1、在需要輸出日誌的程序集的AssemblyInfo.cs中添加如下代碼
/// <summary>
///Log4Net 的摘要說明
/// </summary>
//注意下面的語句一定要加上,指定log4net使用.config文件來讀取配置信息
//如果是WinForm(假定程序爲MyDemo.exe,則需要一個MyDemo.exe.config文件)
//如果是WebForm,則從web.config中讀取相關信息
[assembly: log4net.Config.XmlConfigurator(Watch = true)]
2、在web.config或App.config中添加如下配置
<configSections>
<section name="log4net" type="log4net.Config.Log4NetConfigurationSectionHandler, log4net" />
</configSections>
<log4net>
<appender name="RollingFileAppender" type="log4net.Appender.RollingFileAppender">
<file value="Logs/Log.txt" />
<appendToFile value="true" />
<rollingStyle value="Date" />
<maxSizeRollBackups value="3" />
<datePattern value="yyyy-MM-dd" />
<layout type="log4net.Layout.PatternLayout">
<conversionPattern value="%-5level %date [%-5.5thread] %-40.40logger - %message%newline" />
</layout>
</appender>
<root>
<!--
ALL
DEBUG
INFO
WARN
RROR
FATAL
OFF
-->
<level value="ALL" />
<appender-ref ref="RollingFileAppender" />
</root>
</log4net>