NullRefExceptio n in windows service

[lajo_79]

Hello

I get the following error when i trying to run a function from
OnStart() in my win-service:
"Object Reference not set to an instance of an object" and the
stacktrace only gives me the function name (setEvents), nothing
else...

protected override void Onstart(string [] args)
{
init_timers();
init_object_lis t();
setEvents(true) ; //the stacktrace tells me that this function
generated the exception
}

the function also gets called every time a timer elapses with the exact
same error. I have tried writing to the system logg in the function to
see how far down the function the service gets before the exception
gets thrown, but it seems it stoppes instantly (first row) and the only
thing that happenes there is a declaration of a string variable. string
foo = "stringval" ;
--
lajo_79
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[lajo_79]

my guesses are that the exception gets thrown when the function gets
called...
--
lajo_79
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[Ignacio Machin \( .NET/ C# MVP \)]

hi,

Put the solution in debug mode, install the windows service and make sure
it does contains the .pdb file, then in the stacktrace you will see the
line number where the exception occured.

You are using a variable without proper initialization,

If you say that this happen also in a timer event, why don't you put an
breakpoint in the method and the first time the timer's event is fired you
will see why it fails.
cheers,

--
Ignacio Machin,
ignacio.machin AT dot.state.fl.us
Florida Department Of Transportation

"lajo_79" <la************ @no-mx.forums.yourd omain.com.au> wrote in message
news:la******** ****@no-mx.forums.yourd omain.com.au...

Hello

I get the following error when i trying to run a function from
OnStart() in my win-service:
"Object Reference not set to an instance of an object" and the
stacktrace only gives me the function name (setEvents), nothing
else...

protected override void Onstart(string [] args)
{
init_timers();
init_object_lis t();
setEvents(true) ; //the stacktrace tells me that this function
generated the exception
}

the function also gets called every time a timer elapses with the exact
same error. I have tried writing to the system logg in the function to
see how far down the function the service gets before the exception
gets thrown, but it seems it stoppes instantly (first row) and the only
thing that happenes there is a declaration of a string variable. string
foo = "stringval" ;
--
lajo_79
------------------------------------------------------------------------
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View this thread: http://www.highdots.com/forums/t3018668

[lajo_79]

the pdb file wasn´t in the setup solution i am using... now its
included and the row number was found!! thank you.. still remains to
evalute the problem but now i know on which line
--
lajo_79
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[Ignacio Machin \( .NET/ C# MVP \)]

Hi,

Good to ear, you do know the problem though, in that line you are using a
variable which was not assigned before ( or is assigned to null for that
matter)

cheers,

--
Ignacio Machin,
ignacio.machin AT dot.state.fl.us
Florida Department Of Transportation

"lajo_79" <la************ @no-mx.forums.yourd omain.com.au> wrote in message
news:la******** ****@no-mx.forums.yourd omain.com.au...

the pdb file wasn´t in the setup solution i am using... now its
included and the row number was found!! thank you.. still remains to
evalute the problem but now i know on which line
--
lajo_79
------------------------------------------------------------------------
lajo_79's Profile: http://www.highdots.com/forums/m918
View this thread: http://www.highdots.com/forums/t3018668