How to: Start Services

After a service is installed, it must be started. Starting calls the OnStart method on the service class. Usually, the OnStart method defines the useful work the service will perform. After a service starts, it remains active until it is manually paused or stopped.

Services can be set up to start automatically or manually. A service that starts automatically will be started when the computer on which it is installed is rebooted or first turned on. A user must start a service that starts manually.

There are several ways you can manually start a service — from Server Explorer, from the Services Control Manager, or from code using a component called the ServiceController. For an overview of ServiceController components, see Monitoring Windows Services.

You set the StartType property on the ServiceInstaller class to determine whether a service should be started manually or automatically.

To specify how a service should start

1. After creating your service, add the necessary installers for it. For more information, see How to: Add Installers to Your Service Application.

2. In the designer, click the service installer for the service you are working with.

3. In the Properties window, set the StartType property to one of the following:

   To have your service install	Set this value
   When the computer is restarted	Automatic
   When an explicit user action starts the service	Manual

   Tip

   To prevent your service from being started at all, you can set the StartType property to Disabled. You might do this if you are going to reboot a server several times and want to save time by preventing the services that would normally start from starting up.

   Note

   These and other properties can be changed after your service is installed.

   There are several ways you can start a service that has its StartType process set to Manual — from Server Explorer, from the Windows Services Control Manager, or from code. It is important to note that not all of these methods actually start the service in the context of the Services Control Manager; Server Explorer and programmatic methods of starting the service actually manipulate the controller.

To manually start a service from Server Explorer

1. In Server Explorer, add the server you want if it is not already listed. For more information, see How to: Access and Initialize Server Explorer/Database Explorer.

   Note

   The Servers node of Server Explorer is not available in the Standard Edition of Visual Studio.

2. Expand the Services node, and then locate the service you want to start.

3. Right-click the name of the service, and click Start.

To manually start a service from Services Control Manager

1. Open the Services Control Manager by doing one of the following:

   • In Windows XP and 2000 Professional, right-click My Computer on the desktop, and then click Manage. In the dialog box that appears, expand the Services and Applications node.

     - or -

   • In Windows Server 2003 and Windows 2000 Server, click Start, point to Programs, click Administrative Tools, and then click Services.

     Note

     In Windows NT version 4.0, you can open this dialog box from Control Panel.

   You should now see your service listed in the Services section of the window.

2. Select your service in the list, right-click it, and then click Start.

To manually start a service from code

1. Create an instance of the ServiceController class, and configure it to interact with the service you want to administer. For more information, see How to: Create ServiceController Component Instances.

2. Call the Start method to start the service.

See Also

Tasks

How to: Create Windows Services

How to: Add Installers to Your Service Application

How to: Perform Administrative Tasks on Services

Concepts

Introduction to Windows Service Applications

Reference

How to: Access and Initialize Server Explorer/Database Explorer