Hex to byte converter

tonelm54
tonelm54 used Ask the Experts™
on
Ive written a simple line which converts a byte array to a hex string:-
          urlSafe = BitConverter.ToString(byt2Convert).Replace("-", "")

However I have no idea how to convert back to a byte array? Does anyone?

I cant seem to find any example code as simple as converting it from byte to string.

Any ideas?

Thank you
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Straight from http://stackoverflow.com/questions/321370/convert-hex-string-to-byte-array
public static byte[] StringToByteArray(string hex) {
    return Enumerable.Range(0, hex.Length).
           Where(x => 0 == x % 2).
           Select(x => Convert.ToByte(hex.Substring(x, 2), 16)).
           ToArray();
}

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Commented:
Here is another similar technique that doesn't use lamba expressions


' There's no easy way to convert a hex byte string back into
            ' a byte array, so we have parse each byte
            ReDim in_buf((message.Length \ 2) - 1)
            For i As Integer = 0 To in_buf.Length - 1
                in_buf(i) = Byte.Parse(message.Substring(i * 2, 2), Globalization.NumberStyles.HexNumber)
            Next

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Commented:
You can also try this alternative. Just call Hex2Byte and specify the hex string as parameter.
Function Hex2Byte(ByVal Hex As String) As Byte()
        Dim bytes As New List(Of Byte)
        For i As Integer = 0 To Hex.Length - 1 Step 2
            bytes.Add(Byte.Parse(Hex.Substring(i, 2), Globalization.NumberStyles.HexNumber))
        Next
        Return bytes.ToArray
    End Function

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