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我遇到了一个问题，需要知道是否有人遇到过。我编写了 ac# windows 服务，它调用 Web 服务 (asmx) 来执行某些功能。该服务在本地机器上部署时似乎运行良好。但是当它在远程开发测试环境（Win server 2003）中部署和运行时，它会抛出一个错误，捕获为下面的事件日志。

" 找不到源 (.NET 运行时 4.0 错误报告) 中事件 ID (5000) 的描述。本地计算机可能没有必要的注册表信息或消息 DLL 文件来显示来自远程计算机的消息。您可以使用 /AUXSOURCE= 标志来检索此描述；有关详细信息，请参阅帮助和支持。以下信息是事件的一部分：clr20r3, yllddkcpf0zkiftk0gcwtfigwkqck35d, 1.0.0.0, 50069cd9, tpplc.intranet.applications.incidentreporting.emailingservice, 1.0.0.0 , 50069cd9, d, 18a, system.nullreferenceexception, NIL。”

以下是代码片段的剥离但相关版本。

服务的启动 -</p> 

      protected override void OnStart(string[] args)
      {

      try

       {           
         //Some initialization code
            …
            …

        //Start the thread to notify email recipients.
            emailThread = new Thread(NotifyRecipients);
            emailThread.Start();
        }
 }


 private void NotifyRecipients()

 {          
 //Now call the web service to fetch the execution time which is actually set from the web app.


       GetEmailSchedule();           

        while (true)
        {                
            // Some Logic               

            //Send email only on the scheduled time of the day AND if the current time matches the 
            //email scheduled time OR if the current hour is greater than the scheduled hour.
            if ((DateTime.Now.TimeOfDay >= executionTime) && (!EmailSent))
            {
                SendMail();// In this method call Email is sent and the EmailSent flag is set to true.
            }
        }
    }

    private void GetEmailSchedule()

     {            
      try
          {                
            LogModule.LogDebug("Calling WebMethod instance to get Email Schedule");

            EmailService.IncidentDetails emailSchedule = new EmailService.IncidentDetails();// Place of error

            emailSchedule.UseDefaultCredentials = true;
            LogModule.LogDebug("Calling WebMethod to get Email Schedule");
            string schedule = emailSchedule.GetEmailSchedule();
            if (string.IsNullOrEmpty(schedule.Trim()))
            {
                //Get the default time from the app.config file to send emails to recipients.

            }
            else
            {
                //Get the individual time components
                string[] scheduleSplit = schedule.Split(',');
                executionHour = Convert.ToInt32(scheduleSplit[0].Trim());
                executionMinute = Convert.ToInt32(scheduleSplit[1].Trim());
            }

            executionTime = new TimeSpan(executionHour, executionMinute, 0);


            //Check if the retrieved exeuction hour or minute has changed from its last execution so that
            //emailsent flag can be reset and email can be sent in the new schedule again.
            if (executionHour != ExecutedHour || executionMinute != ExecutedMinute)
            {
                EmailSent = false;
            }
        }
        catch (Exception ex)
        {
            LogModule.LogError("Error Occurred: " + ex.Message + " ; Inner Exception: " + ex.InnerException.ToString());
            LogEvent("Error Occurred: " + ex.Message + " ; Inner Exception: " + ex.InnerException.ToString(), EventLogEntryType.Error);
            SendExceptionMail(ex);
        }
    }

通过添加自定义日志进行调试后，我意识到这发生在实例化 Web 服务以调用 GetEmailSchedule() 方法中的 Web 方法时，即 EmailService.IncidentDetails emailSchedule = new EmailService.IncidentDetails();

不知道为什么会这样。任何帮助将不胜感激。

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1 回答 1

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它看起来不是您的 Web 服务的问题。在 LogEvent 方法中发布记录事件的代码。此错误是由于将事件记录在不可用的日志源中。

于 2012-07-25T12:36:35.763 回答