Convert string to hex-string in C#

Question

I have a string like "sample". I want to get a string of it in hex format; like this:

"796173767265" 

Please give the C# syntax.

Answer 1

First you'll need to get it into a byte[], so do this:

byte[] ba = Encoding.Default.GetBytes("sample"); 

and then you can get the string:

var hexString = BitConverter.ToString(ba); 

now, that's going to return a string with dashes (-) in it so you can then simply use this:

hexString = hexString.Replace("-", ""); 

to get rid of those if you want.

NOTE: you could use a different Encoding if you needed to.

Answer 2

For Unicode support:

public class HexadecimalEncoding {     public static string ToHexString(string str)     {         var sb = new StringBuilder();          var bytes = Encoding.Unicode.GetBytes(str);         foreach (var t in bytes)         {             sb.Append(t.ToString("X2"));         }          return sb.ToString(); // returns: "48656C6C6F20776F726C64" for "Hello world"     }      public static string FromHexString(string hexString)     {         var bytes = new byte[hexString.Length / 2];         for (var i = 0; i < bytes.Length; i++)         {             bytes[i] = Convert.ToByte(hexString.Substring(i * 2, 2), 16);         }          return Encoding.Unicode.GetString(bytes); // returns: "Hello world" for "48656C6C6F20776F726C64"     } }