Convert from string ascii to string Hex

Question

Suppose I have this string

string str = \"1234\"

I need a function that convert this string to this string:

\"0x31 0x32 0x33          


        

Answer 1

This is one I've used:

private static string ConvertToHex(byte[] bytes)
        {
            var builder = new StringBuilder();

            var hexCharacters = new[] { '0', '1', '2', '3', '4', '5', '6', '7', '8', '9', 'A', 'B', 'C', 'D', 'E', 'F' };

            for (var i = 0; i < bytes.Length; i++)
            {
                int firstValue = (bytes[i] >> 4) & 0x0F;
                int secondValue = bytes[i] & 0x0F;

                char firstCharacter = hexCharacters[firstValue];
                char secondCharacter = hexCharacters[secondValue];

                builder.Append("0x");
                builder.Append(firstCharacter);
                builder.Append(secondCharacter);
                builder.Append(' ');
            }

            return builder.ToString().Trim(' ');
        }

And then used like:

string test = "1234";
ConvertToHex(Encoding.UTF8.GetBytes(test));