Log4net set path

Question

Log4net set path

Dani_S 4,501

Hi,
I used log4net for worker service and Maui app and I want to keep the log file near the exe, how is can be done ?
Thanks in advance,

<?xml version="1.0" encoding="utf-8" ?>
<configuration>
<configSections>
<section name="log4net" type="log4net.Config.Log4NetConfigurationSectionHandler,log4net"/>
</configSections>

<log4net>

<appender name="console" type="log4net.Appender.ConsoleAppender">
    <layout type="log4net.Layout.PatternLayout">
        <conversionPattern value="%date %level %logger - %message%newline" />
    </layout>
</appender>
<appender name="file" type="log4net.Appender.RollingFileAppender">
    <lockingModel type="log4net.Appender.FileAppender+MinimalLock" />
    <file type="log4net.Util.PatternString" value="%property{LogFileName}.txt" />
    <file value="C:\Temp\service.log" />
    <appendToFile value="true" />
    <rollingStyle value="Size" />
    <maxSizeRollBackups value="5" />
    <maximumFileSize value="25MB" />
    <staticLogFileName value="true" />
    <layout type="log4net.Layout.PatternLayout">
        <conversionPattern value="%date [%thread] %level %logger - %message%newline" />
    </layout>
</appender>
    <root>
        <level value="INFO" />
        <!-- Please Look at Levels bellow, level OFF will log only OFF, level FATAL will log OFF and FATAL and so on...
ALL    DEBUG   INFO    WARN    ERROR   FATAL   OFF

•All
•DEBUG •DEBUG
•INFO •INFO •INFO
•WARN •WARN •WARN •WARN
•ERROR •ERROR •ERROR •ERROR •ERROR
•FATAL •FATAL •FATAL •FATAL •FATAL •FATAL
•OFF •OFF •OFF •OFF •OFF •OFF •OFF
-->

        <!--<appender-ref ref="console" />-->
        <appender-ref ref="file" />
    </root>

</log4net>
</configuration>

1 answer

Your answer

Answer 1

Bruce (SqlWork.com) 77,686 Volunteer Moderator

see the docs:

https://logging.apache.org/log4net/release/manual/configuration.html

in the <appender name="file" type="log4net.Appender.RollingFileAppender"> section,

there should only be one <file> entry. it defines the path to the file. you can use the config base path, environment variables, or global properties to set where it is located.

Dani_S 4,501 Reputation points

2022-05-12T06:34:31.133+00:00

I have one log 4net configuration for worker service and one for client MAUI.
I read the doc and didn't understand how I set the path where file is located, using the config base path, environment variables, or global properties to set where it is located.
Could you please give sniped code?
Dani_S 4,501 Reputation points

2022-05-12T07:32:29.423+00:00

For worker service I used <file value="service.log" /> and it run near exe.
But MSIX of MAUI where it run the log file when I used the same technic?
Bruce (SqlWork.com) 77,686 Reputation points Volunteer Moderator

2022-05-12T19:21:52.473+00:00

depends on the os.

for linux you should create a folder under /var/log. the installer should create the folder as it require su permission

on MacOs you create a folder under ~/Library/Logs. as apps are installed in the Application folder, they will not have write access to the folder.

on windows there s no standard as the event log is typically used. probably a folder under %APPDATA%
Dani_S 4,501 Reputation points

2022-05-15T07:51:06.767+00:00

I used MSIX for maul app , when I used <file value=".\MAUI.log" /> where I will see the fle, I want near the msix?
Anonymous

2022-05-25T08:09:21.817+00:00

If you want to know where to put Log4Net file in the MAUI app, I will suggest you put it in app data folder if you want a file system based solution, because log file cannot be in the MSIX file, since this log file will be read-only after installing MSIX file.
If you want to plug into platform specific event logging instead, please check this feature request: https://issues.apache.org/jira/browse/LOG4NET-549

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Log4net set path

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