Windows service doesn't hit Onstart() method.

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I have created a windows service my WCF and when i stop the the service and i run the application it is not throwing any error.When i debug it dint even hit onstart method of windows service.

C#

protected override void OnStart(string[] args)
       {
           System.Diagnostics.Debugger.Launch();
           if (myServiceHost != null)
           {
               myServiceHost.Close();
           }
           myServiceHost = new ServiceHost(typeof(Service1));
           myServiceHost.Open();
       }

How can i debug the onstart() method?

Posted 26-Aug-13 18:01pm

shacha

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Sergey Alexandrovich Kryukov · Answer 1 · 2013-08-26T18:46:00

Solution 1

Apparently, if you show some method which is never called (called, not "hit"), and nothing except this method, you don't show the code where your problem is. The problem is always outside this method. Isn't this obvious?

Besides, I cannot be 100% sure that your conclusion that the method is never called. Debugging of a Windows Service is not such a trivial thing. I'm not even sure you attempted to start the Service correctly. It cannot be started as a regular application. It won't behave like a Service unless it is started by a Service Controlled, which is a special application host.

So, you should get one of the basic principles, and this is all, based on the information you provided. From this point, you can start your investigation. Here is a hint for you: if this method is not called, you did not even start developing a Windows Service. Please see:
http://msdn.microsoft.com/en-us/library/y817hyb6.aspx[^],
http://msdn.microsoft.com/en-us/library/zt39148a.aspx[^].

—SA

Posted 26-Aug-13 18:46pm

Sergey Alexandrovich Kryukov

Comments

shacha 27-Aug-13 1:00am

But the thing is even though i have stopped the service the application is running, but i should get some error right?

I have created a service and installed it in the services and it is running.

Sergey Alexandrovich Kryukov 27-Aug-13 1:00am

No, why?
—SA

shacha 27-Aug-13 1:05am

Even though if i run the application when the service is stopped then what is the use of hosting a service using WAS?

Sergey Alexandrovich Kryukov 27-Aug-13 1:19am

Here:

Sergey Alexandrovich Kryukov 27-Aug-13 1:19am

Here:
http://msdn.microsoft.com/en-us/library/system.servicemodel.servicehost.aspx.

I have no idea why do you use it in this method. :-)

—SA

shacha 27-Aug-13 1:23am

Then if i stop the service how can i run my application?? without any error?

Sergey Alexandrovich Kryukov 27-Aug-13 1:27am

In a general case, stopping a service does not cause any errors. (What do you mean by "error" by the way?)
—SA

shacha 27-Aug-13 1:30am

I mean if the service is not running it should throw some error(the service is not running or something else) right?? and whenever i run the application the debugger should go to onstart method then it should start the service.

I worked this example by help of this

http://msdn.microsoft.com/en-us/library/ff649818.aspx

Sergey Alexandrovich Kryukov 27-Aug-13 1:50am

No, it may not throw any exception (exception, not "error"!)...
—SA

shacha 27-Aug-13 2:08am

As i am new to windows service hosting i dont know much about this,so i thought i may get an exception when i stop the service.But i am confused if i am doing right or not? :(

Sergey Alexandrovich Kryukov 27-Aug-13 2:15am

As I tried to explain, it's hard to say looking only at the code you presented. As I understand, you goal is just to debug the problem of invocation of this and other events. I used different method of debugging, which is pretty advanced: I develop a dual-mode application: it could be debugged as a regular application and ran without debugging under the service controller. Also, I used System.Diagnostic.EventLog. It was enough for me.
—SA

Windows service doesn't hit Onstart() method.

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Windows service doesn't hit Onstart() method.

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