Fan.Sys.Uri.percentEncodeByte C# (CSharp) Method

        static void percentEncodeByte(StringBuilder buf, int c)
        {
            buf.Append('%');
              int hi = (c >> 4) & 0xf;
              int lo = c & 0xf;
              buf.Append((char)(hi < 10 ? '0'+hi : 'A'+(hi-10)));
              buf.Append((char)(lo < 10 ? '0'+lo : 'A'+(lo-10)));
        }