/// <summary>
        /// 「DateTime」轉「民國日期時間數字字串」
        /// 例:DateTime --> 105/02/16 或 DateTime --> 1050216 或 DateTime --> 1050216125225
        /// </summary>
        /// <param name="dateTime">DateTime</param>
        /// <param name="format">轉換格式(與DateTime.ToString方法相同)</param>
        /// <returns>民國日期時間數字字串</returns>
        public static string DateTimeToTWDateTimeNum(DateTime dateTime, string format)
        {
            //取得年份的Format
            string yearPattern = @"([yY]+)";
            Match  result      = Regex.Match(format, yearPattern);
            //取得非年份的Format
            string notYearPattern = @"([^yY]+)";
            Match  otherResult    = Regex.Match(format, notYearPattern);
            //取得民國年
            int year = new TaiwanCalendar().GetYear(dateTime);
            //把y或Y取代成0 (ToString用法,以0取代預留位置)
            string yearFormat = result.Value.Replace("y", "Y").Replace("Y", "0");

            //回傳格式
            return(year.ToString(yearFormat) + dateTime.ToString(otherResult.Value));
        }
    public static void Main()
    {
        // Create an instance of the calendar.
        TaiwanCalendar myCal = new TaiwanCalendar();

        Console.WriteLine(myCal.ToString());

        // Create an instance of the GregorianCalendar.
        GregorianCalendar myGre = new GregorianCalendar();

        // Display the MinValue and its equivalent in the GregorianCalendar.
        DateTime myMin = myCal.MinSupportedDateTime;

        Console.Write("MinSupportedDateTime: {0:D2}/{1:D2}/{2:D4}", myCal.GetMonth(myMin), myCal.GetDayOfMonth(myMin), myCal.GetYear(myMin));
        Console.WriteLine(" (in Gregorian, {0:D2}/{1:D2}/{2:D4})", myGre.GetMonth(myMin), myGre.GetDayOfMonth(myMin), myGre.GetYear(myMin));

        // Display the MaxValue and its equivalent in the GregorianCalendar.
        DateTime myMax = myCal.MaxSupportedDateTime;

        Console.Write("MaxSupportedDateTime: {0:D2}/{1:D2}/{2:D4}", myCal.GetMonth(myMax), myCal.GetDayOfMonth(myMax), myCal.GetYear(myMax));
        Console.WriteLine(" (in Gregorian, {0:D2}/{1:D2}/{2:D4})", myGre.GetMonth(myMax), myGre.GetDayOfMonth(myMax), myGre.GetYear(myMax));
    }