达code，不执行和退出，没有错误 [英] Reaches code, doesn't execute and exits without error

问题描述

我所有的code正常工作了这一点：

All my code works fine up to this point:

using System.Diagnostics;

namespace WebPortalLogging
{
    public static class EventLogging
    {
    public static void LogEvent(string origin, string message, EventLogEntryType eventLogEntryType, int eventId)
        {
      const string source = "Software";
            const string log = "Application";

            if (!EventLog.SourceExists(source))
                 EventLog.CreateEventSource(source, log);
      EventLog.WriteEntry(source, message, eventLogEntryType, eventId);      
        }
    }
}

我甚至使用这个类中的其他项目，它工作正常。当它击中这一行：

I even use this class in another project and it works fine. When it hits this line:

如果（！EventLog.SourceExists（源））             EventLog.CreateEventSource（源，日志）;

if (!EventLog.SourceExists(source)) EventLog.CreateEventSource(source, log);

它击中这一行并退出。

下面是什么东西在我的输出：

Here is what is in my output:

The thread 'vshost.NotifyLoad' (0x28c) has exited with code 0 (0x0).
The thread 'vshost.LoadReference' (0x470) has exited with code 0 (0x0).
'VmBackup.vshost.exe' (Managed (v4.0.30319)): Loaded 'D:\Google Drive\Code\VMBackup\VMBackup\bin\Debug\VmBackup.exe', Symbols loaded.
'VmBackup.vshost.exe' (Managed (v4.0.30319)): Loaded 'D:\Google Drive\Code\VMBackup\VMBackup\bin\Debug\WebPortalLogging.dll', Symbols loaded.
The thread '<No Name>' (0xa44) has exited with code 0 (0x0).
'VmBackup.vshost.exe' (Managed (v4.0.30319)): Loaded 'C:\Windows\Microsoft.Net\assembly\GAC_MSIL\System.Configuration\v4.0_4.0.0.0__b03f5f7f11d50a3a\System.Configuration.dll', Skipped loading symbols. Module is optimized and the debugger option 'Just My Code' is enabled.
The thread '<No Name>' (0x107c) has exited with code 0 (0x0).
The thread '<No Name>' (0x1838) has exited with code 0 (0x0).
The thread 'vshost.RunParkingWindow' (0xa78) has exited with code 0 (0x0).
The thread '<No Name>' (0x10e0) has exited with code 0 (0x0).
The program '[6436] VmBackup.vshost.exe: Program Trace' has exited with code 0 (0x0).
The program '[6436] VmBackup.vshost.exe: Managed (v4.0.30319)' has exited with code 0 (0x0).

有未到达EventLog.WriteEntry。它不输出到事件日志任。我重新启动VS2010，并没有帮助。我已经提示，在所有的错误开启。

It doesn't reach the EventLog.WriteEntry. It is not outputting to the event log either. I've restarted VS2010 and that didn't help. I have prompt at all errors turned on.

我在想什么？

推荐答案

首先，我会用括号圆你的条件，因为它是一个有点不清楚，如果事件日志应该写的条目，事件日志可是没有一个来源。

Firstly I would use braces round your conditional as it is a little unclear if EventLog should Write the entry if EventLog doesnt have a Source.

if (!EventLog.SourceExists(source)) 
{
   EventLog.CreateEventSource(source, log); 
}

  EventLog.WriteEntry(source, message, eventLogEntryType, eventId);  

也可以尝试，把它包在的try / catch 块，看看你得到任何未处理的异常是程序导致随机退出。

Also try and wrap it in an try/catch block to see if you get any unhandled exception which is causing the program to randomly exit.

try {

     if (!EventLog.SourceExists(source)) 
     {
           EventLog.CreateEventSource(source, log);
     }

     EventLog.WriteEntry(source, message, eventLogEntryType, eventId);  

} catch (Exception e)
  {
     Console.WriteLine(e);
  }

其它：线程vshost.NotifyLoad（0x28c）已退出与code 0（为0x0）。 线程vshost.LoadReference（0x470）已退出与code 0（为0x0）。不是错误。 Visual Studio是告诉你，一个后台线程已退出。 0表示线程运行成功。

Additional: The thread 'vshost.NotifyLoad' (0x28c) has exited with code 0 (0x0). The thread 'vshost.LoadReference' (0x470) has exited with code 0 (0x0). are not errors. Visual Studio is telling you that a background thread has exited. 0 indicates the thread ran successfully.

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