Convert Byte Array to Hexidecimal String in C#

I had to write a function today which will take an arrayof bytes and convert those bytes into a hexidecimal string representation. This was part of an encryption algorithm. There are a couple on the net but they seem to be more complicated. Here is what I came up with (and this seems the simplest way to me, so there may be similar ones out there):




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        public string ToHexString(byte[] array)
        {
            string vals = "0123456789ABCDEF";
            StringBuilder result = new StringBuilder();
 
            for (int i = 0; i < array.Length; i++)
            {
                result.Append(vals[array[i] >> 4]);
                result.Append(vals[array[i] & 15]);
            }
 
            return result.ToString();
        }

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This entry was posted on Thursday, September 10th, 2009 at 12:40 pm and is filed under CSharp, Dot Net. You can follow any responses to this entry through the RSS 2.0 feed. You can leave a response, or trackback from your own site.

  1. Balau says:
    September 15, 2009 at 4:55 am

    You coud do two other things:
    1)
    char [] chararray = new char[array.Length*2];
    // Fill chararray with your vals
    return new string(chararray);
    2)
    use the function to extend the byte[] array using C# 3.0 extension methods:
    http://msdn.microsoft.com/en-us/library/bb383977.aspx

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