Where will log4net create this log file?

Question

When I set the file value to logs\log-file.txt, where exactly will it create this folder? In the /bin directory?

My web.config looks like this:

<log4net>     <appender name="FileAppender" type="log4net.Appender.FileAppender">       <file value="logs\log-file.txt" />       <appendToFile value="true" />       <lockingModel type="log4net.Appender.FileAppender+MinimalLock" />       <layout type="log4net.Layout.PatternLayout">         <conversionPattern value="%date [%thread] %-5level %logger [%property{NDC}] - %message%newline" />       </layout>     </appender> </log4net> 

Is this the correct way to log:

ILog logger = LogManager.GetLogger(typeof(CCController)); logger.Error("Some Page", ex);  // where ex is the exception instance 

Answer 1

If you want your log file to be place at a specified location which will be decided at run time may be your project output directory then you can configure your .config file entry in that way

<file type="log4net.Util.PatternString" value="%property{LogFileName}.txt" /> 

and then in the code before calling log4net configure, set the new path like below

 log4net.GlobalContext.Properties["LogFileName"] = @"E:\\file1"; //log file path  log4net.Config.XmlConfigurator.Configure(); 

How simple is it? :)

Answer 2

it will create the file in the root directory of your project/solution.

You can specify a location of choice in the web.config of your app as follows:

   <appender name="RollingLogFileAppender" type="log4net.Appender.RollingFileAppender">       <file value="c:/ServiceLogs/Olympus.Core.log" />       <appendToFile value="true" />       <rollingStyle value="Date" />       <datePattern value=".yyyyMMdd.log" />       <maximumFileSize value="5MB" />       <staticLogFileName value="true" />       <lockingModel type="log4net.Appender.RollingFileAppender+MinimalLock" />       <maxSizeRollBackups value="-1" />       <countDirection value="1" />       <layout type="log4net.Layout.PatternLayout">         <conversionPattern value="%date %-5level [%thread] %logger - %message%newline%exception" />       </layout>     </appender> 

the file tag specifies the location.