App.config檔案讀寫

class Program
    {
        static void Main(string[] args)
        {
            string name = ConfigurationManager.AppSettings["NAME"].ToString();
            int age = int.Parse(ConfigurationManager.AppSettings["AGE"]);

            System.Configuration.Configuration config = ConfigurationManager.OpenExeConfiguration(ConfigurationUserLevel.None);
            config.AppSettings.Settings["NAME"].Value = "YourName";
            config.Save(ConfigurationSaveMode.Modified);
            ConfigurationManager.RefreshSection("appSettings"); // 重新加載新的配置檔案 
        }
    }