void Main()

{

    //农历转阳历

    var lunar = new System.Globalization.ChineseLunisolarCalendar();

    var date = lunar.ToDateTime(, , , , , , ); //将2020年正月初一转为阳历，如果闰月，则月份加1。2020年有闰四月，则闰四月传5, 本年度之后的月份依次类推

    Console.WriteLine(date);

    //阳历转阴历

    date = new DateTime(, , );

    var leapMonth = lunar.GetLeapMonth(date.Year);  //获取当年农历闰月

    if (leapMonth == ) //当年没有闰月

    {

        var lunarDate = lunar.GetYear(date) + "年" + lunar.GetMonth(date) + "月" + lunar.GetDayOfMonth(date) + "日";

        Console.WriteLine(lunarDate);

    }

    else //当年有闰月

    {

        //因闰月之后月份都加了一，所以要减一

        var month = lunar.GetMonth(date) >= leapMonth ? lunar.GetMonth(date) -  : lunar.GetMonth(date);

        var lunarDate = lunar.GetYear(date) + "年" + (lunar.GetMonth(date) == leapMonth ? "闰" : string.Empty) + month + "月" + lunar.GetDayOfMonth(date) + "日";

        Console.WriteLine(lunarDate);

    }

}