byte[] Array to Hex String

byte[] Array to Hex String

• Aaron L

  Here's my function:

  public static string HexStr(byte[] p) {

  char[] c=new char[p.Length*2 + 2];

  byte b;

  c[0]='0'; c[1]='x';

  for(int y=0, x=2; y<p.Length; ++y, ++x) {

  b=((byte)(p[y ]>>4));

  c[x]=(char)(b>9 b+0x37 : b+0x30);

  b=((byte)(p[y ]&0xF));

  c[++x]=(char)(b>9 b+0x37 : b+0x30);

  }

  return new string(c);

  }

  it puts "0x" at the beginning of the string, but that's a simple matter to change.

  HexStr(new byte[]{0x00,0xDE,0xAD,0xBE,0xEF,0x99}) ==> "0x00DEADBEEF99"

  Sorry to cut you off up there, but when dealing with big arrays, every character - every processor cycle - counts.

  
  

• jasse_91

  Note however, if

  Byte[] Bytes = {0xFF, 0xD0, 0xFF, 0xD1} to "FF-D0-FF-D1"

  is acceptable, you can use:

  BitConverter.ToString(Bytes);

  
  

  
  
  

• Andrew Sears - T4G

  thnx a lot, this work for me
  
  string hex = BitConverter.ToString(Bytes);
  hex = hex.Replace("-","");
  
  although not "one-step" solution, but great enough
  
  

• AndyL

  None that I've found. I use:

  StringBuilder sb = new StringBuilder(ba.Length * 2);
  foreach (byte b in ba)
  {
  sb.AppendFormat("{0:x2}", b)
  }
  return sb.ToString();

  
  
  

• Glen Satuito

  Faster variant:
  
  public class JSMHexConverter
  {
  /// <summary>
  /// Helper array to speedup conversion
  /// </summary>
  static string[] BATHS = { "00", "01", "02", "03", "04", "05", "06", "07", "08", "09", "0A", "0B", "0C", "0D", "0E", "0F", "10", "11", "12", "13", "14", "15", "16", "17", "18", "19", "1A", "1B", "1C", "1D", "1E", "1F", "20", "21", "22", "23", "24", "25", "26", "27", "28", "29", "2A", "2B", "2C", "2D", "2E", "2F", "30", "31", "32", "33", "34", "35", "36", "37", "38", "39", "3A", "3B", "3C", "3D", "3E", "3F", "40", "41", "42", "43", "44", "45", "46", "47", "48", "49", "4A", "4B", "4C", "4D", "4E", "4F", "50", "51", "52", "53", "54", "55", "56", "57", "58", "59", "5A", "5B", "5C", "5D", "5E", "5F", "60", "61", "62", "63", "64", "65", "66", "67", "68", "69", "6A", "6B", "6C", "6D", "6E", "6F", "70", "71", "72", "73", "74", "75", "76", "77", "78", "79", "7A", "7B", "7C", "7D", "7E", "7F", "80", "81", "82", "83", "84", "85", "86", "87", "88", "89", "8A", "8B", "8C", "8D", "8E", "8F", "90", "91", "92", "93", "94", "95", "96", "97", "98", "99", "9A", "9B", "9C", "9D", "9E", "9F", "A0", "A1", "A2", "A3", "A4", "A5", "A6", "A7", "A8", "A9", "AA", "AB", "AC", "AD", "AE", "AF", "B0", "B1", "B2", "B3", "B4", "B5", "B6", "B7", "B8", "B9", "BA", "BB", "BC", "BD", "BE", "BF", "C0", "C1", "C2", "C3", "C4", "C5", "C6", "C7", "C8", "C9", "CA", "CB", "CC", "CD", "CE", "CF", "D0", "D1", "D2", "D3", "D4", "D5", "D6", "D7", "D8", "D9", "DA", "DB", "DC", "DD", "DE", "DF", "E0", "E1", "E2", "E3", "E4", "E5", "E6", "E7", "E8", "E9", "EA", "EB", "EC", "ED", "EE", "EF", "F0", "F1", "F2", "F3", "F4", "F5", "F6", "F7", "F8", "F9", "FA", "FB", "FC", "FD", "FE", "FF" };
  
  /// <summary>
  /// Function converts byte array to it's hexadecimal implementation
  /// </summary>
  /// <param name="ArrayToConvert">Array to be converted</param>
  /// <param name="Delimiter">Delimiter to be inserted between bytes</param>
  /// <returns>String to represent given array</returns>
  static string ByteArrayToHexString(byte[] ArrayToConvert, string Delimiter)
  {
  int LengthRequired = (ArrayToConvert.Length + Delimiter.Length) * 2;
  StringBuilder tempstr = new StringBuilder(LengthRequired, LengthRequired);
  foreach(byte CurrentElem in ArrayToConvert)
  {
  tempstr.Append(BATHS[CurrentElem]);
  tempstr.Append(Delimiter);
  }
  
  return tempstr.ToString();
  }
  
  }
  
  
• byte[] Array to Hex String