using System;
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using System.Collections.Generic;
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using System.Text;
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using System.Globalization;
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namespace BLL
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{
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public class ClsDateToNongli
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{
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/// <summary>
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/// 实例化一个 ChineseLunisolarCalendar
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/// </summary>
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private static ChineseLunisolarCalendar ChineseCalendar = new ChineseLunisolarCalendar();
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/// <summary>
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/// 十天干
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/// </summary>
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private static string[] tg = { "甲", "乙", "丙", "丁", "戊", "己", "庚", "辛", "壬", "癸" };
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/// <summary>
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/// 十二地支
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/// </summary>
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private static string[] dz = { "子", "丑", "寅", "卯", "辰", "巳", "午", "未", "申", "酉", "戌", "亥" };
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/// <summary>
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/// 十二生肖
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/// </summary>
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private static string[] sx = { "鼠", "牛", "虎", "兔", "龙", "蛇", "马", "羊", "猴", "鸡", "狗", "猪" };
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/// <summary>
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/// 返回农历天干地支年
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/// </summary>
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/// <param name="year">农历年</param>
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/// <returns></returns>
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public static string GetLunisolarYear(int year)
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{
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if (year > 3)
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{
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int tgIndex = (year - 4) % 10;
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int dzIndex = (year - 4) % 12;
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return string.Concat(tg[tgIndex], dz[dzIndex], "[", sx[dzIndex], "]");
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}
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throw new ArgumentOutOfRangeException("无效的年份!");
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}
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/// <summary>
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/// 农历月
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/// </summary>
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/// <returns></returns>
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private static string[] months = { "正", "二", "三", "四", "五", "六", "七", "八", "九", "十", "十一", "十二(腊)" };
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/// <summary>
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/// 农历日
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/// </summary>
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private static string[] days1 = { "初", "十", "廿", "三" };
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/// <summary>
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/// 农历日
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/// </summary>
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private static string[] days = { "一", "二", "三", "四", "五", "六", "七", "八", "九", "十" };
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/// <summary>
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/// 返回农历月
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/// </summary>
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/// <param name="month">月份</param>
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/// <returns></returns>
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public static string GetLunisolarMonth(int month)
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{
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if (month < 13 && month > 0)
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{
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return months[month - 1];
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}
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throw new ArgumentOutOfRangeException("无效的月份!");
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}
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/// <summary>
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/// 返回农历日
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/// </summary>
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/// <param name="day">天</param>
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/// <returns></returns>
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public static string GetLunisolarDay(int day)
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{
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if (day > 0 && day < 32)
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{
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if (day != 20 && day != 30)
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{
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return string.Concat(days1[(day - 1) / 10], days[(day - 1) % 10]);
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}
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else
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{
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return string.Concat(days[(day - 1) / 10], days1[1]);
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}
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}
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throw new ArgumentOutOfRangeException("无效的日!");
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}
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/// <summary>
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/// 根据公历获取农历日期
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/// </summary>
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/// <param name="datetime">公历日期</param>
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/// <returns></returns>
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public static string GetChineseDateTime(DateTime datetime)
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{
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//农历的年月日
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int year = ChineseCalendar.GetYear(datetime);
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int month = ChineseCalendar.GetMonth(datetime);
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int day = ChineseCalendar.GetDayOfMonth(datetime);
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//获取闰月， 0 则表示没有闰月
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int leapMonth = ChineseCalendar.GetLeapMonth(year);
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bool isleap = false;
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if (leapMonth > 0)
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{
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if (leapMonth == month)
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{
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//闰月
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isleap = true;
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month--;
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}
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else if (month > leapMonth)
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{
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month--;
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}
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}
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return string.Concat(GetLunisolarYear(year), "年", isleap ? "闰" : string.Empty, GetLunisolarMonth(month), "月", GetLunisolarDay(day));
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}
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}
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}
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