Log4Net教學

Step1:下載Log4Net參考套件

至Log4net 網站: http://logging.apache.org/log4net/ 

找到 Download 下載

Step2:建立log4net.config的xml檔

首先我們要先設定 log4net.config 檔，在專案中加入一個XML檔案並且將檔名修改成 log4net.config

log4net.config檔案內容

<?xml version="1.0" encoding="utf-8" ?>
<configuration>
  <configSections>
    <section name="log4net" type="log4net.Config.Log4NetConfigurationSectionHandler, log4net" />
  </configSections>
  
  <log4net>
    <appender name="Console" type="log4net.Appender.ConsoleAppender">
      <layout type="log4net.Layout.PatternLayout">
        <!-- Pattern to output the caller's file name and line number -->
        <conversionPattern value="%date %-5level [%thread] (%file:%line) - %message%newline" />
      </layout>
    </appender>

    <!-- 寫入文字檔設定開始 -->
    <appender name="RollingFile" type="log4net.Appender.RollingFileAppender">
      <file value="TLog\Log_Result.log" />
      <appendToFile value="true" />
      <maximumFileSize value="100KB" />
      <maxSizeRollBackups value="2" />

      <layout type="log4net.Layout.PatternLayout">
        <conversionPattern value="%date %level %thread %logger - %message%newline" />
      </layout>
    </appender>
    <!-- 寫入文字檔設定結束 -->

    <root>
      <level value="DEBUG" />
      <appender-ref ref="Console" />
      <appender-ref ref="RollingFile" />
    </root>

  </log4net>
</configuration>

Step3:C＃檔內容

using System;
using System.Collections.Generic;
using System.Linq;
using System.Web;
using System.Web.UI;
using System.Web.UI.WebControls;
using log4net;
using log4net.Config;

public partial class _Default : System.Web.UI.Page
{

    private static readonly ILog TxtLog = LogManager.GetLogger(typeof(_Default));

    protected void Page_Load(object sender, EventArgs e)
    {
        XmlConfigurator.Configure(new System.IO.FileInfo(Server.MapPath("~/log4net.config")));
        TxtLog.Info("Page_Load_Start");

        TxtLog.Debug("Page_Load_Debug");

        TxtLog.Info("Page_Load_End");
    }
}