ASP.NET Core ILogger

I am just learning to use ASP.NET Core after not doing any development in C# for several years. The built-in dependency injection is really nice, but can lead to some confusion at times. I was trying to inject an ILogger into a constructor and had this error:

public RequestLogger(ILogger logger, ICurrentUserService currentUserService)
{
    _logger = logger;
    _currentUserService = currentUserService;
}

InvalidOperationException: Unable to resolve service for type 'Microsoft.Extensions.Logging.ILogger' while attempting to activate 'RequestLogger....

After trying to debug it for a while and getting nowhere, I ran across this on Stack Overflow from Hooman Bahreini:

What should be injected (at least according to the article above) is a non-generic ILogger, but then, that's not something that Microsoft's Built-in DI Container can do, and you need to use a 3rd party DI Library.

So I changed the code to this:

public RequestLogger(ILogger<RequestLogger> logger, ICurrentUserService currentUserService)
{
    _logger = logger;
    _currentUserService = currentUserService;
}

This solved the problem. Either always specify the type of the logger in the generic type parameter or use another injection framework than the built-in one.