W3CLogger documentation leads to an error and does not explain where the logs can be found

[bakku]

Description

When following the current version of the W3CLogger docs, it appears that one can enable W3C logging with just the following line:

app.UseW3CLogging();

However, this causes the following error during startup:

crit: Microsoft.AspNetCore.Hosting.Diagnostics[6]
      Application startup exception
      System.InvalidOperationException: Unable to resolve service for type 'Microsoft.AspNetCore.HttpLogging.W3CLogger' while attempting to activate 'Microsoft.AspNetCore.HttpLogging.W3CLoggingMiddleware'.
         at Microsoft.Extensions.Internal.ActivatorUtilities.ConstructorMatcher.CreateInstance(IServiceProvider provider)
         at Microsoft.Extensions.Internal.ActivatorUtilities.CreateInstance(IServiceProvider provider, Type instanceType, Object[] parameters)
         at Microsoft.AspNetCore.Builder.UseMiddlewareExtensions.ReflectionMiddlewareBinder.CreateMiddleware(RequestDelegate next)
         at Microsoft.AspNetCore.Builder.ApplicationBuilder.Build()
         at Microsoft.AspNetCore.Builder.ApplicationBuilder.Build()
         at Microsoft.AspNetCore.Hosting.GenericWebHostService.StartAsync(CancellationToken cancellationToken)

It is not clearly stated that builder.Services.AddW3CLogging(...) is actually necessary like in the HTTP Logging docs. Additionally, the documentation does not specify where users can find the logs when using the default configuration.

Page URL

https://learn.microsoft.com/en-us/aspnet/core/fundamentals/w3c-logger/?view=aspnetcore-8.0

Content source URL

https://github.com/dotnet/AspNetCore.Docs/blob/main/aspnetcore/fundamentals/w3c-logger/index.md

Document ID

13e1469d-48c9-5212-27bb-2869dcbbe2a8

Article author

@wtgodbe