log4net in MAUI application

[TheSundayDev]

Hi all,
I'm migrating from xamarin form to MAUI (ios and android) and one library has log4net as dependency.
I have the exception below.
How can I solve it?
thanks a lot

[DOTNET] log4net:ERROR Exception while reading ConfigurationSettings. Check your .config file is well formed XML.
[0:] log4net:ERROR Exception while reading ConfigurationSettings. Check your .config file is well formed XML.
[DOTNET] System.Configuration.ConfigurationErrorsException: Configuration system failed to initialize
[DOTNET] ---> System.PlatformNotSupportedException: Operation is not supported on this platform.
[DOTNET] at System.Configuration.ClientConfigPaths..ctor(String exePath, Boolean includeUserConfig)
[DOTNET] at System.Configuration.ClientConfigPaths.GetPaths(String exePath, Boolean includeUserConfig)
[DOTNET] at System.Configuration.ClientConfigurationHost.get_ConfigPaths()
[DOTNET] at System.Configuration.ClientConfigurationHost.GetStreamName(String configPath)
[DOTNET] at System.Configuration.ClientConfigurationHost.get_IsAppConfigHttp()
[DOTNET] at System.Configuration.Internal.DelegatingConfigHost.get_IsAppConfigHttp()
[DOTNET] at System.Configuration.ClientConfigurationSystem..ctor()
[DOTNET] at System.Configuration.ConfigurationManager.EnsureConfigurationSystem()
[DOTNET] --- End of inner exception stack trace ---
[DOTNET] at System.Configuration.ConfigurationManager.PrepareConfigSystem()
[DOTNET] at System.Configuration.ConfigurationManager.GetSection(String sectionName)
[DOTNET] at System.Configuration.ConfigurationManager.get_AppSettings()
[DOTNET] at log4net.Util.SystemInfo.GetAppSetting(String key)
[0:] System.Configuration.ConfigurationErrorsException: Configuration system failed to initialize
---> System.PlatformNotSupportedException: Operation is not supported on this platform.
at System.Configuration.ClientConfigPaths..ctor(String exePath, Boolean includeUserConfig)
at System.Configuration.ClientConfigPaths.GetPaths(String exePath, Boolean includeUserConfig)
at System.Configuration.ClientConfigurationHost.get_ConfigPaths()
at System.Configuration.ClientConfigurationHost.GetStreamName(String configPath)
at System.Configuration.ClientConfigurationHost.get_IsAppConfigHttp()
at System.Configuration.Internal.DelegatingConfigHost.get_IsAppConfigHttp()
at System.Configuration.ClientConfigurationSystem..ctor()
at System.Configuration.ConfigurationManager.EnsureConfigurationSystem()
--- End of inner exception stack trace ---
at System.Configuration.ConfigurationManager.PrepareConfigSystem()
at System.Configuration.ConfigurationManager.GetSection(String sectionName)
at System.Configuration.ConfigurationManager.get_AppSettings()
at log4net.Util.SystemInfo.GetAppSetting(String key)

[FreeAndNil]

@TheSundayDev do you have a config file?
If yes, can you post the content?
If not, can you create one?
Do you have a reference on System.Configuration?

[TheSundayDev]

Thanks for your quick reply!
Reference to System.Configuration.ConfigurationManager added.
I created a app.config file in project root and mark as Embedded resource.
For sure I'm doing something wrong.
Content is

<?xml version="1.0" encoding="utf-8" ?>
<configSections>
  <section name="log4net" type="log4net.Config.Log4NetConfigurationSectionHandler, log4net" />
</configSections>
<log4net>
  <appender name="ConsoleAppender" type="log4net.Appender.ConsoleAppender" >
    <layout type="log4net.Layout.PatternLayout">
      <conversionPattern value="%date| %level | %message%newline" />
    </layout>
  </appender>
  <root>
    <level value="INFO" />
    <appender-ref ref="ConsoleAppender" />
  </root>
</log4net>

thanks

[FreeAndNil]

@TheSundayDev embedded ressource is wrong. The config file must be copied as is to the target directory (the default build action for config files)
Is the exception still the same?
Can you post your project file?

[FreeAndNil]

@TheSundayDev is this issue still relevant?
Otherwise I will close this next week.

[FreeAndNil]

@TheSundayDev feel free to reopen when you have more details.

[FreeAndNil]

@TheSundayDev your config file is not well formed (it has more than one root element).

It needs to look like this:

  <log4net>
    <appender name="ConsoleAppender" type="log4net.Appender.ConsoleAppender" >
      <layout type="log4net.Layout.PatternLayout">
        <conversionPattern value="%date| %level | %message%newline" />
      </layout>
    </appender>
    <root>
      <level value="INFO" />
      <appender-ref ref="ConsoleAppender" />
    </root>
  </log4net>

Please see #239.
You can't use config files on android. Better use a separate XML file and provide a linkt to it to XmlConfigurator.Configure(FileInfo).