（转）VB进制转换大全

明次发表于 2009-5-1 17:17

' 用途：将十进制转化为二进制
' 输入：Dec(十进制数)
' 输入数据类型：Long
' 输出：DEC_to_BIN(二进制数)
' 输出数据类型：String
' 输入的最大数为2147483647,输出最大数为1111111111111111111111111111111(31个1)
Public Function DEC_to_BIN(Byval Dec As Long) As String
DEC_to_BIN = ""
Do While Dec > 0
   DEC_to_BIN = Dec Mod 2 & DEC_to_BIN
   Dec = Dec \ 2
Loop
End Function

' 用途：将二进制转化为十进制
' 输入：Bin(二进制数)
' 输入数据类型：String
' 输出：BIN_to_DEC(十进制数)
' 输出数据类型：Long
' 输入的最大数为1111111111111111111111111111111(31个1),输出最大数为2147483647
Public Function BIN_to_DEC(ByVal Bin As String) As Long
Dim i As Long
For i = 1 To Len(Bin)
   BIN_to_DEC = BIN_to_DEC * 2 + Val(Mid(Bin, i, 1))
Next i
End Function

' 用途：将十六进制转化为二进制
' 输入：Hex(十六进制数)
' 输入数据类型：String
' 输出：HEX_to_BIN(二进制数)
' 输出数据类型：String
' 输入的最大数为2147483647个字符
Public Function HEX_to_BIN(ByVal Hex As String) As String
Dim i As Long
Dim B As String

Hex = UCase(Hex)
For i = 1 To Len(Hex)
   Select Case Mid(Hex, i, 1)
         Case "0": B = B & "0000"
         Case "1": B = B & "0001"
         Case "2": B = B & "0010"
         Case "3": B = B & "0011"
         Case "4": B = B & "0100"
         Case "5": B = B & "0101"
         Case "6": B = B & "0110"
         Case "7": B = B & "0111"
         Case "8": B = B & "1000"
         Case "9": B = B & "1001"
         Case "A": B = B & "1010"
         Case "B": B = B & "1011"
         Case "C": B = B & "1100"
         Case "D": B = B & "1101"
         Case "E": B = B & "1110"
         Case "F": B = B & "1111"
   End Select
Next i
While Left(B, 1) = "0"
   B = Right(B, Len(B) - 1)
Wend
HEX_to_BIN = B
End Function

' 用途：将二进制转化为十六进制
' 输入：Bin(二进制数)
' 输入数据类型：String
' 输出：BIN_to_HEX(十六进制数)
' 输出数据类型：String
' 输入的最大数为2147483647个字符
Public Function BIN_to_HEX(ByVal Bin As String) As String
Dim i As Long
Dim H As String
If Len(Bin) Mod 4 <> 0 Then
   Bin = String(4 - Len(Bin) Mod 4, "0") & Bin
End If

For i = 1 To Len(Bin) Step 4
   Select Case Mid(Bin, i, 4)
         Case "0000": H = H & "0"
         Case "0001": H = H & "1"
         Case "0010": H = H & "2"
         Case "0011": H = H & "3"
         Case "0100": H = H & "4"
         Case "0101": H = H & "5"
         Case "0110": H = H & "6"
         Case "0111": H = H & "7"
         Case "1000": H = H & "8"
         Case "1001": H = H & "9"
         Case "1010": H = H & "A"
         Case "1011": H = H & "B"
         Case "1100": H = H & "C"
         Case "1101": H = H & "D"
         Case "1110": H = H & "E"
         Case "1111": H = H & "F"
   End Select
Next i
While Left(H, 1) = "0"
   H = Right(H, Len(H) - 1)
Wend
BIN_to_HEX = H
End Function

' 用途：将十六进制转化为十进制
' 输入：Hex(十六进制数)
' 输入数据类型：String
' 输出：HEX_to_DEC(十进制数)
' 输出数据类型：Long
' 输入的最大数为7FFFFFFF,输出的最大数为2147483647
Public Function HEX_to_DEC(ByVal Hex As String) As Long
Dim i As Long
Dim B As Long

Hex = UCase(Hex)
For i = 1 To Len(Hex)
   Select Case Mid(Hex, Len(Hex) - i + 1, 1)
         Case "0": B = B + 16 ^ (i - 1) * 0
         Case "1": B = B + 16 ^ (i - 1) * 1
         Case "2": B = B + 16 ^ (i - 1) * 2
         Case "3": B = B + 16 ^ (i - 1) * 3
         Case "4": B = B + 16 ^ (i - 1) * 4
         Case "5": B = B + 16 ^ (i - 1) * 5
         Case "6": B = B + 16 ^ (i - 1) * 6
         Case "7": B = B + 16 ^ (i - 1) * 7
         Case "8": B = B + 16 ^ (i - 1) * 8
         Case "9": B = B + 16 ^ (i - 1) * 9
         Case "A": B = B + 16 ^ (i - 1) * 10
         Case "B": B = B + 16 ^ (i - 1) * 11
         Case "C": B = B + 16 ^ (i - 1) * 12
         Case "D": B = B + 16 ^ (i - 1) * 13
         Case "E": B = B + 16 ^ (i - 1) * 14
         Case "F": B = B + 16 ^ (i - 1) * 15
   End Select
Next i
HEX_to_DEC = B
End Function
' 用途：将十进制转化为十六进制
' 输入：Dec(十进制数)
' 输入数据类型：Long
' 输出：DEC_to_HEX(十六进制数)
' 输出数据类型：String
' 输入的最大数为2147483647,输出最大数为7FFFFFFF
Public Function DEC_to_HEX(Dec As Long) As String
Dim a As String
DEC_to_HEX = ""
Do While Dec > 0
   a = CStr(Dec Mod 16)
   Select Case a
         Case "10": a = "A"
         Case "11": a = "B"
         Case "12": a = "C"
         Case "13": a = "D"
         Case "14": a = "E"
         Case "15": a = "F"
   End Select
   DEC_to_HEX = a & DEC_to_HEX
   Dec = Dec \ 16
Loop
End Function

' 用途：将十进制转化为八进制
' 输入：Dec(十进制数)
' 输入数据类型：Long
' 输出：DEC_to_OCT(八进制数)
' 输出数据类型：String
' 输入的最大数为2147483647,输出最大数为17777777777
Public Function DEC_to_OCT(Byval Dec As Long) As String
DEC_to_OCT = ""
Do While Dec > 0
   DEC_to_OCT = Dec Mod 8 & DEC_to_OCT
   Dec = Dec \ 8
Loop
End Function

' 用途：将八进制转化为十进制
' 输入：Oct(八进制数)
' 输入数据类型：String
' 输出：OCT_to_DEC(十进制数)
' 输出数据类型：Long
' 输入的最大数为17777777777,输出的最大数为2147483647
Public Function OCT_to_DEC(ByVal Oct As String) As Long
Dim i As Long
Dim B As Long

For i = 1 To Len(Oct)
   Select Case Mid(Oct, Len(Oct) - i + 1, 1)
         Case "0": B = B + 8 ^ (i - 1) * 0
         Case "1": B = B + 8 ^ (i - 1) * 1
         Case "2": B = B + 8 ^ (i - 1) * 2
         Case "3": B = B + 8 ^ (i - 1) * 3
         Case "4": B = B + 8 ^ (i - 1) * 4
         Case "5": B = B + 8 ^ (i - 1) * 5
         Case "6": B = B + 8 ^ (i - 1) * 6
         Case "7": B = B + 8 ^ (i - 1) * 7
   End Select
Next i
OCT_to_DEC = B
End Function

' 用途：将二进制转化为八进制
' 输入：Bin(二进制数)
' 输入数据类型：String
' 输出：BIN_to_OCT(八进制数)
' 输出数据类型：String
' 输入的最大数为2147483647个字符
Public Function BIN_to_OCT(ByVal Bin As String) As String
Dim i As Long
Dim H As String
If Len(Bin) Mod 3 <> 0 Then
   Bin = String(3 - Len(Bin) Mod 3, "0") & Bin
End If

For i = 1 To Len(Bin) Step 3
   Select Case Mid(Bin, i, 3)
         Case "000": H = H & "0"
         Case "001": H = H & "1"
         Case "010": H = H & "2"
         Case "011": H = H & "3"
         Case "100": H = H & "4"
         Case "101": H = H & "5"
         Case "110": H = H & "6"
         Case "111": H = H & "7"
   End Select
Next i
While Left(H, 1) = "0"
   H = Right(H, Len(H) - 1)
Wend
BIN_to_OCT = H
End Function

' 用途：将八进制转化为二进制
' 输入：Oct(八进制数)
' 输入数据类型：String
' 输出：OCT_to_BIN(二进制数)
' 输出数据类型：String
' 输入的最大数为2147483647个字符
Public Function OCT_to_BIN(ByVal Oct As String) As String
Dim i As Long
Dim B As String

For i = 1 To Len(Oct)
   Select Case Mid(Oct, i, 1)
         Case "0": B = B & "000"
         Case "1": B = B & "001"
         Case "2": B = B & "010"
         Case "3": B = B & "011"
         Case "4": B = B & "100"
         Case "5": B = B & "101"
         Case "6": B = B & "110"
         Case "7": B = B & "111"
   End Select
Next i
While Left(B, 1) = "0"
   B = Right(B, Len(B) - 1)
Wend
OCT_to_BIN = B
End Function

' 用途：将八进制转化为十六进制
' 输入：Oct(八进制数)
' 输入数据类型：String
' 输出：OCT_to_HEX(十六进制数)
' 输出数据类型：String
' 输入的最大数为2147483647个字符
Public Function OCT_to_HEX(ByVal Oct As String) As String
Dim Bin As String
Bin = OCT_to_BIN(Oct)
OCT_to_HEX = BIN_to_HEX(Bin)
End Function

' 用途：将十六进制转化为八进制
' 输入：Hex(十六进制数)
' 输入数据类型：String
' 输出：HEX_to_OCT(八进制数)
' 输出数据类型：String
' 输入的最大数为2147483647个字符
Public Function HEX_to_OCT(ByVal Hex As String) As String
Dim Bin As String
Hex = UCase(Hex)
Bin = HEX_to_BIN(Hex)
HEX_to_OCT = BIN_to_OCT(Bin)
End Function

a1s2d3 发表于 2009-5-3 13:39

不错,辛苦了

清心居士 发表于 2009-5-3 23:39

挺好挺好,顶一下

gtle001 发表于 2009-5-10 11:46

wen275523556 发表于 2009-7-29 21:30

额 ...暂时还看不明白什么用的
貌似是我还没学到吧

1400021 发表于 2012-6-9 08:46

这个很不错啊

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（转）VB进制转换大全