关于String 和 Base64 之间的互转 比较简单!

  public static String EncryptBase64Code(String text)
        {
            Byte[] bufin = System.Text.ASCIIEncoding.UTF8.GetBytes(text);
            String result = Convert.ToBase64String(bufin, 0, bufin.Length);
            return result;
        }

        public static String DecryptBase64Code(String text)
        {
            try
            {
                Byte[] bufout = Convert.FromBase64String(text);
                String result = System.Text.ASCIIEncoding.UTF8.GetString(bufout);
            return result;
            }
            catch
            {
                return text;
            }
        }