日历类

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Text.RegularExpressions;
using System.Globalization;

namespace AnkeEdu.Tools
{
      /// <summary>
        /// 中国日历信息实体类
        ///
        /// </summary>
        public sealed class ChineseCalendar
        {
            private DateTime m_SolarDate;
            private int m_LunarYear, m_LunarMonth, m_LunarDay;
            private bool m_IsLeapMonth = false;
            private string m_LunarYearSexagenary = null, m_LunarYearAnimal = null;
            private string m_LunarYearText = null, m_LunarMonthText = null, m_LunarDayText = null;
            private string m_SolarWeekText = null, m_SolarConstellation = null, m_SolarBirthStone = null;

            #region 构造函数

            public ChineseCalendar()
                : this(DateTime.Now.Date)
            {

            }

            /// <summary>
            /// 从指定的阳历日期创建中国日历信息实体类
            /// </summary>
            /// <param name="date">指定的阳历日期</param>
            public ChineseCalendar(DateTime date)
            {
                m_SolarDate = date;
                LoadFromSolarDate();
            }

            private void LoadFromSolarDate()
            {
                m_IsLeapMonth = false;
                m_LunarYearSexagenary = null;
                m_LunarYearAnimal = null;
                m_LunarYearText = null;
                m_LunarMonthText = null;
                m_LunarDayText = null;
                m_SolarWeekText = null;
                m_SolarConstellation = null;
                m_SolarBirthStone = null;

                m_LunarYear = calendar.GetYear(m_SolarDate);
                m_LunarMonth = calendar.GetMonth(m_SolarDate);
                int leapMonth = calendar.GetLeapMonth(m_LunarYear);

                if (leapMonth == m_LunarMonth)
                {
                    m_IsLeapMonth = true;
                    m_LunarMonth -= 1;
                }
                else if (leapMonth > 0 && leapMonth < m_LunarMonth)
                {
                    m_LunarMonth -= 1;
                }

                m_LunarDay = calendar.GetDayOfMonth(m_SolarDate);

                CalcConstellation(m_SolarDate, out m_SolarConstellation, out m_SolarBirthStone);
            }

            #endregion

            #region 日历属性

            /// <summary>
            /// 阳历日期
            /// </summary>
            public DateTime SolarDate
            {
                get { return m_SolarDate; }
                set
                {
                    if (m_SolarDate.Equals(value))
                        return;
                    m_SolarDate = value;
                    LoadFromSolarDate();
                }
            }
            /// <summary>
            /// 星期几
            /// </summary>
            public string SolarWeekText
            {
                get
                {
                    if (string.IsNullOrEmpty(m_SolarWeekText))
                    {
                        int i = (int)m_SolarDate.DayOfWeek;
                        m_SolarWeekText = ChineseWeekName[i];
                    }
                    return m_SolarWeekText;
                }
            }
            /// <summary>
            /// 阳历星座
            /// </summary>
            public string SolarConstellation
            {
                get { return m_SolarConstellation; }
            }
            /// <summary>
            /// 阳历诞生石
            /// </summary>
            public string SolarBirthStone
            {
                get { return m_SolarBirthStone; }
            }

            /// <summary>
            /// 阴历年份
            /// </summary>
            public int LunarYear
            {
                get { return m_LunarYear; }
            }
            /// <summary>
            /// 阴历月份
            /// </summary>
            public int LunarMonth
            {
                get { return m_LunarMonth; }
            }
            /// <summary>
            /// 是否阴历闰月
            /// </summary>
            public bool IsLeapMonth
            {
                get { return m_IsLeapMonth; }
            }
            /// <summary>
            /// 阴历月中日期
            /// </summary>
            public int LunarDay
            {
                get { return m_LunarDay; }
            }

            /// <summary>
            /// 阴历年干支
            /// </summary>
            public string LunarYearSexagenary
            {
                get
                {
                    if (string.IsNullOrEmpty(m_LunarYearSexagenary))
                    {
                        int y = calendar.GetSexagenaryYear(this.SolarDate);
                        m_LunarYearSexagenary = CelestialStem.Substring((y - 1) % 10, 1) + TerrestrialBranch.Substring((y - 1) % 12, 1);
                    }
                    return m_LunarYearSexagenary;
                }
            }
            /// <summary>
            /// 阴历年生肖
            /// </summary>
            public string LunarYearAnimal
            {
                get
                {
                    if (string.IsNullOrEmpty(m_LunarYearAnimal))
                    {
                        int y = calendar.GetSexagenaryYear(this.SolarDate);
                        m_LunarYearAnimal = Animals.Substring((y - 1) % 12, 1);
                    }
                    return m_LunarYearAnimal;
                }
            }


            /// <summary>
            /// 阴历年文本
            /// </summary>
            public string LunarYearText
            {
                get
                {
                    if (string.IsNullOrEmpty(m_LunarYearText))
                    {
                        m_LunarYearText = Animals.Substring(calendar.GetSexagenaryYear(new DateTime(m_LunarYear, 1, 1)) % 12 - 1, 1);
                        StringBuilder sb = new StringBuilder();
                        int year = this.LunarYear;
                        int d;
                        do
                        {
                            d = year % 10;
                            sb.Insert(0, ChineseNumber[d]);
                            year = year / 10;
                        } while (year > 0);
                        m_LunarYearText = sb.ToString();
                    }
                    return m_LunarYearText;
                }
            }
            /// <summary>
            /// 阴历月文本
            /// </summary>
            public string LunarMonthText
            {
                get
                {
                    if (string.IsNullOrEmpty(m_LunarMonthText))
                    {
                        m_LunarMonthText = (this.IsLeapMonth ? "闰" : "") + ChineseMonthName[this.LunarMonth - 1];
                    }
                    return m_LunarMonthText;
                }
            }

            /// <summary>
            /// 阴历月中日期文本
            /// </summary>
            public string LunarDayText
            {
                get
                {
                    if (string.IsNullOrEmpty(m_LunarDayText))
                        m_LunarDayText = ChineseDayName[this.LunarDay - 1];
                    return m_LunarDayText;
                }
            }

            #endregion

            /// <summary>
            /// 根据指定阳历日期计算星座＆诞生石
            /// </summary>
            /// <param name="date">指定阳历日期</param>
            /// <param name="constellation">星座</param>
            /// <param name="birthstone">诞生石</param>
            public static void CalcConstellation(DateTime date, out string constellation, out string birthstone)
            {
                int i = Convert.ToInt32(date.ToString("MMdd"));
                int j;
                if (i >= 321 && i <= 419)
                    j = 0;
                else if (i >= 420 && i <= 520)
                    j = 1;
                else if (i >= 521 && i <= 621)
                    j = 2;
                else if (i >= 622 && i <= 722)
                    j = 3;
                else if (i >= 723 && i <= 822)
                    j = 4;
                else if (i >= 823 && i <= 922)
                    j = 5;
                else if (i >= 923 && i <= 1023)
                    j = 6;
                else if (i >= 1024 && i <= 1121)
                    j = 7;
                else if (i >= 1122 && i <= 1221)
                    j = 8;
                else if (i >= 1222 || i <= 119)
                    j = 9;
                else if (i >= 120 && i <= 218)
                    j = 10;
                else if (i >= 219 && i <= 320)
                    j = 11;
                else
                {
                    constellation = "未知星座";
                    birthstone = "未知诞生石";
                    return;
                }
                constellation = Constellations[j];
                birthstone = BirthStones[j];

                #region 星座划分
                //白羊座：   3月21日------4月19日     诞生石：   钻石
                //金牛座：   4月20日------5月20日   诞生石：   蓝宝石
                //双子座：   5月21日------6月21日     诞生石：   玛瑙
                //巨蟹座：   6月22日------7月22日   诞生石：   珍珠
                //狮子座：   7月23日------8月22日   诞生石：   红宝石
                //处女座：   8月23日------9月22日   诞生石：   红条纹玛瑙
                //天秤座：   9月23日------10月23日     诞生石：   蓝宝石
                //天蝎座：   10月24日-----11月21日     诞生石：   猫眼石
                //射手座：   11月22日-----12月21日   诞生石：   黄宝石
                //摩羯座：   12月22日-----1月19日   诞生石：   土耳其玉
                //水瓶座：   1月20日-----2月18日   诞生石：   紫水晶
                //双鱼座：   2月19日------3月20日   诞生石：   月长石，血石
                #endregion
            }


            #region 阴历转阳历

            /// <summary>
            /// 获取指定年份春节当日（正月初一）的阳历日期
            /// </summary>
            /// <param name="year">指定的年份</param>
            public static DateTime GetLunarNewYearDate(int year)
            {
                DateTime dt = new DateTime(year, 1, 1);
                int cnYear = calendar.GetYear(dt);
                int cnMonth = calendar.GetMonth(dt);

                int num1 = 0;
                int num2 = calendar.IsLeapYear(cnYear) ? 13 : 12;

                while (num2 >= cnMonth)
                {
                    num1 += calendar.GetDaysInMonth(cnYear, num2--);
                }

                num1 = num1 - calendar.GetDayOfMonth(dt) + 1;
                return dt.AddDays(num1);
            }

            /// <summary>
            /// 阴历转阳历
            /// </summary>
            /// <param name="year">阴历年</param>
            /// <param name="month">阴历月</param>
            /// <param name="day">阴历日</param>
            /// <param name="IsLeapMonth">是否闰月</param>
            public static DateTime GetDateFromLunarDate(int year, int month, int day, bool IsLeapMonth)
            {
                if (year < 1902 || year > 2100)
                    throw new Exception("只支持1902～2100期间的农历年");
                if (month < 1 || month > 12)
                    throw new Exception("表示月份的数字必须在1～12之间");

                if (day < 1 || day > calendar.GetDaysInMonth(year, month))
                    throw new Exception("农历日期输入有误");

                int num1 = 0, num2 = 0;
                int leapMonth = calendar.GetLeapMonth(year);

                if (((leapMonth == month + 1) && IsLeapMonth) || (leapMonth > 0 && leapMonth <= month))
                    num2 = month;
                else
                    num2 = month - 1;

                while (num2 > 0)
                {
                    num1 += calendar.GetDaysInMonth(year, num2--);
                }

                DateTime dt = GetLunarNewYearDate(year);
                return dt.AddDays(num1 + day - 1);
            }

            /// <summary>
            /// 阴历转阳历
            /// </summary>
            /// <param name="date">阴历日期</param>
            /// <param name="IsLeapMonth">是否闰月</param>
            public static DateTime GetDateFromLunarDate(DateTime date, bool IsLeapMonth)
            {
                return GetDateFromLunarDate(date.Year, date.Month, date.Day, IsLeapMonth);
            }

            #endregion

            #region 从阴历创建日历

            /// <summary>
            /// 从阴历创建日历实体
            /// </summary>
            /// <param name="year">阴历年</param>
            /// <param name="month">阴历月</param>
            /// <param name="day">阴历日</param>
            /// <param name="IsLeapMonth">是否闰月</param>
            public static ChineseCalendar FromLunarDate(int year, int month, int day, bool IsLeapMonth)
            {
                DateTime dt = GetDateFromLunarDate(year, month, day, IsLeapMonth);
                return new ChineseCalendar(dt);
            }
            /// <summary>
            /// 从阴历创建日历实体
            /// </summary>
            /// <param name="date">阴历日期</param>
            /// <param name="IsLeapMonth">是否闰月</param>
            public static ChineseCalendar FromLunarDate(DateTime date, bool IsLeapMonth)
            {
                return FromLunarDate(date.Year, date.Month, date.Day, IsLeapMonth);
            }

            /// <summary>
            /// 从阴历创建日历实体
            /// </summary>
            /// <param name="date">表示阴历日期的8位数字，例如：20070209</param>
            /// <param name="IsLeapMonth">是否闰月</param>
            public static ChineseCalendar FromLunarDate(string date, bool IsLeapMonth)
            {
                Regex rg = new System.Text.RegularExpressions.Regex(@"^d{7}(d)$");
                Match mc = rg.Match(date);
                if (!mc.Success)
                {
                    throw new Exception("日期字符串输入有误！");
                }
                DateTime dt = DateTime.Parse(string.Format("{0}-{1}-{2}", date.Substring(0, 4), date.Substring(4, 2), date.Substring(6, 2)));
                return FromLunarDate(dt, IsLeapMonth);
            }


            #endregion

            private static ChineseLunisolarCalendar calendar = new ChineseLunisolarCalendar();
            public const string ChineseNumber = "〇一二三四五六七八九";
            public const string CelestialStem = "甲乙丙丁戊己庚辛壬癸";
            public const string TerrestrialBranch = "子丑寅卯辰巳午未申酉戌亥";
            public const string Animals = "鼠牛虎兔龙蛇马羊猴鸡狗猪";
            public static readonly string[] ChineseWeekName = new string[] { "星期天", "星期一", "星期二", "星期三", "星期四", "星期五", "星期六" };
            public static readonly string[] ChineseDayName = new string[] {
            "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"};
            public static readonly string[] ChineseMonthName = new string[] { "正", "二", "三", "四", "五", "六", "七", "八", "九", "十", "十一", "十二" };
            public static readonly string[] Constellations = new string[] { "白羊座", "金牛座", "双子座", "巨蟹座", "狮子座", "处女座", "天秤座", "天蝎座", "射手座", "摩羯座", "水瓶座", "双鱼座" };
            public static readonly string[] BirthStones = new string[] { "钻石", "蓝宝石", "玛瑙", "珍珠", "红宝石", "红条纹玛瑙", "蓝宝石", "猫眼石", "黄宝石", "土耳其玉", "紫水晶", "月长石，血石" };



    }
}