c# - Log4Net, Cannot use multiple RollingFileAppenders at a time -
    i have strange problem. i'm trying create multiple rolling file appenders referencing same file, using 1 of theese appenders @ time.   the matter is, if declare appender this:   <appender name="app1" type="log4net.appender.rollingfileappender">   <file value="c:\log.txt" />   <layout type="log4net.layout.patternlayout,log4net">     <conversionpattern value="%date [%thread] %-5level %logger [%ndc] - message%newline" />   </layout>  </appender> <logger name="app1" additivity="false">   <level value="debug" />   <appender-ref ref="app1" /> </logger> <appender name="app2" type="log4net.appender.rollingfileappender">   <file value="c:\log.txt" />   <layout type="log4net.layout.patternlayout,log4net">     <conversionpattern value="%date [%thread] %-5level %logger [%ndc] -...