Implementing the new Worker Service projects

The new Worker Services and the generic hosting in ASP.NET Core 3.0 and later make it pretty easy to create simple service-like applications that can do some stuff without the full blown ASP.NET stack – and without a web server.

You can create this project with the following command:

dotnet new worker -n BackgroundServiceSample -o BackgroundServiceSample

Basically, this creates a console application with Program.cs and Worker.cs in it. The Worker.cs file contains the BackgroundService class. The Program.cs file looks pretty familiar but without WebHostBuilder:

public class Program
{
    public static void Main(string[] args)
    {
        CreateHostBuilder(args).Build().Run();
    }
    public static IHostBuilder CreateHostBuilder(string[] 
      args) =>
  ...