EventId Not Showing in Logs

[MDornian]

Even when eventId is provided, the pattern %property{eventId} will always produce (null) in the logs.

To reproduce this problem, I modified the following file: samples\Net8.0\WebApi\Controllers\WeatherForecastController.

        // Added the following 2 lines
        EventId eventId = 1001;
        _logger.LogWarning(eventId, "Sample with EventId");
        
        _logger.LogCritical(new Exception("ExceptionText"), "This is {weather}", weatherForecasts.First().Summary);
        _logger.LogTrace("Weather forecast ready!");

This produced the following log entry

2024-03-05 11:11:28,910  WARN Sample.WebApi.Net80.Controllers.WeatherForecastController.Get [(null)] [32] - MESSAGE: Sample with EventId

I would have expected

2024-03-05 11:11:28,910  WARN Sample.WebApi.Net80.Controllers.WeatherForecastController.Get [1001] [32] - MESSAGE: Sample with EventId

Just a reminder that the log4net.config has the following conversion pattern

<layout type="log4net.Layout.PatternLayout">
		<conversionPattern value="%date %5level %logger.%method [%property{eventId}] [%line] - MESSAGE: %message%newline %exception" />
</layout>