Yoyo Services

[Reuben]

Hi,
I've been trying to create a windows service that handles some system
events, but when I try to start it stops immediately; it yoyos. I read
somewhere that even a the service template should keep running but I built a
copy of it and it too yoyoed. I've tried putting infinite Thread.Sleep loops
in the Main method but they don't work. Is there something that I've
forgotten to put in my code? I feel like I've tried everything!

From,
Reuben

[Daniel O'Connell [C# MVP]]

Re: Yoyo Services


"Reuben" <Reuben@discuss ions.microsoft. com> wrote in message
news:FD351511-EB12-4F24-B6B8-CD7CF0881497@mi crosoft.com...[color=blue]
> Hi,
> I've been trying to create a windows service that handles some system
> events, but when I try to start it stops immediately; it yoyos. I read
> somewhere that even a the service template should keep running but I built
> a
> copy of it and it too yoyoed. I've tried putting infinite Thread.Sleep
> loops
> in the Main method but they don't work. Is there something that I've
> forgotten to put in my code? I feel like I've tried everything!
>[/color]

Built a copy of what? The template or your service?

First thing, check your event log and see if there is any mention of why the
service is stopping. Then add logging to your service to see where its
stopping. If you can narrow it down to where the problem is it'll be much
easier to fix.

[Reuben]

Re: Yoyo Services

Thanks. I've found out that an exception occurs in the OnStart function when
I try to hook up my event handler to
Microsoft.Win32 .SystemEvents.S essionEnding. Problem s, I don't understand it.
Do you (see below).
Thanks for your help.
Reuben.
=============== =============== =============== ========
Event Type: Error
Event Source: Symbiosis
Event Category: None
Event ID: 0
Date: 30/09/2005
Time: 5:04:31 PM
User: N/A
Computer: MAIN
Description:
The description for Event ID ( 0 ) in Source ( Symbiosis ) cannot be found.
The local computer may not have the necessary registry information or message
DLL files to display messages from a remote computer. You may be able to use
the /AUXSOURCE= flag to retrieve this description; see Help and Support for
details. The following information is part of the event: Service cannot be
started. System.Runtime. InteropServices .ExternalExcept ion: Failed to create
system events window thread.
at Microsoft.Win32 .SystemEvents.E nsureSystemEven ts(Boolean requireHandle,
Boolean throwOnRefusal)
at
Microsoft.Win32 .SystemEvents.a dd_SessionEndin g(SessionEnding EventHandler
value)
at Symbiosis.Symbi osis.OnStart(St ring[] args)
at System.ServiceP rocess.ServiceB ase.ServiceQueu edMainCallback( Object
state).

[EfeCe]

Re: Yoyo Services



"Reuben" wrote:
[color=blue]
> Thanks. I've found out that an exception occurs in the OnStart function when
> I try to hook up my event handler to
> Microsoft.Win32 .SystemEvents.S essionEnding. Problem s, I don't understand it.
> Do you (see below).
> Thanks for your help.
> Reuben.
> =============== =============== =============== ========
> Event Type: Error
> Event Source: Symbiosis
> Event Category: None
> Event ID: 0
> Date: 30/09/2005
> Time: 5:04:31 PM
> User: N/A
> Computer: MAIN
> Description:
> The description for Event ID ( 0 ) in Source ( Symbiosis ) cannot be found.
> The local computer may not have the necessary registry information or message
> DLL files to display messages from a remote computer. You may be able to use
> the /AUXSOURCE= flag to retrieve this description; see Help and Support for
> details. The following information is part of the event: Service cannot be
> started. System.Runtime. InteropServices .ExternalExcept ion: Failed to create
> system events window thread.
> at Microsoft.Win32 .SystemEvents.E nsureSystemEven ts(Boolean requireHandle,
> Boolean throwOnRefusal)
> at
> Microsoft.Win32 .SystemEvents.a dd_SessionEndin g(SessionEnding EventHandler
> value)
> at Symbiosis.Symbi osis.OnStart(St ring[] args)
> at System.ServiceP rocess.ServiceB ase.ServiceQueu edMainCallback( Object
> state).
>[/color]

Reuben,
Try running your service under a Username/Password account and not the
System account. Start from there.
Francisco