Log4Net自定义appender:如何记录使用Custom appender写入的消息？

Question

问题解决了 - 我用正确的代码编辑这篇文章.

我正在尝试编写"main"函数,初始化log4net记录器+自定义appender附件并发送消息认为它 - 这是我的尝试(没有成功,不幸)

我的初始化有什么问题(下面的Form1.cs)？

namespace WindowsFormsApplication1
{
    public partial class Form1 : Form
    {
         ILog log = LogManager.GetLogger(typeof(Form1));

        public Form1()
        {

            log4net.Config.XmlConfigurator.Configure();
            InitializeComponent();
        }



        private void button1_Click(object sender, EventArgs e)
        {
            log.Info("Creating log");
        }
    }

错误消息-Exception = {"无法加载文件或程序集'MessageBoxAppender'或其依赖项之一.系统找不到指定的文件.":"MessageBoxAppender"} [IMG] http://i57.tinypic.com/qrjcjc .PNG [/ IMG]

我尝试使用此自定义appender代码从下面的链接编写日志消息

http://www.alteridem.net/2008/01/10/writing-an-appender-for-log4net/

我的目标是单击一个按钮,日志消息将写入自定义appender.

我有3个文件/类.

1.Form1.cs windows窗体 - 只包含一个应该写一条消息并初始化的按钮.

2."MessageBoxAppender.cs" - 从"AppenderSkeleton"继承的自定义附加内容

3.app.config - 用于log4net配置

的app.config

<?xml version="1.0" encoding="utf-8" ?>
<configuration>
  <configSections>
    <section name="log4net"
    type="log4net.Config.Log4NetConfigurationSectionHandler, log4net" />
  </configSections>
  <log4net>
    <appender name="MessageBoxAppender"
        type="WindowsFormsApplication1.MessageBoxAppender, WindowsFormsApplication1">
      <layout type="log4net.Layout.PatternLayout">
        <ConversionPattern value="%m" />
      </layout>
    </appender>
    <root>
      <level value="ALL"/>
      <appender-ref ref="MessageBoxAppender" />
    </root>
  </log4net>
</configuration>

MessageBoxAppender自定义appender

    using log4net.Appender;
    using log4net.Core;
    using System;
    using System.Collections.Generic;
    using System.Diagnostics;
    using System.Linq;
    using System.Text;
    using System.Threading.Tasks;
    using System.Windows.Forms;

    namespace WindowsFormsApplication1
    {
        public class MessageBoxAppender : AppenderSkeleton
        {
            /// <summary>
            /// Writes the logging event to a MessageBox
            /// </summary>
            override protected void Append(LoggingEvent loggingEvent)
            {
                string title = string.Format("{0} {1}",
                    loggingEvent.Level.DisplayName,
                    loggingEvent.LoggerName);

                string message = string.Format(
                    "{0}{1}{1}{2}{1}{1}(Yes to continue, No to debug)",
                    RenderLoggingEvent(loggingEvent),
                    Environment.NewLine,
                    loggingEvent.LocationInformation.FullInfo);

                DialogResult result = MessageBox.Show(message, title,        MessageBoxButtons.YesNo);

                if (result == DialogResult.No)
                {
                    Debugger.Break();
                }
            }

            /// <summary>
            /// This appender requires a <see cref="Layout"/> to be set.
            /// </summary>
            override protected bool RequiresLayout
            {
                get { return true; }
            }
        }
    }

2. 我不确定app.config中的这一行是否正确 - 得到了解答

   <appender name="MessageBoxAppender"
   type="WindowsFormsApplication1.MessageBoxAppender, MessageBoxAppender">
   </appender>
   

约定是

 type="namespace + custom appender class name, custom appender class name>  

[编辑]我添加到我的代码:

var errors = LogManager.GetRepository().ConfigurationMessages.Cast<log4net.Util.LogLog>();

Answer 1

用于type属性的值是类的完全限定名称.这是appender(名称空间+类名)的类的完整路径,后跟它所在的程序集的名称.对于您的代码,这将是(假设您的程序集被调用WindowsFormsApplication1- 您可以在你的项目的属性):

<appender name="MessageBoxAppender"
    type="WindowsFormsApplication1.MessageBoxAppender, WindowsFormsApplication1">
</appender>