Log4net配置之Winform项目

具体方法如下：

一、App.config配置

<?xml version="1.0" encoding="utf-8" ?>
<configuration>
    <configSections>
        <section name="log4net" type="System.Configuration.IgnoreSectionHandler" />
    </configSections>
    <startup>
        <supportedRuntime version="v4.0" sku=".NETFramework,Version=v4.5" />
    </startup>
    <appSettings>
        <!--压缩文件解压路径-->
        <add value="D:\FileCompare" key="FileCompare"/>
    </appSettings>
    <log4net>
        <appender name="RollingLogFileAppender" type="log4net.Appender.RollingFileAppender">
            <param name="File" value="Errorlogs\ErrorLog.txt"/>
            <param name="AppendToFile" value="true"/>
            <param name="MaxSizeRollBackups" value=""/>
            <param name="MaximumFileSize" value="8096KB"/>
            <param name="RollingStyle" value="Size"/>
            <param name="StaticLogFileName" value="true"/>
            <layout type="log4net.Layout.PatternLayout">
                <!--<param name="Header" value="[Header]\r\n"/>
        <param name="Footer" value="[Footer]\r\n"/>-->
                <param name="ConversionPattern" value="%d %-5p %c  %m%n"/>
            </layout>
        </appender>
        <root>
            <level value="ALL"/>
            <appender-ref ref="RollingLogFileAppender"/>
        </root>
    </log4net>
</configuration>

二、form.cs中调用：初始化Log

 private void btnSelect_Click(object sender, EventArgs e)
        {
            ILog log = LogManager.GetLogger("Error");
}

三、Assmbely.cs配置

//[assembly: log4net.Config.XmlConfigurator(Watch = true, ConfigFile = "Log4Net.config")]
// 日志组件配置
//[assembly: log4net.Config.DOMConfigurator(ConfigFile = "Log4Net.config", Watch = true)]
[assembly: log4net.Config.XmlConfigurator(ConfigFileExtension = "config", Watch = true)]

　　

别忘了引入log4net.dll

如果出现“App.config提示错误“配置系统未能初始化”

解决方案：

"如果配置文件中包含 configSections 元素，则 configSections 元素必须是 configuration 元素的第一个子元素。"所以它前面如果有connectionStrings或其它节点，必须把connectionStrings放到它的后面。

WebForm  配置log4net

Global.asax

   // log4net日志配置
            FileInfo file = new FileInfo(AppDomain.CurrentDomain.BaseDirectory + "Log4Net.config");
            log4net.Config.XmlConfigurator.Configure(file);
            // end of log4net日志配置