Startup.cs in a self-hosted .NET Core Console Application

Question

I have a self-hosted .NET Core Console Application.

The web shows examples for ASP.NET Core but i do not have a webserver. Just a simple c

Answer 1

So i came across with this solution, inspired by the accepted answer:

Program.cs

public class Program
{
    public static void Main(string[] args)
    {
        IServiceCollection services = new ServiceCollection();
        // Startup.cs finally :)
        Startup startup = new Startup();
        startup.ConfigureServices(services);
        IServiceProvider serviceProvider = services.BuildServiceProvider();

        //configure console logging
        serviceProvider
            .GetService()
            .AddConsole(LogLevel.Debug);

        var logger = serviceProvider.GetService()
            .CreateLogger();

        logger.LogDebug("Logger is working!");

        // Get Service and call method
        var service = serviceProvider.GetService();
        service.MyServiceMethod();
    }
}

Startup.cs

public class Startup
{
    IConfigurationRoot Configuration { get; }

    public Startup()
    {
        var builder = new ConfigurationBuilder()
            .AddJsonFile("appsettings.json");

        Configuration = builder.Build();
    }

    public void ConfigureServices(IServiceCollection services)
    {
        services.AddLogging();
        services.AddSingleton(Configuration);
        services.AddSingleton();
    }
}

appsettings.json

{
    "SomeConfigItem": {
        "Token": "8201342s223u2uj328",
        "BaseUrl": "http://localhost:5000"
    }
}

MyService.cs

public class MyService : IMyService
{
    private readonly string _baseUrl;
    private readonly string _token;
    private readonly ILogger _logger;

    public MyService(ILoggerFactory loggerFactory, IConfigurationRoot config)
    {
        var baseUrl = config["SomeConfigItem:BaseUrl"];
        var token = config["SomeConfigItem:Token"];

        _baseUrl = baseUrl;
        _token = token;
        _logger = loggerFactory.CreateLogger();
    }

    public async Task MyServiceMethod()
    {
        _logger.LogDebug(_baseUrl);
        _logger.LogDebug(_token);
    }
}

IMyService.cs

public interface IMyService
{
    Task MyServiceMethod();
}