using System;

using System.Threading.Tasks;

using Microsoft.Extensions.Hosting;

using Microsoft.Extensions.DependencyInjection;

public class Program

{

    private static IRefreshAshleyItemStatusesETL refreshAshleyItemStatusesETL;

    static async Task Main(string[] args)

    {

        var host = Host.CreateDefaultBuilder()

            .ConfigureServices((hostContext, services) =>

            {               

                services.AddTransient<IRefreshAshleyItemStatusesETL, RefreshAshleyItemStatusesETL>();                

            })

            .UseConsoleLifetime()

            .Build();

        refreshAshleyItemStatusesETL = host.Services.GetRequiredService<IRefreshAshleyItemStatusesETL>();

        await refreshAshleyItemStatusesETL.RefreshAshleyItemStatuses();

        Console.WriteLine("Hello World");

    }

}

​

public interface IRefreshAshleyItemStatusesETL

{

    Task RefreshAshleyItemStatuses();

}

​

public class RefreshAshleyItemStatusesETL : IRefreshAshleyItemStatusesETL

{

     public async Task RefreshAshleyItemStatuses()

        {

            await Task.Run(() => Console.WriteLine("calling RefreshAshleyItemStatusesETL"));

        }

}