Program.cs

using System;
using System.Collections.Generic;
using System.Linq;
using System.Threading.Tasks;
using Microsoft.AspNetCore.Hosting;
using Microsoft.Extensions.Configuration;
using Microsoft.Extensions.Hosting;
using Microsoft.Extensions.Logging;

namespace WebFileServ.WebApp
{
    public class Program
    {
        public static void Main(string[] args)
        {
            CreateHostBuilder(args)
                .Build()
                .Run();
        }

        public static IHostBuilder CreateHostBuilder(string[] args) =>
            Host
                .CreateDefaultBuilder(args)
                .ConfigureWebHostDefaults(
                    webBuilder =>
                    {
                        webBuilder.UseStartup<Startup>();
                    }
                    );
    }
}