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home / developersection / interviews / how to create a service in .net core?
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Amrith Chandran
Amrith Chandran

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1 Answers

Amrith Chandran
Amrith Chandran 26 Feb 2026
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Creating a service in .NET Core depends on what kind of service you need. Most commonly, this means creating a Worker Service (background service), which can run as a Windows Service or Linux daemon.

Below is the standard way to create a service in modern .NET (Core / .NET 6+).

Method 1: Create a Worker Service

This is the official way using the Worker Service template in .NET.

1: Create a New Worker Service Project

Using .NET CLI:

dotnet new worker -n MyWorkerService
cd MyWorkerService

Or in Visual Studio:

  • File → New Project
  • Select Worker Service
  • Click Create

2: Understand the Generated Files

The template creates:

  • Program.cs
  • Worker.cs

Example Worker.cs:

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

public class Worker : BackgroundService
{
    private readonly ILogger<Worker> _logger;

    public Worker(ILogger<Worker> logger)
    {
        _logger = logger;
    }

    protected override async Task ExecuteAsync(CancellationToken stoppingToken)
    {
        while (!stoppingToken.IsCancellationRequested)
        {
            _logger.LogInformation("Service running at: {time}", DateTimeOffset.Now);
            await Task.Delay(1000, stoppingToken);
        }
    }
}

BackgroundService is used to implement long-running tasks.

3: Register the Service (Program.cs)

In .NET 6+:

using Microsoft.Extensions.DependencyInjection;
using Microsoft.Extensions.Hosting;

IHost host = Host.CreateDefaultBuilder(args)
    .ConfigureServices(services =>
    {
        services.AddHostedService<Worker>();
    })
    .Build();

await host.RunAsync();

4: Run the Service

dotnet run

Run as Windows Service

To run as a real Windows Service:

Install NuGet Package

dotnet add package Microsoft.Extensions.Hosting.WindowsServices

Update Program.cs

Host.CreateDefaultBuilder(args)
    .UseWindowsService()
    .ConfigureServices(services =>
    {
        services.AddHostedService<Worker>();
    });

Publish

dotnet publish -c Release -o publish

Register Service

sc create MyService binPath= "C:\path\to\publish\MyWorkerService.exe"

Then start:

sc start MyService
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