using System;
public class LunarDate
...{
public const int MAX_YEAR = 2011;
public const int MIN_YEAR = 1900;
static readonly string[] lookupTable = new string[]
...{
"0100101101101080131", "0100101011100000219", "1010010101110000208",
"0101001001101050129", "1101001001100000216", "1101100101010000204",
"0110101010101040125", "0101011010100000213", "1001101011010000202",
"0100101011101020122", "0100101011100000210", "1010010011011060130",
"1010010011010000218", "1101001001010000206", "1101010101001050126",
"1011010101010000214", "0101011010100000204", "1001011011010020123",
"1001010110110000211", "0100100110111070201", "0100100110110000220",
"1010010010110000208", "1011001001011050128", "0110101001010000216",
"0110110101000000205", "1010110110101040124", "0010101101100000213",
"1001010101110000202", "0100100101111020123", "0100100101110000210",
"0110010010110060130", "1101010010100000217", "1110101001010000206",
"0110110101001050126", "0101101011010000214", "0010101101100000204",
&nb "1001001101110030124", "1001001011100000211", "1100100101101070131",
"1100100101010000219", "1101010010100000208", "1101101001010060127",
"1011010101010000215", "0101011010100000205", "1010101011011040125",
"0010010111010000213", "1001001011010000202", "1100100101011020122",
"1010100101010000210", "1011010010101070129", "0110110010100000217",
"1011010101010000206", "0101010110101050127", "0100110110100000214",
"1010010110110000203", "0101001010111030124", "0101001010110000212",
"1010100101010080131", "1110100101010000218", "0110101010100000208",
"1010110101010060128", "1010101101010000215", "0100101101100000205",
"1010010101110040125", "1010010101110000213", "0101001001100000202",
"1110100100110030121", "1101100101010000209", "0101101010101070130",
"0101011010100000217", "1001011011010000206", "0100101011101050127",
"0100101011010000215", "1010010011010000203", "1101001001101040123",
"1101001001010000211", "1101010100101080131", "1011010101000000218",
"1011011010100000207", "1001011011010060128", "1001010110110000216",
"0100100110110000205", "1010010010111040125", "1010010010110000213",
"1011001001011100202", "0110101001010000220", "0110110101000000209",
"1010110110101060129", "1010101101100000217", "1001001101110000206",
"0100100101111050127", "0100100101110000215", "0110010010110000204",
"0110101001010030123", "1110101001010000210", "0110101100101080131",
"0101101011000000219", "1010101101100000207", "1001001101101050128",
"1001001011100000216", "1100100101100000205", "1101010010101040124",
"1101010010100000212", "1101101001010000201", "0101101010101020122",
"0101011010100000209", "1010101011011070129", "0010010111010000218",
"1001001011010000207", "1100100101011050126", "1010100101010000214",
"1011010010100000214"
};
/**//// <summary>十二生肖</summary>
static readonly string animalsTable = "鼠牛虎兔龍蛇馬羊猴雞狗豬";
static readonly string monthsTable = "正二三四五六七八九十寒臘";
static readonly string daysTable = "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";
/**//// <summary>天干地支</summary>
static readonly string[] chineseEra;
static LunarDate()
...{
string sky = "甲乙丙丁戊已庚辛壬癸"; //天干
string earth = "子丑寅卯辰巳午未申酉戌亥"; //地支
chineseEra = new string[60];
for (int i = 0; i < 60; i++)
chineseEra[i] = sky.Substring(i % 10, 1) + earth.Substring(i % 12, 1);
}
public LunarDate(int year, int month, int day)
...{
if ((year < MIN_YEAR) || (year > MAX_YEAR))
throw new ArgumentOutOfRangeException("year to0 large or too small");
// 計算農歷年
int lunarYear;
int lunarMonth;
int lunarDay;
lunarYear = year;
// 農歷新年月份
lunarMonth = Convert.ToInt32((lookupTable[lunarYear - MIN_YEAR].Substring(15, 2)));
// 農歷新年日子
lunarDay = Convert.ToInt32((lookupTable[lunarYear - MIN_YEAR].Substring(17, 2))); ;
if ((month < lunarMonth) || ((month == lunarMonth) && (day < lunarDay)))
...{
lunarYear--;
// 農歷新年月份
lunarMonth = Convert.ToInt32((lookupTable[lunarYear - MIN_YEAR].Substring(15, 2)));
// 農歷新年日子
lunarDay = Convert.ToInt32((lookupTable[lunarYear - MIN_YEAR].Substring(17, 2))); ;
// 計算農歷月
DateTime date = new DateTime(year, month, day);
DateTime lunarDate = new DateTime(lunarYear, lunarMonth, lunarDay);
TimeSpan span = date - lunarDate;
int dayCount = span.Days;
lunarMonth = 1;
lunarDay = 1;
bool leapMonth = false; //閏月
for (int i = 0; i < dayCount; i++)
...{
lunarDay++;
if (lunarDay == 30 + Convert.ToInt32(lookupTable[lunarYear - MIN_YEAR].Substring(lunarMonth - 1, 1)) ||
(leapMonth == true && (lunarDay == 30 + Convert.ToInt32(lookupTable[lunarYear - MIN_YEAR].Substring(12, 1)))))
...{
if (
(leapMonth == false) &&
(lunarMonth == Convert.ToInt32(lookupTable[lunarYear - MIN_YEAR].Substring(13, 2)))
)
...{
leapMonth = true;
}
else
...{
leapMonth = false;
lunarMonth++;
}
lunarDay = 1;
}
else
...{
}
}
// 計算農歷日
lunarDayText = daysTable.Substring((lunarDay - 1) * 2, 2);
// 計算農歷月
lunarMonthText = monthsTable.Substring(lunarMonth - 1, 1) + "月";
if (leapMonth == true) lunarMonthText = "閏" + lunarMonthText;
// 農歷年
lunarYearText = Convert.ToString(lunarYear, 10) + "年";
// 計算天干地支
chineseEarText = chineseEra[(lunarYear - 4) % 60];
// 計算生肖
aminalsText = animalsTable.Substring((lunarYear - 4) % 12, 1);
}
//農歷日
private string lunarDayText;
public string LunarDay ...{ get ...{ return this.lunarDayText; } }
//農歷月
private string lunarMonthText;
public string LunarMonth ...{ get ...{ return this.lunarMonthText; } }
//農歷年
private string lunarYearText;
public string LunarYear ...{ get ...{ return this.lunarYearText; } }
//天干地支
private string chineseEarText;
public string chineseEar ...{ get ...{ return this.chineseEarText; } }
//生肖
private string aminalsText;
public string Aminals ...{ get ...{ return this.aminalsText; } }
public override string ToString()
...{
return aminalsText + "," + chineseEarText + "," + lunarYearText + lunarMonthText + lunarDayText;
}
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