Windows Service doesn't start

[ofsouto]

Hi, dear

I created a Windows Service Application and I can't start it.
When I remove the System.Timers.Timer the service starts but I need the System.Timers.Timer on application.

When I try to start the service a message shows up:
The service 'XXXX' in Local System was started and stopped. Some services are stopped automatically when there isn't no work, as Logs Service and Performance Alerts.

What's wrong? What can I do to solve this problem?

Thank's in advance.

Obede

 

[Dimandja]

In other words you never got this program to work, right?

What you need to do is debug it; that way you will see exactly what is going on.

Try these links for help on how to debug a Windows Service application:

http://support.microsoft.com/?kbid=824344

http://www.ondotnet.com/pub/a/dotnet/2003/09/02/debuggingsvcs.html

Dimandja

 

[ofsouto]

The Event Logs shows the message bellow:

Service cannot be started. System.NullReferenceException: Object reference not set to an instance of an object.
at Servico_Teste.GC_Carga_Automatica.OnStart(String[] args) in C:\SistCli\net\Gestor Crédito PJ - Carga Automática WEB II\Service1.vb:line 72
at System.ServiceProcess.ServiceBase.ServiceQueuedMainCallback(Object state)

line 72

GCTimer.Interval = System.Configuration.ConfigurationSettings.AppSettings("Intervalo")

app.config

<?xml version="1.0" encoding="utf-8" ?>
<configuration>
<appSettings>
<add key="Intervalo" value="900000"></add>
</appSettings>
</configuration>

 

[chiph]

You need more information about what's happening.

You can use the EventLog class from System.Diagnostics to write debug messages to the NT event log:

Dim el As New EventLog("Application")

' Set up source if it doesn't already exist
If Not EventLog.SourceExists("MySourceName", Environment.MachineName) Then
	EventLog.CreateEventSource("MySourceName", _
		"Application", Environment.MachineName)
End If

' Write debug message
el.WriteEntry("My message goes here", EventLogEntryType.Information)

Chip H.

____________________________________________________________________
If you want to get the best response to a question, please read FAQ222-2244 first

 

[ofsouto]

When I set a value to interval as:
GCTimer.Interval = 1000
the service start but when I set a value as :
Dim dbInterva As Double = Double.Parse("0" & System.Configuration.ConfigurationSettings.AppSettings("Intervalo"))
GCTimer.Interval = dbIntervalo
the service doesn't start and the message bellow (Event log) shows up:

Service cannot be started. System.ArgumentException: '0' is not a valid value for 'Interval'. 'Interval' must be greater than 0.
at System.Timers.Timer.set_Interval(Double value)
at Servico_Teste.GC_Carga_Automatica.OnStart(String[] args) in C:\SistCli\net\Gestor Crédito PJ - Carga Automática WEB II\Service1.vb:line 72
at System.ServiceProcess.ServiceBase.ServiceQueuedMainCallback(Object state)

 

[Dimandja]

Where is dbIntervalo initialized?