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C# winform 公历日期转农历日期

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///         /// 获取当前服务器公历时间 转 农历时间        ///         //天干        private static string[] TianGan = { "甲", "乙", "丙", "丁", "戊", "己", "庚", "辛", "壬", "癸" };        //地支        private static string[] DiZhi = { "子", "丑", "寅", "卯", "辰", "巳", "午", "未", "申", "酉", "戌", "亥" };        //十二生肖        private static string[] ShengXiao = { "鼠", "牛", "虎", "兔", "龙", "蛇", "马", "羊", "猴", "鸡", "狗", "猪" };        //农历日期        private static string[] DayName =   {"*","初一","初二","初三","初四","初五",             "初六","初七","初八","初九","初十",             "十一","十二","十三","十四","十五",             "十六","十七","十八","十九","二十",             "廿一","廿二","廿三","廿四","廿五",                   "廿六","廿七","廿八","廿九","三十"};        //农历月份        private static string[] MonthName = { "*", "正", "二", "三", "四", "五", "六", "七", "八", "九", "十", "十一", "腊" };        //公历月计数天        private static int[] MonthAdd = { 0, 31, 59, 90, 120, 151, 181, 212, 243, 273, 304, 334 };        //农历数据        private static int[] LunarData = {2635,333387,1701,1748,267701,694,2391,133423,1175,396438            ,3402,3749,331177,1453,694,201326,2350,465197,3221,3402            ,400202,2901,1386,267611,605,2349,137515,2709,464533,1738            ,2901,330421,1242,2651,199255,1323,529706,3733,1706,398762            ,2741,1206,267438,2647,1318,204070,3477,461653,1386,2413            ,330077,1197,2637,268877,3365,531109,2900,2922,398042,2395            ,1179,267415,2635,661067,1701,1748,398772,2742,2391,330031            ,1175,1611,200010,3749,527717,1452,2742,332397,2350,3222            ,268949,3402,3493,133973,1386,464219,605,2349,334123,2709            ,2890,267946,2773,592565,1210,2651,395863,1323,2707,265877};        ///         /// 获取对应日期的农历        ///         ///公历日期        ///         public static string GetLunarCalendar(DateTime dtDay)        {            string sYear = dtDay.Year.ToString();            string sMonth = dtDay.Month.ToString();            string sDay = dtDay.Day.ToString();            int year;            int month;            int day;            try            {                year = int.Parse(sYear);                month = int.Parse(sMonth);                day = int.Parse(sDay);            }            catch            {                year = DateTime.Now.Year;                month = DateTime.Now.Month;                day = DateTime.Now.Day;            }            int nTheDate;            int nIsEnd;            int k, m, n, nBit, i;            string calendar = string.Empty;            //计算到初始时间1921年2月8日的天数:1921-2-8(正月初一)            nTheDate = (year - 1921) * 365 + (year - 1921) / 4 + day + MonthAdd[month - 1] - 38;            if ((year % 4 == 0) && (month > 2))                nTheDate += 1;            //计算天干,地支,月,日            nIsEnd = 0;            m = 0;            k = 0;            n = 0;            while (nIsEnd != 1)            {                if (LunarData[m] < 4095)                    k = 11;                else                    k = 12;                n = k;                while (n >= 0)                {                    //获取LunarData[m]的第n个二进制位的值                    nBit = LunarData[m];                    for (i = 1; i < n + 1; i++)                        nBit = nBit / 2;                    nBit = nBit % 2;                    if (nTheDate <= (29 + nBit))                    {                        nIsEnd = 1;                        break;                    }                    nTheDate = nTheDate - 29 - nBit;                    n = n - 1;                }                if (nIsEnd == 1)                    break;                m = m + 1;            }            year = 1921 + m;            month = k - n + 1;            day = nTheDate;            //return year+"-"+month+"-"+day;            #region 格式化日期显示为三月廿四            if (k == 12)            {                if (month == LunarData[m] / 65536 + 1)                    month = 1 - month;                else if (month > LunarData[m] / 65536 + 1)                    month = month - 1;            }            //生肖            calendar = ShengXiao[(year - 4) % 60 % 12].ToString() + "年 ";            //天干            calendar += TianGan[(year - 4) % 60 % 10].ToString();            //地支            calendar += DiZhi[(year - 4) % 60 % 12].ToString() + " ";            //农历月            if (month < 1)                calendar += "闰" + MonthName[-1 * month].ToString() + "月";            else                calendar += MonthName[month].ToString() + "月";            //农历日            calendar += DayName[day].ToString() + "日";            return calendar;            #endregion        }