农历|算法|转换'下面是一个关于VB的农历算法

'日期数据定义方法如下

'前12个字节代表1-12月为大月或是小月，1为大月30天，0为小月29天；

'第13位为闰月的情况，1为大月30天，0为小月29天；

'第14位为闰月的月份，如果不是闰月为0，否则给出月份，10、11、12分别用A、B、C来表示，即使用16进制；

'最后4位为当年家农历新年-即农历1月1日所在公历的日期，如0131代表1月31日。

Function GetChgDate(ByVal vDate As String, ByVal ChgType As 转换方式) As String

Dim vvdate() As String = Split(vDate, "-")



If vvdate(0) > 2011 Or vvdate(0) < 1900 Then

Throw New NotSupportedException("本函数只提供1900年至2011年的日历转换！")

End If



Dim AddMonth, AddDay, AddYear, getDay, i As Integer

Dim RunYue As Boolean

Dim conDate As DateTime



Dim daList(2011) As String

daList(1900) = "010010110110180131"

daList(1901) = "010010101110000219"

daList(1902) = "101001010111000208"

daList(1903) = "010100100110150129"

daList(1904) = "110100100110000216"

daList(1905) = "110110010101000204"

daList(1906) = "011010101010140125"

daList(1907) = "010101101010000213"

daList(1908) = "100110101101000202"

daList(1909) = "010010101110120122"

daList(1910) = "010010101110000210"

daList(1911) = "101001001101160130"

daList(1912) = "101001001101000218"

daList(1913) = "110100100101000206"

daList(1914) = "110101010100150126"

daList(1915) = "101101010101000214"

daList(1916) = "010101101010000204"

daList(1917) = "100101101101020123"

daList(1918) = "100101011011000211"

daList(1919) = "010010011011170201"

daList(1920) = "010010011011000220"

daList(1921) = "101001001011000208"

daList(1922) = "101100100101150128"

daList(1923) = "011010100101000216"

daList(1924) = "011011010100000205"

daList(1925) = "101011011010140124"

daList(1926) = "001010110110000213"

daList(1927) = "100101010111000202"

daList(1928) = "010010010111120123"

daList(1929) = "010010010111000210"

daList(1930) = "011001001011060130"

daList(1931) = "110101001010000217"

daList(1932) = "111010100101000206"

daList(1933) = "011011010100150126"

daList(1934) = "010110101101000214"

daList(1935) = "001010110110000204"

daList(1936) = "100100110111030124"

daList(1937) = "100100101110000211"

daList(1938) = "110010010110170131"

daList(1939) = "110010010101000219"

daList(1940) = "110101001010000208"

daList(1941) = "110110100101060127"

daList(1942) = "101101010101000215"

daList(1943) = "010101101010000205"

daList(1944) = "101010101101140125"

daList(1945) = "001001011101000213"

daList(1946) = "100100101101000202"

daList(1947) = "110010010101120122"

daList(1948) = "101010010101000210"

daList(1949) = "101101001010170129"

daList(1950) = "011011001010000217"

daList(1951) = "101101010101000206"

daList(1952) = "010101011010150127"

daList(1953) = "010011011010000214"

daList(1954) = "101001011011000203"

daList(1955) = "010100101011130124"

daList(1956) = "010100101011000212"

daList(1957) = "101010010101080131"

daList(1958) = "111010010101000218"

daList(1959) = "011010101010000208"

daList(1960) = "101011010101060128"

daList(1961) = "101010110101000215"

daList(1962) = "010010110110000205"

daList(1963) = "101001010111040125"

daList(1964) = "101001010111000213"

daList(1965) = "010100100110000202"

daList(1966) = "111010010011030121"

daList(1967) = "110110010101000209"

daList(1968) = "010110101010170130"

daList(1969) = "010101101010000217"

daList(1970) = "100101101101000206"

daList(1971) = "010010101110150127"

daList(1972) = "010010101101000215"

daList(1973) = "101001001101000203"

daList(1974) = "110100100110140123"

daList(1975) = "110100100101000211"

daList(1976) = "110101010010180131"

daList(1977) = "101101010100000218"

daList(1978) = "101101101010000207"

daList(1979) = "100101101101060128"

daList(1980) = "100101011011000216"

daList(1981) = "010010011011000205"

daList(1982) = "101001001011140125"

daList(1983) = "101001001011000213"

daList(1984) = "1011001001011A0202"

daList(1985) = "011010100101000220"

daList(1986) = "011011010100000209"

daList(1987) = "101011011010060129"

daList(1988) = "101010110110000217"

daList(1989) = "100100110111000206"

daList(1990) = "010010010111150127"

daList(1991) = "010010010111000215"

daList(1992) = "011001001011000204"

daList(1993) = "011010100101030123"

daList(1994) = "111010100101000210"

daList(1995) = "011010110010180131"

daList(1996) = "010110101100000219"

daList(1997) = "101010110110000207"

daList(1998) = "100100110110150128"

daList(1999) = "100100101110000216"

daList(2000) = "110010010110000205"

daList(2001) = "110101001010140124"

daList(2002) = "110101001010000212"

daList(2003) = "110110100101000201"

daList(2004) = "010110101010120122"

daList(2005) = "010101101010000209"

daList(2006) = "101010101101170129"

daList(2007) = "001001011101000218"

daList(2008) = "100100101101000207"

daList(2009) = "110010010101150126"

daList(2010) = "101010010101000214"

daList(2011) = "101101001010000214"

AddYear = vvdate(0)



If ChgType = 转换方式.阴历转阳历 Then

AddMonth = Val(Mid(daList(AddYear), 15, 2))

AddDay = Val(Mid(daList(AddYear), 17, 2))

conDate = DateSerial(AddYear, AddMonth, AddDay)

AddDay = vvdate(2)

For i = 1 To vvdate(1) - 1

AddDay = AddDay + 29 + Val(Mid(daList(vvdate(0)), i, 1))

Next i

Return DateAdd(DateInterval.Day, AddDay - 1, conDate)

Else

CHUSHIHUA:

AddMonth = Val(Mid(daList(AddYear), 15, 2))

AddDay = Val(Mid(daList(AddYear), 17, 2))

conDate = DateSerial(AddYear, AddMonth, AddDay)

Dim vtDate As DateTime

Try

vtDate = CType(vDate, DateTime)

Catch ex As Exception

Throw New NotSupportedException("阳历日期输入错误！")

End Try





getDay = DateDiff(DateInterval.Day, conDate, vtDate)

If getDay < 0 Then AddYear = AddYear - 1 : GoTo CHUSHIHUA

AddDay = 1

AddMonth = 1

For i = 1 To getDay

AddDay = AddDay + 1

If AddDay = 30 + Mid(daList(AddYear), AddMonth, 1) Or (RunYue And AddDay = 30 + Mid(daList(AddYear), 13, 1)) Then

If RunYue = False And AddMonth = Val("&H" & Mid(daList(AddYear), 14, 1)) Then

RunYue = True

Else

RunYue = False

AddMonth = AddMonth + 1

End If

AddDay = 1

End If



Next

Return AddYear & "-" & AddMonth & "-" & AddDay

End If



End Function



Enum 转换方式

阴历转阳历 = 1

阳历转阴历 = 0

End Enum