字符串和字节的转换

#region 由字节转化为字符串
        private string ConvertBytes(byte[] data)
        {
            ASCIIEncoding encoding = new ASCIIEncoding();
            Char[] dataChars = encoding.GetChars(data);

            // 使用StringBuilder来转化成字符串
            StringBuilder builder = new StringBuilder();
            builder.Append(dataChars);

            // 得到字符串
            string dataString = builder.ToString();

            // 提取左右两边的空格
            dataString = dataString.Trim();
            // 返回
            return dataString;

        }
        #endregion

        #region 把字符串转化为二进制
        private byte[] charToBinary(string str)
        {
            ASCIIEncoding encoding = new ASCIIEncoding();
            byte[] tag = encoding.GetBytes(str);
            return tag;
        }
        #endregion

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