C＃：从Windows服务捕获屏幕

Question

i have to capture screenshot of Desktop after every one second. in Winform application it is running fine. but after moving the code to Windows Service it is not capturing the screenshot. Any idea why it is not doing so?

here is the code

public partial class ScreenCaptureService : ServiceBase
    {
        System.Timers.Timer timer = new System.Timers.Timer();

        public ScreenCaptureService()
        {
            InitializeComponent();            
            this.timer.Interval = 1000;
            this.timer.Elapsed += new System.Timers.ElapsedEventHandler(timer_Elapsed);

        }

        void timer_Elapsed(object sender, System.Timers.ElapsedEventArgs e)
        {
            CaptureScreen();
        }

        protected override void OnStart(string[] args)
        {
            if (!EventLog.SourceExists(this.ServiceName, Environment.MachineName))
            {
                EventLog.CreateEventSource(
                    new EventSourceCreationData(
                        this.ServiceName,
                        Environment.MachineName
                        )
                );
            }

            EventLog.WriteEntry(this.ServiceName, "The OnStart event has been called");
            this.timer.Enabled = true;
            CaptureScreen();
        }

        protected override void OnStop()
        {
            EventLog.WriteEntry(this.ServiceName, "The OnStop event has been called");
            this.timer.Enabled = false;
        }

        static int count = 1;
        private void CaptureScreen()
        {

            Bitmap printscreen = new Bitmap(Screen.PrimaryScreen.Bounds.Width, Screen.PrimaryScreen.Bounds.Height);

            Graphics graphics = Graphics.FromImage(printscreen as Image);

            graphics.CopyFromScreen(0, 0, 0, 0, printscreen.Size);

            printscreen.Save(@"C:\printscreen" + count++ + ".jpg", ImageFormat.Jpeg);

            EventLog.WriteEntry(this.ServiceName, "Screenshot Captured");
        }
}

Answer 1

您是否选中了“允许服务与桌面交互”（在服务属性中）？