c#使用log4Net配置日志文件

1.# 写一个通用类 LogHelper

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using log4net;namespace WindowsFormsApplication22
{public class LogHelper{static ILog mylog = LogManager.GetLogger(typeof(LogManager));//创建列表，存储日志信息public static List<Record> fatal_list = new List<Record>();public static List<Record> error_list = new List<Record>();public static List<Record> info_list = new List<Record>();public static List<Record> debug_list = new List<Record>();public static List<Record> warning_list = new List<Record>();//报警等级分5 个public static void WriteFitle(object obj){mylog.Fatal(obj);fatal_list.Add(new Record() { Id=fatal_list.Count+1,Name=obj.ToString(),datatime=DateTime.Now});}public static void WriteError(object obj){mylog.Error(obj);error_list.Add(new Record() { Id = error_list.Count, Name = obj.ToString(), datatime = DateTime.Now });}public static void WriteInfo(object obj){mylog.Info(obj);info_list.Add(new Record() { Id = info_list.Count, Name = obj.ToString(), datatime = DateTime.Now });}public static void WriteDebug(object obj){mylog.Debug(obj);debug_list.Add(new Record() { Id=debug_list.Count,Name=obj.ToString(),datatime=DateTime.Now});}public static void WriteWarning(object obj){mylog.Warn(obj);warning_list.Add(new Record() { Id = warning_list.Count, Name = obj.ToString(), datatime = DateTime.Now });}}public class Record{public int Id { get; set; }public string Name { get; set; }public DateTime datatime { get; set; }}
}

2.配置文件信息 App.config

<?xml version="1.0" encoding="utf-8" ?>
<configuration><configSections><section name="log4net" type="log4net.Config.Log4NetConfigurationSectionHandler, log4net" /></configSections><log4net><root><level value="DEBUG" /><appender-ref ref="RollingFileAppender" /></root><appender name="RollingFileAppender" type="log4net.Appender.RollingFileAppender"><file type="log4net.Util.PatternString"  value="Logs\%date{yyyy--MM--dd}.log"/><appendToFile value="true" /><maximumFileSize value="5KB"></maximumFileSize><maxSizeRollBackups values="5"></maxSizeRollBackups><layout type="log4net.Layout.PatternLayout"><conversionPattern value="日志时间:  %date    线程:[%thread]     日志级别：%-5level      记录信息: %message%newline" /></layout></appender></log4net><startup> <supportedRuntime version="v4.0" sku=".NETFramework,Version=v4.6" /></startup>
</configuration>

3界面测试，首先加载界面配置文件：

  log4net.Config.XmlConfigurator.Configure(); //加载配置文件

using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using System.Windows.Forms;namespace WindowsFormsApplication22
{public partial class Form1 : Form{public Form1(){InitializeComponent();}private void Form1_Load(object sender, EventArgs e){log4net.Config.XmlConfigurator.Configure(); //加载配置文件LogHelper.WriteFitle("致命错误1");LogHelper.WriteFitle("致命错误2");LogHelper.WriteFitle("致命错误3");LogHelper.WriteFitle("致命错误4");LogHelper.WriteFitle("致命错误5");LogHelper.WriteInfo("普通一条信息1");LogHelper.WriteInfo("普通一条信息2");LogHelper.WriteInfo("普通一条信息3");LogHelper.WriteError("错误信息1");LogHelper.WriteError("错误信息2");LogHelper.WriteError("错误信息3");LogHelper.WriteError("错误信息3");LogHelper.WriteDebug("Debug 输出1");LogHelper.WriteDebug("Debug 输出2");LogHelper.WriteDebug("Debug 输出3");LogHelper.WriteWarning("提示信息1");LogHelper.WriteWarning("提示信息2");LogHelper.WriteWarning("提示信息3");LogHelper.WriteWarning("提示信息4");}private void buttonDebug_Click(object sender, EventArgs e){this.dataGridView1.DataSource = LogHelper.debug_list;}private void buttonWarning_Click(object sender, EventArgs e){this.dataGridView1.DataSource = LogHelper.warning_list;}private void buttonInfo_Click(object sender, EventArgs e){this.dataGridView1.DataSource = LogHelper.info_list;}private void buttonFatals_Click(object sender, EventArgs e){this.dataGridView1.DataSource = LogHelper.fatal_list;}}
}

运行效果：