带有EventLogAppender的log4net不会记录

Question

以下配置没有任何反应.

App.config中

<?xml version="1.0" encoding="utf-8" ?>
<configuration>
  <configSections>
    <section name="log4net" type="log4net.Config.Log4NetConfigurationSectionHandler, log4net"/>
  </configSections>
    <startup> 
        <supportedRuntime version="v4.0" sku=".NETFramework,Version=v4.5" />
    </startup>
  <log4net>
    <appender name="EventLogAppender" type="log4net.Appender.EventLogAppender" >
      <layout type="log4net.Layout.PatternLayout">
        <conversionPattern value="%date [%thread] %-5level %logger [%property{NDC}] - %message%newline" />
      </layout>
    </appender>
  </log4net>
</configuration>

Form1.cs(示例)

public partial class Form1 : Form
{
    private static readonly ILog log = LogManager.GetLogger(MethodBase.GetCurrentMethod().DeclaringType);

    public Form1()
    {
        InitializeComponent();

        log.Fatal("Test!");
    }
}

Answer 1

您缺少根配置,因此您需要类似的东西

<?xml version="1.0" encoding="utf-8" ?>
<configuration>
  <configSections>
      <section name="log4net" type="log4net.Config.Log4NetConfigurationSectionHandler, log4net"/>
  </configSections>
  <startup>
      <supportedRuntime version="v4.0" sku=".NETFramework,Version=v4.5"/>
  </startup>
  <log4net debug="true">
      <appender name="EventLogAppender" type="log4net.Appender.EventLogAppender" >
        <applicationName value="MyApp" />
        <layout type="log4net.Layout.PatternLayout">
          <conversionPattern value="%date [%thread] %-5level %logger [%property{NDC}] - %message%newline" />
        </layout>
      </appender>


      <root>
        <level value="All" />
        <appender-ref ref="EventLogAppender" />
      </root>


  </log4net>
</configuration>

另请注意,如果您的程序名为app.exe,则需要一个名为app.exe的事件日志源.如果这不存在,则Log4net将尝试创建它,但这需要管理员权限,因此您可能需要以管理员身份运行您的程序至少一次才能创建此事件源.为避免这种情况,通常会将事件源创建为已作为admin运行的安装过程的一部分.

Answer 2

你应该添加:

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

在项目的AssemblyInfo.cs中.这将初始化记录器.并将log4net放入名为log4net.config的文件中.