using Microsoft.Extensions.Hosting;
using System;
using System.ServiceProcess;
using System.Threading;
using System.Threading.Tasks;

namespace ConsoleApp4
{

    public class ServiceBaseLifetime : ServiceBase, IHostLifetime
    {
        private readonly TaskCompletionSource<object> _delayStart = new TaskCompletionSource<object>();

        public ServiceBaseLifetime(IApplicationLifetime applicationLifetime)
        {
            ApplicationLifetime = applicationLifetime ?? throw new ArgumentNullException(nameof(applicationLifetime));
        }

        private IApplicationLifetime ApplicationLifetime { get; }

        public Task WaitForStartAsync(CancellationToken cancellationToken)
        {
            cancellationToken.Register(() => _delayStart.TrySetCanceled());
            ApplicationLifetime.ApplicationStopping.Register(Stop);

            new Thread(Run).Start(); // Otherwise this would block and prevent IHost.StartAsync from finishing.
            return _delayStart.Task;
        }

        private void Run()
        {
            try
            {
                Run(this); // This blocks until the service is stopped.
                _delayStart.TrySetException(new InvalidOperationException("Stopped without starting"));
            }
            catch (Exception ex)
            {
                _delayStart.TrySetException(ex);
            }
        }

        public Task StopAsync(CancellationToken cancellationToken)
        {
            Stop();
            return Task.CompletedTask;
        }

        // Called by base.Run when the service is ready to start.
        protected override void OnStart(string[] args)
        {
            _delayStart.TrySetResult(null);
            base.OnStart(args);
        }

        // Called by base.Stop. This may be called multiple times by service Stop, ApplicationStopping, and StopAsync.
        // That's OK because StopApplication uses a CancellationTokenSource and prevents any recursion.
        protected override void OnStop()
        {
            ApplicationLifetime.StopApplication();
            base.OnStop();
        }
    }
}

using Microsoft.Extensions.DependencyInjection;
using Microsoft.Extensions.Hosting;
using System.Threading;
using System.Threading.Tasks;

namespace ConsoleApp4
{
    public static class ServiceBaseLifetimeHostExtensions
    {
        public static IHostBuilder UseServiceBaseLifetime(this IHostBuilder hostBuilder)
        {
            return hostBuilder.ConfigureServices((hostContext, services) => services.AddSingleton<IHostLifetime, ServiceBaseLifetime>());
        }

        public static void RunAsService(this IHostBuilder hostBuilder)
        {
            hostBuilder.UseServiceBaseLifetime().Build().Run();
        }

        public static Task RunAsServiceAsync(this IHostBuilder hostBuilder)
        {
            return hostBuilder.UseServiceBaseLifetime().Build().RunAsync(CancellationToken.None);
        }
    }

}

using Microsoft.Extensions.Hosting;
using System;
using System.Collections.Generic;
using System.IO;
using System.Text;
using System.Threading;
using System.Threading.Tasks;
using System.Timers;

namespace ConsoleApp4
{
   
    public class TestService: IHostedService,IDisposable
    {
         readonly System.Timers.Timer tmBak = new System.Timers.Timer();

        public TestService()
        {
            tmBak.Interval = 1000;//1秒执行1次
            tmBak.AutoReset = true;//执行1次false,一直执行true
            tmBak.Enabled = true;
            tmBak.Elapsed += (sender, eventArgs) =>
            {
                using (StreamWriter sw = new StreamWriter("D:\\log.txt",true))
                {
                    sw.WriteLine($"AntDeploy Windows服务：{DateTime.Now:yyyy-MM-dd HH:mm:ss}");
                }
            };
        }


        public Task StartAsync(CancellationToken cancellationToken)
        {
            tmBak.Start();
            return Task.CompletedTask;
        }

        public Task StopAsync(CancellationToken cancellationToken)
        {
            tmBak.Stop();
            return Task.CompletedTask;
        }

        public void Dispose()
        {
            this.tmBak.Dispose();
        }
    }
}

using Microsoft.Extensions.DependencyInjection;
using Microsoft.Extensions.Hosting;
using System;
using System.Diagnostics;
using System.IO;
using System.Linq;
using System.Runtime.InteropServices;
using System.Threading.Tasks;

namespace ConsoleApp4
{
    class Program
    {
        // P/Invoke declarations for Windows.
        [DllImport("kernel32.dll")] static extern IntPtr GetConsoleWindow();
        [DllImport("user32.dll")] static extern bool IsWindowVisible(IntPtr hWnd);
        public static bool HaveVisibleConsole()
        {
            return RuntimeInformation.IsOSPlatform(OSPlatform.Windows) ?
                          IsWindowVisible(GetConsoleWindow())
                          :
                          Console.WindowHeight > 0;
        }

        private static async Task Main(string[] args)
        {
            var pathToExe = Process.GetCurrentProcess().MainModule.FileName;
            var pathToContentRoot = Path.GetDirectoryName(pathToExe);
            Directory.SetCurrentDirectory(pathToContentRoot);

            var isService = !(Debugger.IsAttached || args.Contains("--console"));

            if (HaveVisibleConsole()) isService = false;
            var builder = new HostBuilder()
                .ConfigureServices((hostContext, services) =>
                {
                    services.AddHostedService<TestService>();
                });

            if (isService)
            {
                await builder.RunAsServiceAsync();
            }
            else
            {
                await builder.RunConsoleAsync();
            }
        }
    }
}