如何获得当月的最后一天和下个月的最后一天

Question

我想要获得当月的最后一天和下个月的最后一天。

这是我到目前为止提出的代码，但是我被迫在NodaTime代码和.NET方法DateTime.DaysInMonth（）之间混合以实现我正在寻找的东西，这听起来不对。

class Program {

    public static void Main(string[] args)
    {
        DateTimeZone mst = DateTimeZoneProviders.Tzdb["MST"];

        Instant now = SystemClock.Instance.Now;
        ZonedDateTime mstNow = now.InZone(mst);

        LocalDate mstLastDayOfCurrentMonth = new LocalDate(mstNow.Year, mstNow.Month, DateTime.DaysInMonth(mstNow.Year, mstNow.Month));
        Console.WriteLine("Last Day of Current Month: {0}", mstLastDayOfCurrentMonth);

        //move into the next month
        LocalDate nextMonth = mstLastDayOfCurrentMonth.PlusDays(1);
        LocalDate mstLastDayOfNextMonth = new LocalDate(nextMonth.Year, nextMonth.Month, DateTime.DaysInMonth(nextMonth.Year, nextMonth.Month)); 
        Console.WriteLine("Last Day of Next Month: {0}", mstLastDayOfNextMonth);

    }

}

你能否告诉我NodaTime推荐的方式来获得当前和下个月的最后一天？

提前致谢

Answer 1

获取ZonedDateTime的Calendar ，然后调用GetDaysInMonth(year, month)方法：

ZonedDateTime mstNow = now.InZone(mst);
CalendarSystem calendar = mstNow.Calendar;
LocalDate mstLastDayOfCurrentMonth = new LocalDate(
    mstNow.Year, mstNow.Month, calendar.GetDaysInMonth(mstNow.Year, mstNow.Month));