'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"