ServiceControllerExtensions is a class containg extension-methods for System.ServiceProcess.ServiceController class.

ServiceControllerExtensions

using System.ServiceProcess;
using System.Threading;

namespace Helpers
{
    public static class ServiceControllerExtensions
    {
        public static void StopAndWait(this ServiceController service)
        {
            if (service.Status != ServiceControllerStatus.Stopped)
                service.Stop();

            while (service.Status != ServiceControllerStatus.Stopped)
            {
                Thread.Sleep(10);
                service.Refresh();
            }
        }

        public static void StartAndWait(this ServiceController service)
        {
            if (service.Status != ServiceControllerStatus.Running)
                service.Start();

            while (service.Status != ServiceControllerStatus.Running)
            {
                Thread.Sleep(10);
                service.Refresh();
            }
        }
    }
}