十六进制字符串转换

  /// 十六进制转换字符串
        /// </summary>
        /// <param name="bts"></param>
        /// <param name="startIndex"></param>
        /// <param name="lenth"></param>
        /// <returns></returns>
        public string ByteArrayToHexString(byte[] bts)
        {
            if (bts == null || bts.Length == 0) return string.Empty;
            return ByteArrayToHexString(bts, 0, bts.Length);
        }
        public string ByteArrayToHexString(byte[] bts, int startIndex, int lenth)
        {
            if (bts == null || lenth == 0) return string.Empty;
            StringBuilder sb = new StringBuilder();
            for (int ii = startIndex; ii < bts.Length && ii < startIndex + lenth; ii++)
            {
                string sh = bts[ii].ToString("X").PadLeft(2, '0');
                sb.Append(sh + " ");
            }
            returnsb.ToString();
        }

  /// <summary>
        /// 字符串转换十六进制
        /// </summary>
        /// <param name="hexStr"></param>
        /// <param name="bts"></param>
        /// <returns></returns>
        public bool ByteArrayFromHexString(string hexStr, out byte[] bts)
        {
            try
            {
                hexStr = hexStr.Trim();
                string[] ss = hexStr.Split(new char[] { ' ', ',', ';', '\r', '\n' },
                    StringSplitOptions.RemoveEmptyEntries);
                bts = new byte[ss.Length];
                for (int ii = 0; ii < ss.Length; ii++)
                {
                    bts[ii] = byte.Parse(ss[ii], System.Globalization.NumberStyles.HexNumber);
                }
                return true;
            }
            catch
            {
                bts = null;
                return false;
            }
        }