.Exists(FilePath)) File.WriteAllText(FilePath, JsonConvert.SerializeObject(Data));

            var fileData = File.ReadAllText(FilePath);

            try
            {
                JsonConvert.PopulateObject(fileData, Data);
            }
            catch (Exception e)
            {
                Console.WriteLine("設定檔內容有誤，請確認!\n" + e.Message, "設定檔內容有誤");
            }
        }

        public static void SaveConfiguration()
        {
            string output = JsonConvert.SerializeObject(Data);
            File.WriteAllText(FilePath, output);
        }
    }
}