c# - log4net doesn't write to the file -

i have windows forms application , trying use log4net logging file.
in app.config have:

<log4net debug="false">     <appender name="logfileappender" type="log4net.appender.fileappender,log4net" >       <param name="file" value="c:\...\logfile.txt" />       <param name="appendtofile" value="true" />       <layout type="log4net.layout.patternlayout,log4net">         <param name="conversionpattern" value="%n%n%n%d [%t] %-5p %c  - %m%n%n" />       </layout>     </appender>     <root>       <priority value="all" />       <appender-ref ref="logfileappender" />     </root>     <category name="desktoplogger.form1">       <priority value="all" />     </category> </log4net> 

and in code behind main form have:

public log4net.ilog    logger  { get; set; } 

as property , in form initialization have:

log4net.config.xmlconfigurator.configure();  this.logger= logmanager.getlogger(typeof(program)); 

after that, on click button event have:

this.logger.info("text logger"); 

and when open file after - nothing written it. it's empty file.

you're missing layout:

<layout type ...>     <conversionpattern value="%date [%thread] %-5level %logger [%property{ndc}] - %message%newline" /> </layout> 

you can of course make layout wish, that's example.