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ServiceBase.OnCustomCommand Method

When implemented in a derived class, OnCustomCommand executes when the Service Control Manager (SCM) passes a custom command to the service. Specifies actions to take when a command with the specified parameter value occurs.

Namespace:  System.ServiceProcess
Assembly:  System.ServiceProcess (in System.ServiceProcess.dll)

protected virtual void OnCustomCommand(
	int command
)

Parameters

command
Type: System.Int32

The command message sent to the service.

OnCustomCommand lets you specify additional functionality beyond starting, stopping, pausing and continuing services.

The SCM does not examine the custom command to verify whether the service supports the command parameter passed in. It passes the custom command directly to the service. If the service does not recognize the command parameter, it does nothing.

Custom commands are raised by an ExecuteCommand statement in a ServiceController component. Use a switch statement or if..then condition to handle the custom commands you define on your service.

The only values for a custom command that you can define in your application or use in OnCustomCommand are those between 128 and 256. Integers below 128 correspond to system-reserved values.

If the AutoLog property is true, custom commands, like all other commands, write entries to the event log to report whether the method execution succeeded or failed.

Windows 7, Windows Vista, Windows XP SP2, Windows XP Media Center Edition, Windows XP Professional x64 Edition, Windows XP Starter Edition, Windows Server 2008 R2, Windows Server 2008, Windows Server 2003, Windows Server 2000 SP4, Windows Millennium Edition, Windows 98

The .NET Framework and .NET Compact Framework do not support all versions of every platform. For a list of the supported versions, see .NET Framework System Requirements.

.NET Framework

Supported in: 3.5, 3.0, 2.0, 1.1, 1.0

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