winform中打log

1.下载log4net （Google log4net）   
2.unzip log4net 
3.运行VS,新建 c# Windows应用程序。 
4.添加引用Log4NET  
5.新建一个应用程序配置文件App.config（具体内容附在后面） 
6.打开Form1.cs，  
  在Namespace上添加一行  [assembly: log4net.Config.DOMConfigurator(Watch=true)] 
（或者 编辑Assembly.cs文件,添加如下内容: 
[assembly:log4net.Config.DOMConfigurator( ConfigFileExtension="config",Watch=true)] ） 
  在类Form1中添加一个静态变量  
                private static readonly log4net.ILog log = log4net.LogManager.GetLogger(System.Reflection.MethodBase.GetCurrentMethod().DeclaringType);   
7.添加一个按钮。在按钮处理函数中添加一行 log.Warn("你好！");   
8.运行程序。点一下按钮。 
OK,打开Bin\Debug\log-file.txt，可以看到“你好”。 
附.App.config 
<?xml version="1.0" encoding="utf-8" ?> 
<configuration> 
<!-- Register a section handler for the log4net section --> 
<configSections>  
  <section name="log4net" type="System.Configuration.IgnoreSectionHandler" /> 
</configSections> 
<appSettings>  
  <!-- To enable internal log4net logging specify the following appSettings key -->  
  <!-- <add key="log4net.Internal.Debug" value="true"/> -->  
</appSettings> 
<!-- This section contains the log4net configuration settings --> 
<log4net>  
  <!-- Define some output appenders -->  
  <appender name="LogFileAppender" type="log4net.Appender.FileAppender">  
    <param name="File" value="log-file.txt" />  
    <!-- Example using environment variables in params -->  
    <!-- <param name="File" value="${TMP}\\log-file.txt" /> -->  
    <param name="AppendToFile" value="true" />  
    <!-- An alternate output encoding can be specified -->  
    <!-- <param name="Encoding" value="unicodeFFFE" /> -->  
    <layout type="log4net.Layout.PatternLayout">  
    <param name="Header" value="[Header]\r\n" />  
    <param name="Footer" value="[Footer]\r\n" />  
    <param name="ConversionPattern" value="%d [%t] %-5p %c [%x] <%X{auth}> - %m%n" />  
    </layout>  
    <!-- Alternate layout using XML     
    <layout type="log4net.Layout.XMLLayout" /> -->  
  </appender>  

<!-- Setup the root category, add the appenders and set the default level -->  
  <root>  
    <level value="ALL" />  
    <appender-ref ref="LogFileAppender" />  
    <!-- <appender-ref ref="A" /> -->  
  </root>  
  <!-- Specify the level for some specific categories -->  
  <logger name="SLog4net.Form1">  
    <!-- <appender-ref ref="B" /> -->  
    <level value="ALL" />  
    <appender-ref ref="RollingLogFileAppender" />  
  </logger> 
</log4net> 
</configuration>  
  

//调用------------------------------------------------------------  
using System;  
using System.Collections.Generic;  
using System.ComponentModel;  
using System.Data;  
using System.Drawing;  
using System.Text;  
using System.Windows.Forms;  
using log4net;  
[assembly: log4net.Config.DOMConfigurator(Watch = true)]  
namespace WindowsApplication1  
{  
    public partial class Form1 : Form  
 
    {  
 
        public Form1()  
 
        {  
 
            InitializeComponent();  
 
        }  
 
 
        private static readonly log4net.ILog log = log4net.LogManager.GetLogger(System.Reflection.MethodBase.GetCurrentMethod().DeclaringType);  
        private void button1_Click(object sender, EventArgs e)  
 
        {  
 
            log.Warn("你好！");  
  
        }  
 
    }

 

 

作者：officer