Startup.cs

using System;
using Microsoft.AspNetCore.Builder;
using Microsoft.AspNetCore.Hosting;
using Microsoft.AspNetCore.Http;
using Microsoft.Extensions.DependencyInjection;

namespace ConsoleApplication
{
  public class Startup
  {
    public void Configure(IApplicationBuilder app)
    {
      app.Run(context => context.Response.WriteAsync(“Hello World, from ASP.NET!”));
    }
  }
}