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Question

How can I verify if a Windows Service is running

Answer 1

+4 A:

Please have a look on the ServiceController object in .NET.

controlbreak 2008-10-07 12:08:38

Oooh...even better than rolling your own via WMI. I'll remove my answer.

EBGreen 2008-10-07 12:12:50

@EBGreen - I don't know, the WMI route may be useful for someone else in future, there's more than one way to skin a cat, and all that....

Carl 2008-10-07 12:16:06

Ya, but I really do think ServiceController is better over all, so I think I will leave it deleted. I never would have even suggested WMI if I hadn't just woken up. :)

EBGreen 2008-10-07 12:17:56

Answer 2

+22 A:

I guess something like this would work:

using System.ServiceProcess;

ServiceController sc = new ServiceController(SERVICENAME);

switch (sc.Status)
{
    case ServiceControllerStatus.Running:
        return "Running";
    case ServiceControllerStatus.Stopped:
        return "Stopped";
    case ServiceControllerStatus.Paused:
        return "Paused";
    case ServiceControllerStatus.StopPending:
        return "Stopping";
    case ServiceControllerStatus.StartPending:
        return "Starting";
    default:
        return "Status Changing";
}

Edit: There is also a method sc.WaitforStatus() that takes a desired status and a timeout, never used it but it may suit your needs.

Edit: Once you get the status, to get the status again you will need to call sc.Refresh() first.

Carl 2008-10-07 12:10:39

ServiceController.GetServices() retrieves a array that contains all the installed service as ServiceController object. This may help a lot.

controlbreak 2008-10-07 12:13:29

Good call, I don't know if I've ever used that. Even if you never use it, I guess that it would be useful for debugging if nothing else

Carl 2008-10-07 12:18:42

sc.WaitforStatus() was exactly what I need. Thx

edosoft 2008-10-07 12:57:16

Add reference to System.ServiceProcess and add the statement:using System.ServiceProcess;

NealWalters 2009-12-17 14:50:09

If I passed a bad service name, it seemed to lock up instead of throwing an error. I added this code: catch (System.Exception ex) { return "Not found"; }

NealWalters 2009-12-17 16:19:04

NealWalters: How do you know the exception was thrown just because the service was not found? Isn't there a more suitable exception type to catch?

Patrik 2010-02-05 14:27:41

Answer 3

A:

int __fastcall MyServiceStatus(AnsiString aServiceName){

//SERVICE_CONTINUE_PENDING 0x00000005 The service continue is pending.
//SERVICE_PAUSE_PENDING 0x00000006 The service pause is pending.
//SERVICE_PAUSED 0x00000007 The service is paused.
//SERVICE_RUNNING 0x00000004 The service is running.
//SERVICE_START_PENDING 0x00000002 The service is starting.
//SERVICE_STOP_PENDING 0x00000003 The service is stopping.
//SERVICE_STOPPED 0x00000001 The service is not running.

DWORD dwResult      = 0;
SC_HANDLE hSCM      = NULL;
SC_HANDLE hService  = NULL;
do{
// Connect to the SCM
hSCM = ::OpenSCManager( NULL, NULL, SC_MANAGER_CONNECT );
if( hSCM == NULL){
dwResult = GetLastError();
return dwResult;
}
// Open the service
hService = ::OpenService( hSCM, aServiceName.c_str(), SERVICE_STOP | SERVICE_QUERY_STATUS ); //Null not exist
if( hService == NULL ){
dwResult = GetLastError();
return dwResult;
}
// Ask the service to the status
_SERVICE_STATUS pss;

if(!QueryServiceStatus(hService, &pss)){
DWORD dwErrCode = GetLastError();
if( dwErrCode != ERROR_SERVICE_NOT_ACTIVE ){
dwResult = dwErrCode;
return dwResult;
}
}
dwResult = pss.dwCurrentState;
}while(0);

// Cleanup

if( hService != NULL )
CloseServiceHandle( hService );

if( hSCM != NULL )
CloseServiceHandle( hSCM );

return dwResult;
}

Ali Abdalaziz 2010-02-09 10:09:51

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How can I verify if a Windows Service is running

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