C#: log4net

log4net.dll是apache发布的用来记录log的dll文件

这里举个例子相信大家就知道怎么用了，新建一个console项目，添加log4net.dll后再添加应用程序配置文件

 <?xml version="1.0"?>
 <configuration>
   <configSections>
     <section name="log4net" type="System.Configuration.IgnoreSectionHandler"/>
   </configSections>
   <log4net>
     <!--定义输出到文件中-->
     <appender name="RollingLogFileAppender" type="log4net.Appender.RollingFileAppender">
       <!--定义文件存放位置-->
       <file value="log\\"/>
       <appendToFile value="true"/>
       <rollingStyle value="Date"/>
       <datePattern value="yyyy\\yyyyMM\\yyyyMMdd'.txt'"/>
       <staticLogFileName value="false"/>
       <param name="MaxSizeRollBackups" value="100"/>
       <layout type="log4net.Layout.PatternLayout">
         <!--每条日志末尾的文字说明-->
         <!--输出格式-->
         <!--样例：2008-03-26 13:42:32,111 [10] INFO  Log4NetDemo.MainClass [(null)] - info-->
         <conversionPattern value="%newline %n记录时间：%date %n线程ID:[%thread] %n日志级别：  %-5level %n出错类：%logger property: [%property{NDC}] - %n错误描述：%message%newline %n"/>
       </layout>
     </appender>
     <appender name="ConsoleAppender" type="log4net.Appender.ConsoleAppender">
       <layout type="log4net.Layout.PatternLayout">
         <conversionPattern value="%date [%thread] %-5level %logger [%property{NDC}] - %message%newline"/>
       </layout>
     </appender>
     <root>
       <!--文件形式记录日志-->
       <appender-ref ref="RollingLogFileAppender"/>
       <appender-ref ref="ConsoleAppender"/>
     </root>
   </log4net>
 </configuration>

关于这个配置文件更加详细的解释可看http://blog.csdn.net/zhoufoxcn/article/details/6029021

Program.cs:

 using System;
 using System.Collections.Generic;
 using System.Linq;
 using System.Text;
 using log4net;
 using System.Reflection;

 namespace Log4NetDemo
 {
     class Program
     {
         static void Main(string[] args)
         {
             ILog log = log4net.LogManager.GetLogger(MethodBase.GetCurrentMethod().DeclaringType);

             //LogHelper.WriteLog(typeof(Program), "hello world!!");
             log.Error("error", new Exception("发生一个异常"));
             log.Fatal("fatal", new Exception("发生了一个致命错误"));
             log.Info("info");
             log.Debug("debug");
             log.Warn("warn");
             Console.WriteLine("日志记录完毕");
             Console.ReadLine();
         }
     }
 }