Opposite/reverse of BitConverter.ToString()

[Daniel Moth]

Hi

BitConverter.ToString produces a string given a byte array. Is there method
that takes that string to produce a byte array?

I know it is only 4 lines of code to get the result but if there is a
built-in function I'd prefer to use that... Anybody found one?

Cheers
Daniel

 

[Alex Yakhnin [MVP]]

System.Text.ASCIIEncoding.ASCII.GetBytes

or approriate encoder should get you that.

 

[Daniel Moth]

Hmm...

BitConverter.ToString
returns the hex values of each byte (separated by hyphens)

AnyEncoding.GetBytes()
will translate the chars from the string into bytes (rather than read
each hex value into a byte ignoring the hyphens)

Am I missing some overload?

The 4 lines (without word wrap) that do the trick are (in VB):
Dim b((s.Length \ 2) - 1) As Byte
For i As Int32 = 0 To b.GetUpperBound(0)
b(i) = Byte.Parse(s.Substring(i * 2, 2),
Globalization.NumberStyles.HexNumber)
Next i

Assuming the string was created with:
s = BitConverter.ToString(b).Replace("-", String.Empty)


But as I said, if there is a framework equivalent I'd rather use that (and
hence preserve the hyphens)...

Cheers
Daniel

 

[Alex Yakhnin [MVP]]

Sorry, I misunderstood your question. I don't think there's anything else in
the CF that would do what you want. So you're better off with your 4 lines

 

[Daniel Moth]

Thought so... Anyway, what's 4 lines between friends...

Cheers
Daniel