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Log4Net - How to write logs to multiple files/Console using C# application

Hello Experts,

I have different applications which use the same app.config to write logs to a file or a console window. My app.config file is as follows

<log4net>
  <appender name="RollingFileAppender" type="log4net.Appender.RollingFileAppender">
    <File value="C:\File1.log" />
    <AppendToFile value="true" />
    <rollongStyle  value="Composite" />
    <maximumFileSize value="200MB" />
    <layout type="log4net.Layout.PatternLayout">
      <ConversionPattern value="%date %messge%newline"/>
    </layout>
  </appender>

  <appender name="LogFileAppender" type="log4net.Appender.RollingFileAppender">
    <File value="C:\File2.log" />
    <AppendToFile value="true" />
    <rollongStyle  value="Date" />
    <maximumFileSize value="100MB" />
    <layout type="log4net.Layout.PatternLayout">
      <ConversionPattern value="%date %messge%newline"/>
    </layout>

    <filter type="log4net.Filter.LevelRangeFilter">
      <acceptOnMatch value="true" />
      <levelMin value="INFO" />
    </filter>
    <filter type="log4net.Filter.LevelRangeFilter">
      <acceptOnMatch value="true" />
      <levelMin value="FATAL" />
    </filter>
  </appender>

  <appender name="ColoredConsoleAppender" type="log4net.Appender.ColoredConsoleAppender">
    <mapping>
      <level value ="ERROR"/>
      <foreColor value ="Red"/>
    </mapping>

    <mapping>
      <level value ="WARN"/>
      <foreColor value ="Yellow"/>
    </mapping>
    <layout type="log4net.Layout.PatternLayout">
      <ConversionPattern value="%date %messge%newline"/>
    </layout>
  </appender>

  <root>
    <level value="ALL" />
    <appender-ref ref="LogFileAppender" />
    <appender-ref ref="RollingFile" />
    <appender-ref ref="ColoredConsoleAppender" />
  </root>
</log4net>

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In My c# project, I am trying to use "LogFileAppender" to write the logs to a file. But the issue is, it also sending the logs to the Console Window.

Question:
How can I stop sending the logs to the console when I use LogFileAppender using the above app.config file

Thanks for your help

Michael Fowler

How are you declaring the logger in code. Something like this uses the default logger settings

log4net.Config.BasicConfigurator.Configure();
ILog log = log4net.LogManager.GetLogger(typeof(Program));

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try

private static readonly log4net.ILog log = log4net.LogManager.GetLogger
   (System.Reflection.MethodBase.GetCurrentMethod().DeclaringType);

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HPFE455

ASKER

Thanks Michael74,

My logger setting was as follows,

log4net.Config.XmlConfigurator.Configure();
ILog log = log4net.LogManager.GetLogger("");

I tried you solution but it didn't work.

it_saige

You will probably need to do something like this:

<!-- Add the following to your config file and remove\comment out the root section -->
<logger name = "FileLogger">
  <level value="ALL" />
  <appender-ref ref="LogFileAppender" />
</logger>

<logger name = "ConsoleLogger">
  <level value="ALL" />
  <appender-ref ref="ColoredConsoleAppender" />
</logger>

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Then you would instantiate each logger as such:

private static readonly ILog fileLogger = LogManager.GetLogger("FileLogger");
private static readonly ILog consoleLogger = LogManager.GetLogger("ConsoleLogger");

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-saige-

HPFE455

ASKER

I found the solution by modifying the app.config as follows.

	<logger name = "FileLogger" additivity="false">
		<level value="ALL" />
		<appender-ref ref="LogFileAppender" />
	</logger>

	<root>
		<level value="ALL" />
		<appender-ref ref="RollingFile" />
		<appender-ref ref="ColoredConsoleAppender" />
	</root>

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ASKER CERTIFIED SOLUTION

it_saige

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it_saige

Ack. You beat me to it. ;)

-saige-

HPFE455

ASKER

Saige,

I would like to accept your detailed solution. But I couldn't find any option to change the accepted solution.

Thanks

it_saige

You can always request to reopen the question so that you can reassign the points or change the accepted solution.

At the top of the question you will see something like:

You would choose the 'Request Attention' link in order to have the question reopened. Just be sure to provide the reason for the requested attention.

Here is the link reposted: Request Attention

-saige-