//添加字符串 支持中文
    public void add_strings(string v)
    {
        v = Encoding.Default.GetString(Encryption.StringToHex(v));
        //得到字符串转换的字节编码
        byte[] b = m_gb2312.GetBytes(v);

        //添加字符串长度
        add_int(b.Length);

        //添加字符串
        _add_mem(b.Length);
        for (int i = 0; i < b.Length; ++i)
            m_data[m_size + i] = b[i];
        m_size += b.Length;
    }

    public bool get_strings(ref string v)
    {
        //得到字符串长度
        int sl = -1;
        if (!get_int(ref sl))
            return false;

        //判断长度是否合法
        if (m_data.Length - m_position < sl)
            return false;

        //得到字符串
        v = m_gb2312.GetString(m_data, m_position, sl);
        m_position += sl;

        string Temp = Encoding.Default.GetString(Encoding.Default.GetBytes(v));
        byte[] str = Encryption.HexToString(Temp);

        v = m_gb2312.GetString(str, 0, str.Length);

        return true;
    }