BitConverter.ToString() in reverse? [duplicate]

Answer 1

If you don't need that specific format, try using Base64, like this:

var bytes = new byte[] { 0x12, 0x34, 0x56 };
var base64 = Convert.ToBase64String(bytes);
bytes = Convert.FromBase64String(base64);

Base64 will also be substantially shorter.

If you need to use that format, this obviously won't help.