1. 首先去log4net官方网站 http://logging.apache.org/log4net/download.html 下载最新版本。里面有源代码
2. 把log4net复制到你的项目里面去,引用 log4net.dll .
3. web.config 的配置
![](https://www.cnblogs.com/Images/OutliningIndicators/ContractedBlock.gif)
4. 新建 Global.asax 一个应用程序文件,写入以下代码
1
void Application_Start(object sender, EventArgs e)
2
{
3
// 在应用程序启动时运行的代码
4
5
//启动日志log4net
6
log4net.Config.XmlConfigurator.Configure();
7
}
![](https://www.cnblogs.com/Images/OutliningIndicators/None.gif)
2
![](https://www.cnblogs.com/Images/OutliningIndicators/ExpandedBlockStart.gif)
3
![](https://www.cnblogs.com/Images/OutliningIndicators/InBlock.gif)
4
![](https://www.cnblogs.com/Images/OutliningIndicators/InBlock.gif)
5
![](https://www.cnblogs.com/Images/OutliningIndicators/InBlock.gif)
6
![](https://www.cnblogs.com/Images/OutliningIndicators/InBlock.gif)
7
![](https://www.cnblogs.com/Images/OutliningIndicators/ExpandedBlockEnd.gif)
5. App_Code内创建一个myEventLog.cs,代码如下.
![](https://www.cnblogs.com/Images/OutliningIndicators/ContractedBlock.gif)
6. 在使用的页面里首先引用log4net命名空间
using log4net.CommonComponent;//引用log4net命名空间
7. 捕获异常信息并写入日志文件.
![](https://www.cnblogs.com/Images/OutliningIndicators/ContractedBlock.gif)
8. 记录日志成功
![](https://images.cnblogs.com/cnblogs_com/ziye/log4net.jpg)