C# 16进制与byte[]数组相互转换

        /// <summary>
        /// byte数组转16进制字符串
        /// </summary>
        /// <param name="data">byte数组</param>
        /// <returns></returns>
        public static string ByteArrayToHexString(byte[] data)
        {
            StringBuilder sb = new StringBuilder(data.Length * 3);
            foreach (byte b in data)
            {
                sb.Append(Convert.ToString(b, 16).PadLeft(2, '0'));
            }
            return sb.ToString().ToUpper();
        }

        /// <summary>
        /// 16进制字符串转byte数组
        /// </summary>
        /// <param name="hexString">16进制字符</param>
        /// <returns></returns>
        public static byte[] ByteArrayToHexString(string hexString)
        {
            //将16进制秘钥转成字节数组
            var byteArray = new byte[hexString.Length / 2];
            for (var x = 0; x < byteArray.Length; x++)
            {
                var i = Convert.ToInt32(hexString.Substring(x * 2, 2), 16);
                byteArray[x] = (byte)i;
            }
            return byteArray;
        }