Can't log events into application insights

Question

I'm trying to log some messages like error messages into app-insights using ILogger.

I have already implemented ILogger and it works fine for logging into Console, but it does not log anything into app-insights. The Docs seems to be not up to date, since there is no method called AddApplicationInsights in ILoggingBuilder interface.

Therefore I've used the method AddAzureWebAppDiagnostics instead.

 public class Program
    {
        public static void Main(string[] args)
        {
            BuildWebHost(args).Run();
        }

        public static IWebHost BuildWebHost(string[] args) =>
            WebHost.CreateDefaultBuilder(args)
                .ConfigureLogging((hostingContext, logging) =>
                {
                    // Add Azure Logging
                    logging.AddAzureWebAppDiagnostics();
                    logging.AddConsole();
                })
                .UseApplicationInsights()
                .UseStartup<Startup>()
                .Build();

public class Startup
{
        private readonly ILoggerFactory _loggerFactory;

        public Startup(IConfiguration config, ILoggerFactory loggerFactory)
        {
            Configuration = config;
            _loggerFactory = loggerFactory;
        }

        public void ConfigureServices(IServiceCollection services)
        {
              ILogger logger = _loggerFactory.CreateLogger<BasicBot>();

              logger.LogInformation("THAT IS A TEST MESSAGE");
        }
}

It logs fine into the Console BUT I see nothing in app-insights!

Hint: I'm using dotnet core 2.1 and debug in Development from visual studio.

Hint: app-insights works fine and logs the requests using ITelemetry. But I need ILogger too, to log different messages from many locations in the code!

Answer 1

The method AddApplicationInsights is included in this package Microsoft.Extensions.Logging.ApplicationInsights.

I setup a .net core 2.1 web app, and configure application insight as well as installing this package Microsoft.Extensions.Logging.ApplicationInsights , version 2.9.1. The logs can be shown both in console and portal.

In code:

Test result - logs in azure portal: