Byte Array to Hex String

'lo

Right now I'm using System.Web.Configuration.MachineKey.ByteArrayToHexString() to convert Byte arrays to Hex strings.

As you can tell, it is rather ghastly and requires a reference to System.Web in the containing project. Far from ideal.

I've had a look at the method (courtesy of Lutz Roeder's Reflector) but it makes use of "Fixed" blocks, which the VB syntax doesn't support.

So does anyone know of a good algorithm to perform the conversion?

You would want to profile for speed impact, but you can do it a byte at a time with System.Convert.ToString( byte , int toBase );

So using a StringBuilder and this method you could create your own function to do it, and probably quite efficiently, though I don't know compared to your current method.

Jared

You can also just step through using something like:

StringBuilder sb = new StringBuilder();

foreach( byte b in myByteArray )
{
     sb.Append( b.ToString( "x" ) );
}

string myHex = sb.ToString();

The overloaded ToString() method for a byte allows you to put in in the format you want.

Jared

One tiny prob with that: you actually need to specify "x2" as the format string to make sure a leading zero is added when the byte is less than 0xF.
           
StringBuilder hex = new StringBuilder();
foreach (byte b in new byte[] { 0x01, 0xa, 0xa })
   hex.AppendFormat("{0:x2}", b);
               
Console.WriteLine(hex.ToString());

MSDN example: ToHexString

W3bbo wrote:

'lo

Right now I'm using System.Web.Configuration.MachineKey.ByteArrayToHexString() to convert Byte arrays to Hex strings.

As you can tell, it is rather ghastly and requires a reference to System.Web in the containing project. Far from ideal.

I've had a look at the method (courtesy of Lutz Roeder's Reflector) but it makes use of "Fixed" blocks, which the VB syntax doesn't support.

So does anyone know of a good algorithm to perform the conversion?