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https://issues.apache.org/jira/browse/LOG4NET-272?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15640571#comment-15640571
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Joe commented on LOG4NET-272:
-----------------------------
If you are using properties in the configuration file, you need to set *all*
such properties in code before log4net is configured.
The code you posted only sets one of the properties (applog) and doesn't set
the other (dblog).
You may find the new appsettings feature useful: see LOG4NET-526
> Problems in dynamic file naming with multiple appenders
> -------------------------------------------------------
>
> Key: LOG4NET-272
> URL: https://issues.apache.org/jira/browse/LOG4NET-272
> Project: Log4net
> Issue Type: Task
> Components: Appenders
> Affects Versions: 1.2.10
> Environment: OS: Windows XP
> Programming Environment: VB.NET
> .NET Framework 3.5
> Appender Type: RollingFileAppender
> Reporter: Ranjith Nair
> Assignee: Dominik Psenner
> Priority: Minor
> Fix For: 1.2 Maintenance Release
>
> Original Estimate: 48h
> Remaining Estimate: 48h
>
> I have 3 appenders in my config file for creating 3 different types of logs.
> I am using dynamic naming of file in each of the 3 appenders by setting the
> global context properties. In some cases, i need to set the log file name
> dynamically for just 1 appender. When i set the file name for just 1
> appender, it creates another file named "null" with no data in addition to
> the actual logfile whose name has been set dynamically.
> <appender name="RollingFileAppenderV1"
> type="log4net.Appender.RollingFileAppender">
> <file type="log4net.Util.PatternString" value="Logs\%property{applog}" />
> .
> .
> .
> <appender name="RollingFileAppenderV2"
> type="log4net.Appender.RollingFileAppender">
> <file type="log4net.Util.PatternString" value="Logs\%property{dblog}" />
> .
> .
> <logger name="Logger1">
> <level value="DEBUG" />
> <appender-ref ref="RollingFileAppenderV1" />
> </logger>
> <logger name="Logger2">
> <level value="DEBUG" />
> <appender-ref ref="RollingFileAppenderV2" />
> </logger>
> In the VB.NET code i set the filename as :
> log4net.GlobalContext.Properties("applog") = "file1.log"
> Dim logobj as log4net.Ilog = LogManager.GetLogger("Logger1")
> logobj.debug("test")
> In this case it creates "file1.log" and also another empty file with name as
> "null". This happens only when i am setting either of the appenders filename
> at runtime.
> Could you please check and let me know the issue behind this.
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