How to create Service like Windows in Asp.net core?

Question

There is a different way to create service in Aspnet core. IHostedService interface is used to create services like Windows Service.

Use IHostedService in the WebApi project and deploy it as a Web project. As soon as the API project will start your service gets started.

Service Code: Create a Class MyHostedService.cs and put the below code into this class.

Class

public class MyHostedService:IHostedService 
{
  private Timer _timer { get; set; }
}

Start

public Task StartAsync(CancellationToken cancellationToken)
{ 
    _timer = new Timer(DoWork, null, TimeSpan.Zero, TimeSpan.FromMinutes(OrderExportPurgeTimeInterval));
    return Task.CompletedTask;
}   

Stop

public Task StopAsync(CancellationToken cancellationToken)
{
    _timer ?.Change(Timeout.Infinite, 0);
    return Task.CompletedTask;
}

Your DoWork

private void DoWork(object state)
{
    bool hasLock = false;
    try
      {
        Monitor.TryEnter(_locker, ref hasLock);
        if (hasLock)
        {
            PurgeProcessor.ProcessPurge().Wait();
        }
      }
      finally
      {
          if (hasLock) Monitor.Exit(_locker);
      }
 }

Startup.cs

services.AddHostedService<MyHostedService>();