C # using/configuring Log4net

1. First add NuGet packages to your project ...

2. Then search for log4net in the NuGet form, then click Install < Install the process may last for a few minutes, please be patient >

3. Add a config file to your project, if you already have an app. config, add content directly to it:

The XML code in the configuration is as follows:

  <log4net>    <Loggername= "Logerror">      < Levelvalue= "ERROR" />      <Appender-refref= "Errorappender" />    </Logger>    <Loggername= "Loginfo">      < Levelvalue= "INFO" />      <Appender-refref= "Infoappender" />    </Logger>    <Appendername= "Errorappender"type= "log4net." Appender.rollingfileappender ">      <paramname= "File"value= "Log\\logerror\\" />      <paramname= "Appendtofile"value= "true" />      <paramname= "Maxsizerollbackups"value= "+" />      <paramname= "MaxFileSize"value= "10240" />      <paramname= "Staticlogfilename"value= "false" />      <paramname= "Datepattern"value= "Yyyymmdd&quot;". txt&quot; " />      <paramname= "Rollingstyle"value= "Date" />      <Layouttype= "log4net." Layout.patternlayout ">        <paramname= "Conversionpattern"value= "%n exception time:%d%n exception level:%-5p%n exception content:%m%n" />      </Layout>      <!--&lt; &gt; = <>%n = Enter -    </Appender>    <Appendername= "Infoappender"type= "log4net." Appender.rollingfileappender ">      <paramname= "File"value= "log\\loginfo\\" />      <paramname= "Appendtofile"value= "true" />      <paramname= "MaxFileSize"value= "10240" />      <paramname= "Maxsizerollbackups"value= "+" />      <paramname= "Staticlogfilename"value= "false" />      <paramname= "Datepattern"value= "Yyyymmdd&quot;". txt&quot; " />      <paramname= "Rollingstyle"value= "Date" />      <Layouttype= "log4net." Layout.patternlayout ">        <paramname= "Conversionpattern"value= "Log time:%d%n log level:%-5p%n Log content:%m%n%n" />      </Layout>    </Appender>  </log4net>

Finally, register the config file in the project's AssemblyInfo.cs file as follows:

Register the Log4net.config configuration file for the project [Assembly:log4net. Config.xmlconfigurator (configfileextension = "config", Watch = True)]

Finally, add the log class:

     Public classLoghelper {PrivateLoghelper () {} Public Static ReadOnlyLog4net. ILog loginfo = log4net. Logmanager.getlogger ("Loginfo");  Public Static ReadOnlyLog4net. ILog logerror = log4net. Logmanager.getlogger ("Logerror");  Public Static voidSetconfig () {log4net.        Config.XmlConfigurator.Configure (); }         Public Static voidsetconfig (FileInfo configfile) {log4net.        Config.XmlConfigurator.Configure (ConfigFile); }         Public Static voidWritelog (stringinfo) {            if(Loginfo. isinfoenabled) {Loginfo.            info (info); }        }         Public Static voidWritelog (stringinfo, Exception se) {            if(Logerror. iserrorenabled) {Logerror.            Error (info, SE); }        }    }

Well, when we get here, the preparation is done, so let's start the test.

The log file is logged by default in the root directory and the path can be changed in config

C # using/configuring Log4net