visual studio - No appenders instantiated when running locally -


i have web application uses log4net. web application deployed azure, , works there perfectly. when run locally through vs2013 (update 4), log4net doesn't instantiate adonetappender.

i checked exception breaking on thrown exceptions, nothing thrown, activated internal log4net debugging , nothing exceptional showed in debug output.

i added <trust level="full"/> web.config, nothing...

i'm stumped, again, works on azure, not locally. ideas? thanks!

edit here's web.config (relevant lines only)

<configuration>   <configsections>     <section name="log4net" type="log4net.config.log4netconfigurationsectionhandler, log4net" />   </configsections>   <connectionstrings>     <add name="defaultconnection" connectionstring="data source=.\sqlexpress;initial catalog=**********;integrated security=sspi" providername="system.data.sqlclient" />   </connectionstrings>   <log4net debug="true">     <appender name="adonetappender" type="log4net.appender.adonetappender">       <buffersize value="1" />       <connectionstringname value="defaultconnection" />       <commandtext value="insert log ([storeid],[date],[thread],[level],[logger],[message],[exception],[user]) values (@store, @log_date, @thread, @log_level, @logger, @message, @exception, @user)" />       <parameter>...</parameter>       ...     </appender>     <appender name="debugappender" type="log4net.appender.debugappender">       <immediateflush value="true" />       <layout type="log4net.layout.simplelayout" />     </appender>     <root>       <level value="debug" />       <appender-ref ref="adonetappender" />       <appender-ref ref="debugappender" />     </root>   </log4net>   <appsettings>     <add key="log4net.internal.debug" value="true" />     <add key="log4net.config" value="log4net.simple.config"/>     <add key="log4net.config.watch" value="true"/>   </appsettings>   <system.web>     <authentication mode="none" />     <compilation debug="true" targetframework="4.5.1" />     <httpruntime targetframework="4.5.1" maxrequestlength="1048576" />     <customerrors mode="off" />     <trust level="full"/>   </system.web> </configuration>

update 2

i discovered although log4net configured properly, calling logmanager.getlogger("...") returns logger no appenders. if inspect hierarchy further can see adonetappender in there, , when xmlconfigurator.configure() runs outputs following log4net: adding appender named [adonetappender] logger [root]....

so problem boils down (and happens locally only, not on production) object returned logmanager.getlogger(...) doesn't contain appenders.

solved

see accepted answer below. turns out missing call xmlconfigurator.configure() in application_start method. other 'evidence' provided normal behavior, , reason wasn't seeing log messages locally slight unintentional difference between log table schema between local db , production one.

you can configure log4net in global.asax:

public class webapiapplication : httpapplication {     protected void application_start()     {         xmlconfigurator.configure();

this works azure , local.


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