C# winfrom log4net日志配置

首先创建一个config

<?xml version="1.0" encoding="utf-8" ?> <configuration>     <startup>         <supportedRuntime version="v4.0" sku=".NETFramework,Version=v4.6.1" />     </startup>

  <configSections>     <section name="log4net" type="log4net.Config.Log4NetConfigurationSectionHandler,log4net" />   </configSections>   <log4net>     <logger name="logerror">       <level value="ERROR" />       <appender-ref ref="ErrorAppender" />     </logger>     <logger name="loginfo">       <level value="INFO" />       <appender-ref ref="InfoAppender" />     </logger>     <appender name="ErrorAppender" type="log4net.Appender.RollingFileAppender">       <param name="File" value="Log\LogError\" />       <param name="AppendToFile" value="true" />       <param name="MaxSizeRollBackups" value="100" />       <param name="MaxFileSize" value="10240" />       <param name="StaticLogFileName" value="false" />       <param name="DatePattern" value="yyyyMMdd&quot;.txt&quot;" />       <param name="RollingStyle" value="Date" />       <layout type="log4net.Layout.PatternLayout">         <param name="ConversionPattern" value="%n异常时间：%d %n异常级别：%-5p%n异常内容：%m%n" />       </layout>       <!--&lt; &gt; = <> %n = 回车-->     </appender>     <appender name="InfoAppender" type="log4net.Appender.RollingFileAppender">       <param name="File" value="Log\LogInfo\" />       <param name="AppendToFile" value="true" />       <param name="MaxFileSize" value="10240" />       <param name="MaxSizeRollBackups" value="100" />       <param name="StaticLogFileName" value="false" />       <param name="DatePattern" value="yyyyMMdd&quot;.txt&quot;" />       <param name="RollingStyle" value="Date" />       <layout type="log4net.Layout.PatternLayout">         <param name="ConversionPattern" value="日志时间：%d %n日志级别：%-5p  %n日志内容：%m%n%n" />       </layout>     </appender>   </log4net>

</configuration>

在Properties-Assemblyinfo.cs中的最下方注册下日志

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

将代码复制在最下方，可以根据自己的需求更改配置

在需要使用的地方声明下log4net类

注：using log4net

loginfo = log4net.LogManager.GetLogger("loginfo");

在需要输出log的地方写上

loginfo.Info(info)

_________helper_______

using System; using System.Collections.Generic; using System.IO; using System.Linq; using System.Text; using System.Threading.Tasks; using log4net; namespace WindowsFormsApp1 {     public class LogHelper     {         private LogHelper()         {

        }

        public static readonly log4net.ILog loginfo = log4net.LogManager.GetLogger("loginfo");

        public static readonly log4net.ILog logerror = log4net.LogManager.GetLogger("logerror");

        public static void SetConfig()         {             log4net.Config.XmlConfigurator.Configure();         }

        public static void SetConfig(FileInfo configFile)         {             log4net.Config.XmlConfigurator.Configure(configFile);         }

        public static void WriteLog(string info)         {             if (loginfo.IsInfoEnabled)             {                 loginfo.Info(info);             }         }

        public static void WriteLog(string info, Exception se)         {             if (logerror.IsErrorEnabled)             {                 logerror.Error(info, se);             }         }     } }