c# - ZKemKeeper 库中的实时事件处理程序在一段时间后停止响应设备事件

Question

我已经创建了一个简单的 Windows 服务项目来使用 ZKemKeeper 库从指纹设备捕获实时事件。该服务在第一时间似乎正常工作，并且它对设备中的事件响应良好。但我发现，服务在几分钟不活动后停止响应事件。我以为是服务导致了问题，但问题仍然存在于 WinForm 应用程序中，甚至 SDK 中包含的示例也显示了确切的问题。

这是 Windows 服务的代码:

public partial class Service1 : ServiceBase
{
    private System.Diagnostics.EventLog eventLog1;
    CZKEMClass myCZKEMClass;
    public Service1()
    {
        InitializeComponent();

        this.eventLog1 = new System.Diagnostics.EventLog();


        ((System.ComponentModel.ISupportInitialize)(this.eventLog1)).BeginInit();
        this.eventLog1.Log = "MyLog";
        this.eventLog1.Source = "MyLogSource";

        ((System.ComponentModel.ISupportInitialize)(this.eventLog1)).EndInit();

        this.ServiceName = "ZKemKeeperTestService";


    }

    protected override void OnStart(string[] args)
    {
        myCZKEMClass = new CZKEMClass();

        Thread createComAndMessagePumpThread = new Thread(() =>
        {
            myCZKEMClass.Connect_Net("192.168.1.20", 4370);


            if (myCZKEMClass.RegEvent(1, 65535))
            {
                myCZKEMClass.OnAttTransactionEx += new _IZKEMEvents_OnAttTransactionExEventHandler(myCZKEMClass_OnAttTransactionEx);
            }

            Application.Run();
        });
        createComAndMessagePumpThread.SetApartmentState(ApartmentState.STA);

        createComAndMessagePumpThread.Start();

        eventLog1.WriteEntry("Service Started");

    }


    protected override void OnStop()
    {
        eventLog1.WriteEntry("Service Stopped");
        myCZKEMClass.OnAttTransactionEx -= new _IZKEMEvents_OnAttTransactionExEventHandler(myCZKEMClass_OnAttTransactionEx);

    }

    private void myCZKEMClass_OnAttTransactionEx(string EnrollNumber, int IsInValid, int AttState, int VerificationMethod, int Year, int Month, int Day, int Hour, int Minute, int Second, int WorkCode)
    {

        eventLog1.WriteEntry(EnrollNumber.ToString());

    }
}

我不知道问题的原因是什么，我被困在那里。仅供引用，我使用的是在 Windows 10 中运行的 64 位版本库。我使用 .NET Framework 4.0 作为目标框架。

艾哈迈德穆利亚迪

Answer 1

我和你有同样的问题，请尝试取消注册该事件，然后每 60 秒重新注册一次，这对我有用。我使用的是在 Windows 8.1 中运行的 64 位版本 og 库

        if (bIsConnected == true)
        {
            this.axCZKEM1.OnFinger -= new zkemkeeper._IZKEMEvents_OnFingerEventHandler(axCZKEM1_OnFinger);
            this.axCZKEM1.OnVerify -= new zkemkeeper._IZKEMEvents_OnVerifyEventHandler(axCZKEM1_OnVerify);
            this.axCZKEM1.OnAttTransactionEx -= new zkemkeeper._IZKEMEvents_OnAttTransactionExEventHandler(axCZKEM1_OnAttTransactionEx);
            this.axCZKEM1.OnFingerFeature -= new zkemkeeper._IZKEMEvents_OnFingerFeatureEventHandler(axCZKEM1_OnFingerFeature);
            this.axCZKEM1.OnEnrollFingerEx -= new zkemkeeper._IZKEMEvents_OnEnrollFingerExEventHandler(axCZKEM1_OnEnrollFingerEx);

            iMachineNumber = 1;//In fact,when you are using the tcp/ip communication,this parameter will be ignored,that is any integer will all right.Here we use 1.
            if (axCZKEM1.RegEvent(iMachineNumber, 65535))//Here you can register the realtime events that you want to be triggered(the parameters 65535 means registering all)
            {
                this.axCZKEM1.OnFinger += new zkemkeeper._IZKEMEvents_OnFingerEventHandler(axCZKEM1_OnFinger);
                this.axCZKEM1.OnVerify += new zkemkeeper._IZKEMEvents_OnVerifyEventHandler(axCZKEM1_OnVerify);
                this.axCZKEM1.OnAttTransactionEx += new zkemkeeper._IZKEMEvents_OnAttTransactionExEventHandler(axCZKEM1_OnAttTransactionEx);
                this.axCZKEM1.OnFingerFeature += new zkemkeeper._IZKEMEvents_OnFingerFeatureEventHandler(axCZKEM1_OnFingerFeature);
                this.axCZKEM1.OnEnrollFingerEx += new zkemkeeper._IZKEMEvents_OnEnrollFingerExEventHandler(axCZKEM1_OnEnrollFingerEx);
            }
        }