网上很多配置log4net的方法,但是排行靠前的 根本就没有说明清除,导致浪费了两个小时来搞清楚如何配置,真是无语,特写此文,给那些刚接触log4net的朋友
1、参考链接：
此方法是直接将配置文件配置在app.config
第二种方式就是单独将配置文件配置在log4net.config中,网上大多数都是这种方法,但是却没有说明关键的一步
参考链接：
1. 新建一个配置文件,log4net.config配置方法同成web.config或app.config一致; 2.如果windows应用程序请把配置文件设为:复制到输出目录 修改方法:在log4net.config上右击-->属性--->把 "复制到输出目录" 值改为 true ; 3.在要用到log4的地方命名空间上边加上:[assembly: log4net.Config.XmlConfigurator(ConfigFile = "log4net.config" , Watch = true )]
2、输出到自定义Textbox日志输出
using System; using System.Collections.Generic; using System.Linq; using System.Text; using log4net.Appender; using System.Windows.Forms; using log4net.Core; using log4net.Layout; namespace log4myself { /// /// Usage: /// log4net.Config.BasicConfigurator.Configure(); /// var logPattern = "%date [%thread] %-5level %logger !%M - %message%newline"; /// var logAppender = new TextBoxBaseAppender() /// { /// TextBox = this.textBox2, /// Layout = new PatternLayout(logPattern) /// }; /// /// ((log4net.Repository.Hierarchy.Hierarchy)log4net.LogManager.GetLoggerRepository()).Root.AddAppender(logAppender); /// public class TextBoxBaseAppender : AppenderSkeleton { public TextBoxBase TextBox { get; set; } public TextBoxBaseAppender() { } protected override void Append(LoggingEvent loggingEvent) { if (this.TextBox == null) { return; } if (!this.TextBox.IsHandleCreated) { return; } if (this.TextBox.IsDisposed) { return; } var patternLayout = this.Layout as PatternLayout; var str = string.Empty; if (patternLayout != null) { str = patternLayout.Format(loggingEvent); if (loggingEvent.ExceptionObject != null) { str += loggingEvent.ExceptionObject.ToString() + Environment.NewLine; } } else { str = loggingEvent.LoggerName + "-" + loggingEvent.RenderedMessage + Environment.NewLine; } if (!this.TextBox.InvokeRequired) { printf(str); } else { this.TextBox.BeginInvoke((MethodInvoker)delegate { if (!this.TextBox.IsHandleCreated) { return; } if (this.TextBox.IsDisposed) { return; } printf(str); }); } } private void printf(string str) { //若是超过10行 则清楚 if (TextBox.Lines.Length > 50) { TextBox.Clear(); } this.TextBox.AppendText(str); } } } 在Form中使用的时候的代码为：
//读取配置文件的信息 log1 = log4net.LogManager.GetLogger(System.Reflection.MethodBase.GetCurrentMethod().DeclaringType); //设置textbox打印日志 var logPattern = "%d{yyyy-MM-dd HH:mm:ss} --%-5p-- %m%n"; var textBox_logAppender = new TextBoxBaseAppender() { TextBox = this.textBox1,//注释后 就只有文件log Layout = new PatternLayout(logPattern) }; //相当于root标签下的 3、输出到Listview代码为：
using System; using System.Collections.Generic; using System.Linq; using System.Text; using log4net.Appender; using System.Windows.Forms; using log4net.Core; using log4net.Layout; namespace log4myself { public class ListViewBaseAppender : AppenderSkeleton { public ListView listView { get; set; } public ListViewBaseAppender() { } protected override void Append(LoggingEvent loggingEvent) { if (this.listView == null) { return; } if (!this.listView.IsHandleCreated) { return; } if (this.listView.IsDisposed) { return; } var patternLayout = this.Layout as PatternLayout; var str = string.Empty; if (patternLayout != null) { str = patternLayout.Format(loggingEvent); if (loggingEvent.ExceptionObject != null) { str += loggingEvent.ExceptionObject.ToString() + Environment.NewLine; } } else { str = loggingEvent.LoggerName + "-" + loggingEvent.RenderedMessage + Environment.NewLine; } if (!this.listView.InvokeRequired) { printf(str); } else { this.listView.BeginInvoke((MethodInvoker)delegate { if (!this.listView.IsHandleCreated) { return; } if (this.listView.IsDisposed) { return; } printf(str); }); } } private void printf(string str) { if (listView.Items.Count>50) { listView.Items.Clear(); } ListViewItem item = new ListViewItem(); item.Text = str.ToString(); listView.BeginUpdate(); listView.Items.Add(item); listView.Items[listView.Items.Count - 1].EnsureVisible();//滚动到最后 listView.EndUpdate(); } } } Demo 下载：
原文链接：