Restart a service with dependent services?

Question

Starting with a csharp-example and duly noting related SO questions ( Restart a windows services from C# and Cannot restart a Service) and various other questions relating to

Answer 1

Alright, finally implemented this. I've posted it as a separate answer as I had already come to this conclusion in the original update to my question, which was posted prior to the first answer.

Again, the StartService(), StopService() and RestartService() methods follow the conventions outlined in the examples and such already referenced in the question itself (i.e. they wrap Start/Stop behavior to avoid "already started/stopped"-type exceptions) with the addendum that if a Service is passed in (as is the case below), Refresh() is called on that service before checking its Status.

public static void RestartServiceWithDependents(ServiceController service, TimeSpan timeout)
{
    int tickCount1 = Environment.TickCount; // record when the task started

    // Get a list of all services that depend on this one (including nested
    //  dependencies)
    ServiceController[] dependentServices = service.DependentServices;

    // Restart the base service - will stop dependent services first
    RestartService(service, timeout);

    // Restore dependent services to their previous state - works because no
    //  Refresh() has taken place on this collection, so while the dependent
    //  services themselves may have been stopped in the meantime, their
    //  previous state is preserved in the collection.
    foreach (ServiceController dependentService in dependentServices)
    {
        // record when the previous task "ended"
        int tickCount2 = Environment.TickCount;
        // update remaining timeout
        timeout.Subtract(TimeSpan.FromMilliseconds(tickCount2 - tickCount1));
        // update task start time
        tickCount1 = tickCount2;
        switch (dependentService.Status)
        {
            case ServiceControllerStatus.Stopped:
            case ServiceControllerStatus.StopPending:
                // This Stop/StopPending section isn't really necessary in this
                //  case as it doesn't *do* anything, but it's included for
                //  completeness & to make the code easier to understand...
                break;
            case ServiceControllerStatus.Running:
            case ServiceControllerStatus.StartPending:
                StartService(dependentService, timeout);
                break;
            case ServiceControllerStatus.Paused:
            case ServiceControllerStatus.PausePending:
                StartService(dependentService, timeout);
                // I don't "wait" here for pause, but you can if you want to...
                dependentService.Pause();
                break;
        }
    }
}