在winform项目里集成log4net日志控件

1、引用log4net.dll文件   备注：通过直接引用dll或使用nugit都可以

2、添加一个log4net.config文件，内容如下：

<?xml version="1.0" encoding="utf-8" ?>
<configuration>
  <configSections>
    <section name="log4net" type="log4net.Config.Log4NetConfigurationSectionHandler,log4net" />
  </configSections>
  <log4net>
    <root>
    </root>
    <logger name="Error">
      <level value="ALL" />
      <appender-ref ref="ErrorAppender" />
    </logger>
    <logger name="InfoLog">
      <level value="ALL" />
      <appender-ref ref="InfoAppender" />
    </logger>
    <appender name="ErrorAppender" type="log4net.Appender.RollingFileAppender,log4net" >
      <param name="File" type="" value="Log/Error/" />
      <param name="AppendToFile" value="true" />
      <param name="RollingStyle" value="Date" />
      <param name="DatePattern" value="yyyyMMdd" />
      <param name="StaticLogFileName" value="false" />
      <layout type="log4net.Layout.PatternLayout,log4net">
        <param name="ConversionPattern" value="%n[%d] %c %n%m%n%n" />
        <param name="Header" value="-----------BEGIN-----------" />
        <param name="Footer" value="------------END------------" />
      </layout>
    </appender>
    <appender name="InfoAppender" type="log4net.Appender.RollingFileAppender,log4net" >
      <param name="File" type="" value="Log/Info/" />
      <param name="AppendToFile" value="true" />
      <param name="RollingStyle" value="Date" />
      <param name="DatePattern" value="yyyyMMdd" />
      <param name="StaticLogFileName" value="false" />
      <layout type="log4net.Layout.PatternLayout,log4net">
        <param name="ConversionPattern" value="%n[%d] %c %n%m%n%n" />
        <param name="Header" value="-----------BEGIN-----------" />
        <param name="Footer" value="------------END------------" />
      </layout>
    </appender>
  </log4net>
</configuration>

注意：在这个config文件上点右键属性，让它始终复制或较新复制

3、在Properties下的AssemblyInfo.cs文件时加一行：

[assembly: log4net.Config.XmlConfigurator(ConfigFile = "log4net.config", Watch = true)]

4、加一个Help类内容如下：

public class log4netHelper
    {
        /// <summary>
        /// 普通日志
        /// </summary>
        /// <param name="message">日志内容</param>
        public static void Info(string message)
        {
            log4net.ILog log = log4net.LogManager.GetLogger("InfoLog");
            if (log.IsInfoEnabled)
            {
                log.Info(message);
            }
            log = null;
        }
        /// <summary>
        /// 错误日志
        /// </summary>
        /// <param name="message">错误日志</param>
        public static void Error(string message)
        {
            log4net.ILog log = log4net.LogManager.GetLogger("Error");
            if (log.IsInfoEnabled)
            {
                log.Error(message);
            }
            log = null;
        }
    }

5、使用示例如下：

log4netHelper.Info("这是一条普通日志");
log4netHelper.Error("这是一条错误日志");