.NET 8 Console App DI Error 'Unable to resolve service for type 'Microsoft.Extensions.Logging.ILoggerFactory'

Question

I'm trying to add dependency injection to a .NET 8 Console Application following the explanation in this video How to use Dependency Injection (DI) in C# Console Application with Logging but I get the following error:

"Unable to resolve service for type 'Microsoft.Extensions.Logging.ILoggerFactory' while attempting to activate 'Microsoft.Extensions.Localization.ResourceManagerStringLocalizerFactory'."

This is the code of the Program.cs

ServiceCollection services = new();

services.AddLocalization(options => options.ResourcesPath = "Localization");

services.AddSingleton<ILocalizationService, LocalizationService>();
services.AddScoped<IEntityService, EntityService>();

var provider = services.BuildServiceProvider();

EntityService service = new(provider.GetService<ILocalizationService>());

This is the code of the LocalizationService class

public class LocalizationService : ILocalizationService
{
public class SharedResource { }

private readonly IStringLocalizer _localizer;
public LocalizationService(IStringLocalizerFactory factory)
{
    var type = typeof(SharedResource);
    var assemblyName = new AssemblyName(type.GetTypeInfo().Assembly.FullName!);
    _localizer = factory.Create("Resource", assemblyName.Name!);
}
public LocalizedString GetKey(string key)
{
    return _localizer[key];
}
}

This is the Entity Service class

public class EntityService(ILocalizationService localization) : IEntityService
{
   ...
}

The error occurs at this line of the Program.cs

EntityService service = new(provider.GetService<ILocalizationService>());

I tried a lot of solutions found on stack overflow but nothing helped and don't need the logging.

How to fix this error?

Answer 1

ResourceManagerStringLocalizerFactory depends on Microsoft.Extensions.Logging.ILoggerFactory which is required for service to be resolved via DI.

You are missing LoggingServiceCollectionExtensions.AddLogging call. For example add Microsoft.Extensions.Logging.Console nuget:

services.AddLogging(lb => lb.AddConsole());

If you don't want actual logging then Microsoft.Extensions.Logging is sufficient with the following registration:

services.AddLogging();