/// <summary>
        /// 设置硬盘录像机的参数
        /// </summary>
        /// <param name="lUserID">NET_DVR_Login ()的返回值</param>
        /// <param name="dwCommand">参数类型</param>
        /// <param name="lChannel">通道号,如果不是通道参数,lChannel 不用,置为0 即可</param>
        /// <param name="lpInBuffer">存放输入参数的缓冲区</param>
        /// <param name="dwInBufferSize">缓冲区的大小</param>
        /// <returns>返回值:TRUE 表示成功,FALSE 表示失败。</returns>
        public bool SetDVRConfig(Int32 lUserID, Int32 dwCommand, Int32 lChannel, IntPtr lpInBuffer, Int32 dwInBufferSize)
        {
            Type typeAlarm = typeof(SDKPlugInData.SystemTime);
            object obj = Marshal.PtrToStructure(lpInBuffer, typeAlarm);
            SDKPlugInData.SystemTime systemtime1 = (SDKPlugInData.SystemTime)obj;

            DateTime datetime = Convert.ToDateTime(string.Format("{0}-{1}-{2} {3}:{4}:{5}", systemtime1.wYear, systemtime1.wMonth,
                          systemtime1.wDay, systemtime1.wHour, systemtime1.wMinute,
                          systemtime1.wSecond));

            TIME_PARAM time_param = new TIME_PARAM();
            time_param.m_year = systemtime1.wYear;
            time_param.m_month = (byte)systemtime1.wMonth;
            time_param.m_dayofmonth = (byte)systemtime1.wDay;
            time_param.m_dayofweek = (byte)datetime.DayOfWeek;
            time_param.m_hour = (byte)systemtime1.wHour;
            time_param.m_minute = (byte)systemtime1.wMinute;
            time_param.m_second = (byte)systemtime1.wSecond;
            time_param.bReceive = new byte[2];

            return VSNET_ClientSetSystime("wangluogaosuqiu", hashtable_ip[lUserID].ToString(), hashtable_username[lUserID].ToString(), hashtable_password[lUserID].ToString(), ref time_param, (ushort)(hashtable_port[lUserID]));
        }
 private static extern bool VSNET_ClientSetSystime(string m_sername, string m_url, string m_username,
     string m_password, ref TIME_PARAM m_pSetPara, ushort wserport);