c# - 为什么 WriteEntry 不适用于此 EventLog 源？

我正在编写一个简单的服务并将异常和其他值得注意的项目记录到 EventLog。下面是服务的代码。不知何故，虽然我可以看到“FDaemon”日志，但我没有在其中看到任何事件。我开始和停止的事件在日志中无处可见；日志列出了 0 个事件。

using System;
using System.ComponentModel;
using System.Diagnostics;
using System.ServiceProcess;
using System.Threading;

namespace FDaemon
{
    public class EmailDigester : ServiceBase, IDebuggableService
    {
        private Timer digestTimer;
        private EmailDigesterWorker worker;
        private EventLog eventLog;

        public EmailDigester()
        {
            // fire up the event log
            this.eventLog = new System.Diagnostics.EventLog();

            ((ISupportInitialize)(this.eventLog)).BeginInit();

            this.eventLog.Source = "EmailDigester";
            this.eventLog.Log = "FDaemon";
            if (!EventLog.SourceExists(this.eventLog.Source))
            {
                EventLog.CreateEventSource(this.eventLog.Source, this.eventLog.Log);
            }

            this.AutoLog = false;
            this.ServiceName = this.eventLog.Source;

            ((ISupportInitialize)(this.eventLog)).EndInit();
        }

        public void DebugStart(string[] args)
        {
            this.OnStart(args);
        }

        protected override void OnStart(string[] args)
        {
            this.worker = new EmailDigesterWorker(1, eventLog);

            // no need to multithread, so use a simple Timer
            // note: do not take more time in the callback delegate than the repetition interval
            if (worker.RunTime.HasValue)
            {
                worker.ServiceStarted = true;
                TimerCallback work = new TimerCallback(this.worker.ExecuteTask);

                TimeSpan daily = new TimeSpan(24, 0, 0);  // repeat every 24 hrs
                TimeSpan startIn; // how much time till we start timer
                if (worker.RunTime <= DateTime.Now)
                    startIn = (worker.RunTime.Value.AddDays(1.00) - DateTime.Now); // runTime is earlier than now. we missed, so add a day to runTime
                else
                    startIn = (worker.RunTime.Value - DateTime.Now);

                this.digestTimer = new Timer(work, null, startIn, daily);
            }

            eventLog.WriteEntry("EmailDigester started.", EventLogEntryType.Information);
        }

        public void DebugStop()
        {
            this.OnStop();
        }

        protected override void OnStop()
        {
            worker.ServiceStarted = false;
            if (this.digestTimer != null)
            {
                this.digestTimer.Dispose();
            }

            eventLog.WriteEntry("EmailDigester stopped.", EventLogEntryType.Information);
        }
    }
}

最佳答案

第一:我假设您已经逐步完成并且 WriteEntry() 函数实际上确实执行了。

如果您的源 "EmailDigester" 注册了任何其他 EventLogs(例如应用程序、安全性等)，那么无论您做什么，消息都会出现在该 EventLog 中。实际上，我相信只考虑源的前 8 个字符 。

您可以通过转到注册表@进行检查:HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\Eventlog\ 并检查每个日志的来源。

您可能还考虑将源更改为随机值(您知道不会注册)并查看您的日志是否显示。

关于c# - 为什么 WriteEntry 不适用于此 EventLog 源？，我们在Stack Overflow上找到一个类似的问题：https://stackoverflow.com/questions/7116705/