How do I debug Windows services in Visual Studio?

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Is it possible to debug the Windows services in Visual Studio?

I used code like

System.Diagnostics.Debugger.Break();

but it is givi

Debug a Windows Service over http (tested with VS 2015 Update 3 and .Net FW 4.6)

Firstly, you have to create a Console Project within your VS Solution(Add -> New Project -> Console Application).

Within the new project, create a class "ConsoleHost" with that code:

class ConsoleHost : IDisposable
{
    public static Uri BaseAddress = new Uri(http://localhost:8161/MyService/mex);
    private ServiceHost host;

    public void Start(Uri baseAddress)
    {
        if (host != null) return;

        host = new ServiceHost(typeof(MyService), baseAddress ?? BaseAddress);

        //binding
        var binding = new BasicHttpBinding()
        {
            Name = "MyService",
            MessageEncoding = WSMessageEncoding.Text,
            TextEncoding = Encoding.UTF8,
            MaxBufferPoolSize = 2147483647,
            MaxBufferSize = 2147483647,
            MaxReceivedMessageSize = 2147483647
        };

        host.Description.Endpoints.Clear();
        host.AddServiceEndpoint(typeof(IMyService), binding, baseAddress ?? BaseAddress);

        // Enable metadata publishing.
        var smb = new ServiceMetadataBehavior
        {
            HttpGetEnabled = true,
            MetadataExporter = { PolicyVersion = PolicyVersion.Policy15 },
        };

        host.Description.Behaviors.Add(smb);

        var defaultBehaviour = host.Description.Behaviors.OfType<ServiceDebugBehavior>().FirstOrDefault();
        if (defaultBehaviour != null)
        {
            defaultBehaviour.IncludeExceptionDetailInFaults = true;
        }

        host.Open();
    }

    public void Stop()
    {
        if (host == null)
            return;

        host.Close();
        host = null;
    }

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

And this is the code for the Program.cs class:

public static class Program
{
    [STAThread]
    public static void Main(string[] args)
    {
        var baseAddress = new Uri(http://localhost:8161/MyService);
        var host = new ConsoleHost();
        host.Start(null);
        Console.WriteLine("The service is ready at {0}", baseAddress);
        Console.WriteLine("Press <Enter> to stop the service.");
        Console.ReadLine();
        host.Stop();
    }
}

Configurations such as connectionstrings should be copied in the App.config file of the Console project.

To sturt up the console, righ-click on Console project and click Debug -> Start new instance.

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误落风尘

2020-11-28 04:14
Use the following code in service OnStart method:
```
System.Diagnostics.Debugger.Launch();
```
Choose the Visual Studio option from the pop up message.

Note: To use it in only Debug mode, a #if DEBUG compiler directive can be used, as follows. This will prevent accidental or debugging in release mode on a production server.
```
#if DEBUG
    System.Diagnostics.Debugger.Launch();
#endif
```
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庸人自扰

2020-11-28 04:17

You can make a console application. I use this main function:

    static void Main(string[] args)
    {
        ImportFileService ws = new ImportFileService();
        ws.OnStart(args);
        while (true)
        {
            ConsoleKeyInfo key = System.Console.ReadKey();
            if (key.Key == ConsoleKey.Escape)
                break;
        }
        ws.OnStop();
    }

My ImportFileService class is exactly the same as in my Windows service's application, except the inheritant (ServiceBase).

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情话喂你

2020-11-28 04:19
Just add a contructor to your service class (if you don't have it already). Below, you can check and example for visual basic .net.
```
Public Sub New()
   OnStart(Nothing) 
End Sub
```
After, that, right-click on project and select "Debug -> Start a new instance".
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醉话见心

2020-11-28 04:20

I'm using the /Console parameter in the Visual Studio project Debug → Start Options → Command line arguments:

public static class Program
{
    [STAThread]
    public static void Main(string[] args)
    {
         var runMode = args.Contains(@"/Console")
             ? WindowsService.RunMode.Console
             : WindowsService.RunMode.WindowsService;
         new WinodwsService().Run(runMode);
    }
}


public class WindowsService : ServiceBase
{
    public enum RunMode
    {
        Console,
        WindowsService
    }

    public void Run(RunMode runMode)
    {
        if (runMode.Equals(RunMode.Console))
        {
            this.StartService();
            Console.WriteLine("Press <ENTER> to stop service...");
            Console.ReadLine();

            this.StopService();
            Console.WriteLine("Press <ENTER> to exit.");
            Console.ReadLine();
        }
        else if (runMode.Equals(RunMode.WindowsService))
        {
            ServiceBase.Run(new[] { this });
        }
    }

    protected override void OnStart(string[] args)
    {
        StartService(args);
    }

    protected override void OnStop()
    {
        StopService();
    }

    /// <summary>
    /// Logic to Start Service
    /// Public accessibility for running as a console application in Visual Studio debugging experience
    /// </summary>
    public virtual void StartService(params string[] args){ ... }

    /// <summary>
    /// Logic to Stop Service
    /// Public accessibility for running as a console application in Visual Studio debugging experience
    /// </summary>
    public virtual void StopService() {....}
}

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