如何獲得當月的最后一天和下個月的最后一天

Question

我想要獲得當月的最后一天和下個月的最后一天。

這是我到目前為止提出的代碼，但是我被迫在NodaTime代碼和.NET方法DateTime.DaysInMonth（）之間混合以實現我正在尋找的東西，這聽起來不對。

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);

    }

}

你能否告訴我NodaTime推薦的方式來獲得當前和下個月的最后一天？

提前致謝

Answer 1

獲取ZonedDateTime的Calendar ，然后調用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));