写入事件日志时出错，导致 Windows 服务无法启动？
我使用以下代码在我的 Windows 服务应用程序中创建自定义事件日志：
public ServiceConstructor()
{
InitializeComponent();
if (!EventLog.SourceExists("WinService"))
{
EventLog.CreateEventSource("WinService", "WinServiceLog");
eventLog1.Source = "WinService";
eventLog1.Log = "WinServiceLog";
}
}
protected override void OnStart(string[] args)
{
eventLog1.WriteEntry("Started");
}
安装 service.msi 后，当我启动该服务时，它启动然后停止。然后我在EventViewer窗口日志部分发现以下错误：
服务无法启动。 System.ArgumentException：写入前未设置源属性 到事件日志。
at System.Diagnostics.EventLog.WriteEntry（字符串消息，EventLogEntryType 类型，Int32 事件ID，Int16 类别，Byte[] rawData） 在 System.Diagnostics.EventLog.WriteEntry（字符串消息） 在 WinService.Service.OnStart(String[] args) 在System.ServiceProcess.ServiceBase.ServiceQueuedMainCallback（对象状态）
I am using the following code to create a custom event log in my windows service application:
public ServiceConstructor()
{
InitializeComponent();
if (!EventLog.SourceExists("WinService"))
{
EventLog.CreateEventSource("WinService", "WinServiceLog");
eventLog1.Source = "WinService";
eventLog1.Log = "WinServiceLog";
}
}
protected override void OnStart(string[] args)
{
eventLog1.WriteEntry("Started");
}
After installing the service.msi, when i started the service it started and then stoped. Then i found the following error in EventViewer windows log section:
Service cannot be started.
System.ArgumentException: Source property was not set before writing
to the event log.
at System.Diagnostics.EventLog.WriteEntry(String message, EventLogEntryType type, Int32 eventID, Int16 category, Byte[] rawData)
at System.Diagnostics.EventLog.WriteEntry(String message)
at WinService.Service.OnStart(String[] args)
at System.ServiceProcess.ServiceBase.ServiceQueuedMainCallback(Object state)
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请尝试以下操作：
EventLog.CreateEventSource("WinService", "Application");和
eventLog1.Log = "Application";还将以下内容放入 OnStart 中：
eventLog1.Log="Application"eventLog1.Source = "WinService";Try the following:
EventLog.CreateEventSource("WinService", "Application");and
eventLog1.Log = "Application";Also put the following in OnStart:
eventLog1.Log="Application"eventLog1.Source = "WinService";如果源已经存在，则看起来您没有初始化 eventLog1.Source。
建议您将初始化代码移至 OnStart 并移出构造函数。
并将这两行移出 if 语句：
If the source already exists it looks like you don't initialize eventLog1.Source.
Suggest you move the initialization code to OnStart and out of the constructor.
And move these two lines out of the if statement: