<log4net> 
  <!-- Define some output appenders --> 
  <appendernameappendername="RollingLogFileAppender"type="log4net.Appender.RollingFileAppender"> 
   <file value="test.txt"/> 
   <appendToFilevalueappendToFilevalue="true"/> 
   <maxSizeRollBackupsvaluemaxSizeRollBackupsvalue="10"/> 
   <maximumFileSizevaluemaximumFileSizevalue="1024KB"/> 
   <rollingStylevaluerollingStylevalue="Size"/> 
   <staticLogFileNamevaluestaticLogFileNamevalue="true"/> 
   <layouttypelayouttype="log4net.Layout.PatternLayout"> 
    <conversionPattern value="%date[%thread] %-5level %logger - %message%newline"/> 
   </layout> 
  </appender> 
  <root> 
   <level value="DEBUG"/> 
   <appender-refrefappender-refref="RollingLogFileAppender"/> 
  </root> 
 </log4net> 

<pre code_snippet_id="2146508" snippet_file_name="blog_20170123_2_6827063" name="code" class="csharp">namespace Log4NetDemo 
{ 
  class Program 
  { 
    static void Main(string[] args) 
    { 
      //使用log4net记录日志。 
      log4net.Config.XmlConfigurator.Configure(); 
  
      ILog logWriter =log4net.LogManager.GetLogger("Test"); 
  
       logWriter.Info("消息"); 
      logWriter.Warn("警告"); 
      logWriter.Error("异常"); 
      logWriter.Fatal("错误"); 
 } }} 
</pre> 
<pre></pre> 
<p>  </p> 
<h1><a name="t2"></a><strong><span style="font-family:SimHei; font-size:18px"> 三、Appender</span></strong></h1> 
<strong><span style="font-family:SimHei; font-size:18px">  可以在配置文件中使用Log4net的Appender方法进行优化；</span></strong> 
<pre></pre> 
<pre code_snippet_id="2146508" snippet_file_name="blog_20170123_2_6827063" name="code" class="csharp"><strong><span style="font-family:SimHei; font-size:18px"><img src="http://img.blog.csdn.net/20170123115415135?watermark/2/text/aHR0cDovL2Jsb2cuY3Nkbi5uZXQvV0tYMTgzMzA2OTg1MzQ=/font/5a6L5L2T/fontsize/400/fill/I0JBQkFCMA==/dissolve/70/gravity/Center" alt=""> 
 更多内容，推荐阅读： 
    <a target="_blank" href="[url=http://www.1sucai.cn/article/rel=]http://www.cnblogs.com/jiajinyi/p/5884930.html">http://www.cnblogs.com/jiajinyi/p/5884930.html</a[/url]> 
   以上是我对Log4net日志记录的简单理解，请路过的大鸟指点。</span></strong> 
<p></p></pre> 
<pre></pre>