Logging in two different files on demand about microsoft.extensions.logging.log4net.aspnetcore HOT 3 CLOSED

Hello @sylendra7,

This scenario can be fulfilled using the configuration options from log4net, and using different loggers for each desired log file.

Please review the official documentation on https://logging.apache.org/log4net/release/manual/configuration.html .

I have not tested it, but should be something similar to...

//...
var logger1 = log4netProvider.CreateLogger("File1");
var logger2 = log4netProvider.CreateLogger("File2");

logger1.LogInformation("This message will be shown on File1");
logger2.LogInformation("This message will be shown on File2");

And the log4net.config file...

<log4net>
    <appender name="RollingFile1" type="log4net.Appender.RollingFileAppender">
        <file value="File1.log" />
        <appendToFile value="true" />
        <maximumFileSize value="100KB" />
        <maxSizeRollBackups value="2" />
 
        <layout type="log4net.Layout.PatternLayout">
            <conversionPattern value="%level %thread %logger - %message%newline" />
        </layout>
    </appender>
    <appender name="RollingFile2" type="log4net.Appender.RollingFileAppender">
        <file value="File2.log" />
        <appendToFile value="true" />
        <maximumFileSize value="100KB" />
        <maxSizeRollBackups value="2" />
 
        <layout type="log4net.Layout.PatternLayout">
            <conversionPattern value="%level %thread %logger - %message%newline" />
        </layout>
    </appender>
    
    <root>
        <level value="DEBUG" />
    </root>
    <logger name="File1">
        <appender-ref ref="RollingFile1" />
    </logger>
    <logger name="File2">
        <appender-ref ref="RollingFile2" />
    </logger>
</log4net>

Let me know your thought on this after you can review the documentation. Thank you.

from microsoft.extensions.logging.log4net.aspnetcore.

Okay Thanks @huorswords . Can you please tell me how to log only my logs ,because it is logging extra logs like

Executing RedirectResult, redirecting to /Home/Index.
Request successfully matched the route with name 'default' and template '{controller=Login}/ etc

from microsoft.extensions.logging.log4net.aspnetcore.

You can avoid to include the built-in messages from ASP.NET Core removing it from the logging system itself as follows:

public static IWebHostBuilder CreateWebHostBuilder(string[] args) =>
	WebHost.CreateDefaultBuilder(args)
		.ConfigureLogging((hostingContext, logging) =>
		{
			logging.AddFilter("Microsoft", LogLevel.None);
		})
		.UseStartup<Startup>();

This snippet, located on Program.cs file, indicates to the logging system that all the Microsoft events should be ignored.

If this radical approach doesn't match your requirements, then you can use directly the filters available on the log4net library (https://logging.apache.org/log4net/release/manual/configuration.html#Filters) in order to configure the appenders to only process the events that you want to process. This last option is more natural to me.

from microsoft.extensions.logging.log4net.aspnetcore.