vb中文字和二进制相互转换_vb二进制文件转换文本-优快云博客

本文介绍了一种在Visual Basic环境中实现字符串与字节数据之间的相互转换的方法。该方法能够处理包括中文在内的混合字符集，并提供了两个核心函数：StrToByte用于将字符串转换为字节数组，而ByteToStr则负责将字节数组还原成原始字符串。

StrToByte:字符串->字节数组
ByteToStr:字节数组->字符串

可转换中英文混合字符.

Private Sub StrToByte(s As String, b() As Byte)
    Dim i As Long
    Dim p As Long
    Dim b1 As Byte, b2 As Byte
    For i = 1 To Len(s)
        If Asc(Mid$(s, i, 1)) >= 0 Then
            ReDim Preserve b(p)
            b(p) = Asc(Mid$(s, i, 1))
            p = p + 1
        Else
            ReDim Preserve b(p + 1)
            Call IntToByte(Asc(Mid$(s, i, 1)), b1, b2)
            b(p) = b1
            b(p + 1) = b2
            p = p + 2
        End If
    Next i
End Sub

Private Sub IntToByte(n As Integer, b1 As Byte, b2 As Byte)
    Dim s As String
    s = Right$("0000" & Hex$(n), 4)
    b1 = CByte("&H" & Left$(s, 2))
    b2 = CByte("&H" & Right$(s, 2))
End Sub

Private Function ByteToStr(b() As Byte) As String
    Dim i As Long
    While i <= UBound(b)
        If b(i) < 128 Then
            ByteToStr = ByteToStr & Chr$(b(i))
            i = i + 1
        Else
            ByteToStr = ByteToStr & Chr$(ByteToInt(b(i), b(i + 1)))
            i = i + 2
        End If
    Wend
End Function

Private Function ByteToInt(b1 As Byte, b2 As Byte) As Integer
    Dim s As String
    Dim s1 As String, s2 As String
    s1 = Right$("00" & Hex$(b1), 2)
    s2 = Right$("00" & Hex$(b2), 2)
    s = "&H" & s1 & s2
    ByteToInt = CInt(s)
End Function