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How can I convert the string "0100" to a byte array {0,1,0,0} without using Convert.ToByte() on each element? The string may only contain characters 0 thru 9.

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  • Following links should help 1) stackoverflow.com/questions/16072709/… 2) stackoverflow.com/questions/30545162/… 3) stackoverflow.com/questions/6254003/… 4) rextester.com/discussion/HHSUSW47299/… Commented Apr 3, 2018 at 16:48
  • Are you assuming that the characters in your string will always be digits in the range 0-9, or always in an 8-bit character set? Commented Apr 3, 2018 at 16:48
  • @atur I said not with Encoding, example A becomes 65. Just 0 becomes 0 in byte. Commented Apr 3, 2018 at 16:50
  • @JimMischel Yes, sorry I will edit this. Commented Apr 3, 2018 at 16:51
  • @JP_99 : Couple of links are without encoding. Moreover, see all answer not just the accepted ones Commented Apr 3, 2018 at 16:51

1 Answer 1

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With linq

var bytes = "0100".Select(x => (byte)(x - '0')).ToArray();
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3 Comments

What is the type of bytes?
I think that's going to give you an array of int. You'll need to cast the x - '0' to byte if you want an array of bytes.
@EricLippert You are right :)

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