C#窗口事件查看器

Question

我想在Windows事件查看器中使用带有EventLogAppender的log4net记录我的C#应用程序的错误（错误必须记录在Application log下），我有一个log4net.config类，里面有这样的代码。

<configuration>
<configSections>
    <section name="log4net" type="log4net.Config.Log4NetConfigurationSectionHandler, log4net, Version=2.0.8.0, Culture=neutral, PublicKeyToken=669e0ddf0bb1aa2a" />
</configSections>
  <log4net>
   <appender name="EventLogAppender" type="log4net.Appender.EventLogAppender">
       <applicationName value="MySource" />
       <layout type="log4net.Layout.PatternLayout">
         <conversionPattern value="{%level} {%date} – %message%newline" />
       </layout>
    </appender>

  <root>
     <level value="DEBUG" />
     <appender-ref ref="EventLogAppender" />
  </root>
  </log4net>
</configuration>

在AssemblyInfo中，我添加了以下一行

[assembly: log4net.Config.XmlConfigurator(ConfigFile = "log4net.config", Watch=true)]

然后在我的程序班

class Program
{
  static log4net.ILog log = log4net.LogManager.GetLogger(System.Reflection.MethodBase.GetCurrentMethod().DeclaringType);

  static void Main(string[] args)
  {
     string name=null;
     try
     {
         Console.WriteLine("Name : " + name.ToString());
     }
     catch (NullReferenceException nullException)
     {
        log.Error("Name is NULL", nullException);
     }
}
}

我不得不提的是，我使用power shell创建了一个名为 "MySource "的新EventLog。

问题是我收到以下错误。

log4net:ERROR Could not create Appender [EventLogAppender] of type [log4net.Appender.EventLogAppender]. Reported error follows.
System.TypeLoadException: Could not load type 'log4net.Appender.EventLogAppender' from assembly 'log4net, Version=2.0.8.0, Culture=neutral, PublicKeyToken=669e0ddf0bb1aa2a'.
   at System.Reflection.RuntimeAssembly.GetType(QCallAssembly assembly, String name, Boolean throwOnError, Boolean ignoreCase, ObjectHandleOnStack type, ObjectHandleOnStack keepAlive, ObjectHandleOnStack assemblyLoadContext)
   at System.Reflection.RuntimeAssembly.GetType(String name, Boolean throwOnError, Boolean ignoreCase)
   at log4net.Util.SystemInfo.GetTypeFromString(Assembly relativeAssembly, String typeName, Boolean throwOnError, Boolean ignoreCase)
   at log4net.Repository.Hierarchy.XmlHierarchyConfigurator.ParseAppender(XmlElement appenderElement)
log4net:ERROR Appender named [EventLogAppender] not found.

Answer 1

最新版本的log4net (2.0.8截止到今天)是执行.net标准1.3的。https:/logging.apache.orglog4netreleaserelease-notes.html。.

在.net标准1.3中 EventLogAppender 不支持。https:/logging.apache.orglog4netreleaseframework-support.html#netstandard-1.3。

如果你想使用 EventLogAppender，你将不得不切换到.net框架。