.dot net core background console service demo

AppHostedService.cs

using Microsoft.Extensions.Hosting;

namespace App.HostService
{
    public class AppHostService : BackgroundService
    {
        IHostApplicationLifetime _lifetime;
        public AppHostService(IHostApplicationLifetime lifetime)
        {
            _lifetime = lifetime;
        }

        protected override async Task<object> ExecuteAsync(CancellationToken stoppingToken)
        {
            int loop = 0;
            while (!stoppingToken.IsCancellationRequested) {
                try {
                    Console.WriteLine("Background service working...");
                    await Task.Delay(5000, stoppingToken);
                    if (loop++ > 10) {
                        _lifetime.StopApplication();
                    }
                } catch(TaskCanceledException exception)
                {
                    Console.WriteLine($"TaskCanceledException Error: {exception.Message}");
                }
            }
            return Task.CompletedTask;
        }

        public override Task StartAsync(CancellationToken cancellationToken)
        {
            Console.WriteLine("Start Async AppHostService");
            return base.StartAsync(cancellationToken);
        }

        public override Task StopAsync(CancellationToken cancellationToken)
        {
            Console.WriteLine("Stop Async AppHostService.");
            return base.StopAsync(cancellationToken);
        }
    }
}

Program.cs

using App.HostService;
using Microsoft.Extensions.DependencyInjection;
using Microsoft.Extensions.Hosting;

// See https://aka.ms/new-console-template for more information
Console.WriteLine("Hello, World!");


await Host.CreateDefaultBuilder()
    .UseConsoleLifetime()
    .ConfigureServices((context, services) => {
        services.AddHostedService<AppHostService>();
    })
    .RunConsoleAsync();