Windows Services XML Web Services Certification SIG Tom Perkins

E-LEARNING XML WEB SERVICES Chapter 2, Lessons 1 - ?

Reference Windows Services: New Base Classes in.NET Make Writing a Windows Service Easy Ken Getz sues/01/12/NETServ/ sues/01/12/NETServ/

Windows Services Applications (executables -.exe) Run without user context –Don’t have to be logged in to run –no user interface Provide system-level support –System event log –Telephony –Task scheduler

Windows Service Development Fairly easy in.NET; difficult in VB6 or C++ Create a Windows Service Project –Takes care of details Creates a class that inherits from ServiceProcess.ServiceBase class

Service you create Can provide code for: OnStart method OnStop method OnPause method OnContinue method OnShutdown method Service Control Manager (SCM) You interact with the service through SCM requests other services methods react to requests

Installing the Service Service can’t install itself You must provide an installer class –Inherits from Configuration.Install.Installer VS Project (for each service) –Creates ServiceProcessInstaller object Knows how to install service with SCM –Creates ServiceInstaller object Writes info re service to registry

Get Up and Running Create the service project (class) Compile .exe Use InstallUtil to install Control Panel  Services applet –Start the service Debug  use the process containing the service, step thru the code