How to set string to content of byte array (no encoding) RRS feed

  • Question

  • Hi,
    Im working on packet sniffer but I cannot find out how to set string to the exact content of byte array. When debugging, there are "E/// ... " and many ASCII characters, but set to string there is only "E".
    I would need to show exactly the same as in byte array.
    Thursday, December 11, 2008 12:31 PM


All replies

  •  I am not sure this is what you want.

    byte[] bytes = { 72, 101, 108, 108, 111 };  
    char[] chars = new char[bytes.Length];  
    for (int i = 0; i < bytes.Length; i++)  
        chars[i] = (char)bytes[i];  
    string str = new string(chars); 
    Thursday, December 11, 2008 1:35 PM
  • Unfortunately when I add node to treeView (str), it still shows only "E" :(

    GOT IT. If byte is empty, it will mess up the string.
    • Edited by Blizna Thursday, December 11, 2008 2:02 PM
    Thursday, December 11, 2008 1:48 PM
  • Take a look at this thread.  Might make you want to rethink your approach.


    Rudedog  =8^D
    Mark the best replies as answers. "Fooling computers since 1971."
    Thursday, December 11, 2008 9:28 PM
  • All of the Windows controls and the Visual Studio debugger are written using C/C++.  That's a language where a binary zero means something special inside a string: it indicates end-of-string.  There are other codes like that, you've probably seen \r and \n before.  Long story short, you can't just translate a byte[] to a string.  The standard way to display bytes is to use Hex notation.  You can get that from the BitConverter class:

    using System;

    namespace ConsoleApplication1 {
      class Program {
        static void Main(string[] args) {
          byte[] binary = new byte[] { 0, 1, 2, 3, 4, 65 };
          string hex = BitConverter.ToString(binary);

    Hans Passant.
    Friday, December 12, 2008 12:21 PM
  • Of course you should not translate a byte[] to a string unless you know that the byte[] represents a string of characters.

    Like the method SerialPort.ReadLine(). You use it only when you know that the bytes you will receive on the serial port represent a string of characters.

    Friday, December 12, 2008 4:17 PM