log4net配置

1.添加log4net.dll引用
2.在项目根目录下新建log4net.xml

log4net.xml
<?xml version="1.0" encoding="utf-8" ?>
<log4net>

 <root>
  <level value="DEBUG" />
  <appender-ref ref="LogFileAppender" />
 </root>

 <appender name="LogFileAppender" type="log4net.Appender.FileAppender" >
  <param name="File" value="c:\ehailog.txt" />
  <param name="AppendToFile" value="true" />

  <layout type="log4net.Layout.PatternLayout">
   <param name="ConversionPattern" value="%-5p  %d    %c   %m%n"/>
  </layout>

 </appender>

</log4net>

3.在AssemblyInfo.cs中添加
[assembly: log4net.Config.DOMConfigurator(ConfigFile = "log4net.xml", Watch = true)]

4.在程序中声明
private static readonly ILog logger = LogManager.GetLogger(typeof(类));

logger.Info("开始备份数据.");

 

 

日志级别由高往低依次是:
None
Fatal
ERROR
WARN
DEBUG
INFO
ALL