本实例实现超市摄像头定时监控系统。运行本例后，在“定时监控设置”处设置监控的星期及时间，单击【保存】按钮，将“定时设置”参数数据保存到数据库中。系统在运行到定时时间后，程序将自动进行监控。如图所示。另外，监控的录像文件和图片文件保存在D盘根目录中，命名格式为系统当前日期。图超市摄像头定时监控实现过程（1）新建一个项目，命名为Ex13_10，默认窗体为Form1，添加一个类文件（.CS），用于编写视频类。（2）在Form1窗体中，主要添加一个PictrueBox控件，用于显示视频。（3）主要程序代码。视频类中主要程序代码如下：///<summary>///开始录像///</summary>///<paramname="path">要保存录像的路径</param>publicvoidStarKinescope(stringpath){IntPtrhBmp=Marshal.StringToHGlobalAnsi(path);SendMessage(hWndC,WM_CAP_FILE_SET_CAPTURE_FILEA,0,hBmp.ToInt32());SendMessage(hWndC,WM_CAP_SEQUENCE,0,0);}///<summary>///停止录像///</summary>publicvoidStopKinescope(){SendMessage(hWndC,WM_CAP_STOP,0,0);}Form1窗体主要代码如下：privatevoidtimer1_Tick(objectsender,EventArgse){stringstrTime="";//星期一if(chk1.Checked&&Convert.ToInt32(DateTime.Now.DayOfWeek)==1){strTime=DateTime.Now.ToString("HH:mm");DateTimedate=Convert.ToDateTime(mtxt1.Text);if(strTime==date.ToString("HH:mm"))video.StarKinescope(@"d:\"+DateTime.Today.Month.ToString()+DateTime.Today.Day.ToString()+DateTime.Now.Hour.ToString()+DateTime.Now.Minute.ToString()+DateTime.Now.Second.ToString()+".avi");}//星期二if(chk1.Checked&&Convert.ToInt32(DateTime.Now.DayOfWeek)==2){strTime=DateTime.Now.ToString("HH:mm");DateTimedate=Convert.ToDateTime(mtxt2.Text);if(strTime==date.ToString("HH:mm"))video.StarKinescope(@"d:\"+DateTime.Today.Month.ToString()+DateTime.Today.Day.ToString()+DateTime.Now.Hour.ToString()+DateTime.Now.Minute.ToString()+DateTime.Now.Second.ToString()+".avi");}//星期三if(chk1.Checked&&Convert.ToInt32(DateTime.Now.DayOfWeek)==3){strTime=DateTime.Now.ToString("HH:mm");DateTimedate=Convert.ToDateTime(mtxt3.Text);if(strTime==date.ToString("HH:mm"))video.StarKinescope(@"d:\"+DateTime.Today.Month.ToString()+DateTime.Today.Day.ToString()+DateTime.Now.Hour.ToString()+DateTime.Now.Minute.ToString()+DateTime.Now.Second.ToString()+".avi");}//星期四if(chk1.Checked&&Convert.ToInt32(DateTime.Now.DayOfWeek)==4){strTime=DateTime.Now.ToString("HH:mm");DateTimedate=Convert.ToDa