How can I restart a windows service programmatically in .NET

Question

How can I restart a windows service programmatically in .NET?
Also, I need to do an operation when the service restart is completed.

Answer 1

Take a look at the ServiceController class.

To perform the operation that needs to be done when the service is restarted, I guess you should do that in the Service yourself (if it is your own service).
If you do not have access to the source of the service, then perhaps you can use the WaitForStatus method of the ServiceController.

Answer 2

This article uses the ServiceController class to write methods for Starting, Stopping, and Restarting Windows services; it might be worth taking a look at.

Snippet from the article (the "Restart Service" method):

public static void RestartService(string serviceName, int timeoutMilliseconds)
{
  ServiceController service = new ServiceController(serviceName);
  try
  {
    int millisec1 = Environment.TickCount;
    TimeSpan timeout = TimeSpan.FromMilliseconds(timeoutMilliseconds);

    service.Stop();
    service.WaitForStatus(ServiceControllerStatus.Stopped, timeout);

    // count the rest of the timeout
    int millisec2 = Environment.TickCount;
    timeout = TimeSpan.FromMilliseconds(timeoutMilliseconds - (millisec2-millisec1));

    service.Start();
    service.WaitForStatus(ServiceControllerStatus.Running, timeout);
  }
  catch
  {
    // ...
  }
}

Answer 3

An example using by ServiceController Class

private void RestartWindowsService(string serviceName)
{
    ServiceController serviceController = new ServiceController(serviceName);
    try
    {
        if ((serviceController.Status.Equals(ServiceControllerStatus.Running)) || (serviceController.Status.Equals(ServiceControllerStatus.StartPending)))
        {
            serviceController.Stop();
        }
        serviceController.WaitForStatus(ServiceControllerStatus.Stopped);
        serviceController.Start();
        serviceController.WaitForStatus(ServiceControllerStatus.Running);
    }
    catch
    {
        ShowMsg(AppTexts.Information, AppTexts.SystematicError, MessageBox.Icon.WARNING);
    }
}

Answer 4

You could also call the net command to do this. Example:

System.Diagnostics.Process.Start("net", "stop IISAdmin");
System.Diagnostics.Process.Start("net", "start IISAdmin");

Answer 5

This answer is based on @Donut Answer (the most up-voted answer of this question), but with some modifications.

1. Disposing of ServiceController class after each use, because it implements IDisposable interface.
2. Reduce the parameters of the method: there is no need to the serviceName parameter being passed for each method, we can set it in the constructor, and each other method will use that service name.
   This is also more OOP friendly.
3. Handle the catch exception in a way that this class could be used as a component.
4. Remove the timeoutMilliseconds parameter from each method.
5. Add two new methods StartOrRestart and StopServiceIfRunning, which could be considered as a wrapper for other basic methods, The purpose of those methods are only to avoid exceptions, as described in the comment.

Here is the class

public class WindowsServiceController
{
    private string serviceName;

    public WindowsServiceController(string serviceName)
    {
        this.serviceName = serviceName;
    }

    // this method will throw an exception if the service is NOT in Running status.
    public void RestartService()
    {
        using (ServiceController service = new ServiceController(serviceName))
        {
            try
            {
                service.Stop();
                service.WaitForStatus(ServiceControllerStatus.Stopped);

                service.Start();
                service.WaitForStatus(ServiceControllerStatus.Running);
            }
            catch (Exception ex)
            {
                throw new Exception($"Can not restart the Windows Service {serviceName}", ex);
            }
        }
    }

    // this method will throw an exception if the service is NOT in Running status.
    public void StopService()
    {
        using (ServiceController service = new ServiceController(serviceName))
        {
            try
            {
                service.Stop();
                service.WaitForStatus(ServiceControllerStatus.Stopped);
            }
            catch (Exception ex)
            {
                throw new Exception($"Can not Stop the Windows Service [{serviceName}]", ex);
            }
        }
    }

    // this method will throw an exception if the service is NOT in Stopped status.
    public void StartService()
    {
        using (ServiceController service = new ServiceController(serviceName))
        {
            try
            {
                service.Start();
                service.WaitForStatus(ServiceControllerStatus.Running);
            }
            catch (Exception ex)
            {
                throw new Exception($"Can not Start the Windows Service [{serviceName}]", ex);
            }
        }
    }

    // if service running then restart the service if the service is stopped then start it.
    // this method will not throw an exception.
    public void StartOrRestart()
    {
        if (IsRunningStatus)
            RestartService();
        else if (IsStoppedStatus)
            StartService();
    }

    // stop the service if it is running. if it is already stopped then do nothing.
    // this method will not throw an exception if the service is in Stopped status.
    public void StopServiceIfRunning()
    {
        using (ServiceController service = new ServiceController(serviceName))
        {
            try
            {
                if (!IsRunningStatus)
                    return;

                service.Stop();
                service.WaitForStatus(ServiceControllerStatus.Stopped);
            }
            catch (Exception ex)
            {
                throw new Exception($"Can not Stop the Windows Service [{serviceName}]", ex);
            }
        }
    }

    public bool IsRunningStatus => Status == ServiceControllerStatus.Running;

    public bool IsStoppedStatus => Status == ServiceControllerStatus.Stopped;

    public ServiceControllerStatus Status
    {
        get
        {
            using (ServiceController service = new ServiceController(serviceName))
            {
                return service.Status;
            }
        }
    }
}

Answer 6

How about

var theController = new System.ServiceProcess.ServiceController("IISAdmin");

theController.Stop();
theController.Start();

Don't forget to add the System.ServiceProcess.dll to your project for this to work.

Answer 7

See this article.

Here is a snippet from the article.

//[QUICK CODE] FOR THE IMPATIENT
using System;
using System.Collections.Generic;
using System.Text;
// ADD "using System.ServiceProcess;" after you add the 
// Reference to the System.ServiceProcess in the solution Explorer
using System.ServiceProcess;
namespace Using_ServiceController{
    class Program{
        static void Main(string[] args){
            ServiceController myService = new ServiceController();
            myService.ServiceName = "ImapiService";
            string svcStatus = myService.Status.ToString();
                if (svcStatus == "Running"){
                    myService.Stop();
                }else if(svcStatus == "Stopped"){
                    myService.Start();
                }else{
                    myService.Stop();
                }
        }
    }
}

Answer 8

Call Environment.Exit with an error code greater than 0, which seems appropriate, then on install we configure the service to restart on error.

Environment.Exit(1);

I have done same thing in my Service. It is working fine.