iot/labs/WebApp/Program.cs

using Microsoft.AspNetCore.Hosting;
using Microsoft.Extensions.Configuration;
using Microsoft.Extensions.Hosting;

namespace 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.UseConfiguration(new ConfigurationBuilder()
                        .AddJsonFile("appsettings.json", optional: true, reloadOnChange: true)
                        .Build())
                    .UseStartup<Startup>();
                });
    }
}