public struct NET_DVR_FIND_DATA

    {

        [MarshalAs(UnmanagedType.ByValTStr, SizeConst = )]

        /// <summary>

        /// 文件名

        ///     char sFileName[100];

        /// </summary>

        public string sFileName;

        /// <summary>

        /// 文件的开始时间

        /// </summary>

        public NET_DVR_TIME struStartTime;

        /// <summary>

        /// 文件的结束时间

        /// </summary>

        public NET_DVR_TIME struStopTime;

        /// <summary>

        /// 文件的大小

        /// </summary>

        public uint dwFileSize;

    }

      int FindFile = HCNetSDK.NET_DVR_FindNextFile(lRealHandle, ref Net_DVR_FindData);

             if (Findhandle != -)

             {

                 //当找到录像文件时接口将返回1000，当没有查找到文件或查找结束将返回1003或者1004，返回1002表示当前正在查找

                 while (FindFile != )

                 {

                     switch (FindFile)

                     {

                         case :

                             HCNetSDK.NET_DVR_FIND_DATA FindData = new HCNetSDK.NET_DVR_FIND_DATA();

                             FindData.sFileName = Net_DVR_FindData.sFileName;

                             FindData.dwFileSize = Net_DVR_FindData.dwFileSize;

                             FindData.struStartTime = Net_DVR_FindData.struStartTime;

                             FindData.struStopTime = Net_DVR_FindData.struStopTime;

                             dgvFile.Rows.Add(new object[] { FindData.sFileName, FindData.dwFileSize, string.Format("{0}.{1}.{2} {3}:{4}:{5}", FindData.struStartTime.dwYear, FindData.struStartTime.dwMonth, FindData.struStartTime.dwDay, FindData.struStartTime.dwHour, FindData.struStartTime.dwMinute, FindData.struStartTime.dwSecond) });

                             FindFile = HCNetSDK.NET_DVR_FindNextFile(Findhandle, ref Net_DVR_FindData);

                             break;

                         case :

                             MessageBox.Show("没有找到文件！");

                             break;

                         case :

                             FindFile = HCNetSDK.NET_DVR_FindNextFile(Findhandle, ref Net_DVR_FindData);

                             break;

                         case :

                             MessageBox.Show("查找完毕！");

                             break;

                         default:

                             MessageBox.Show("查找文件时异常");

                             break;

                     }

                 }