Application.SetSuspendState Method (PowerState, Boolean, Boolean)


The .NET API Reference documentation has a new home. Visit the .NET API Browser on to see the new experience.

Suspends or hibernates the system, or requests that the system be suspended or hibernated.

Namespace:   System.Windows.Forms
Assembly:  System.Windows.Forms (in System.Windows.Forms.dll)

public static bool SetSuspendState(
	PowerState state,
	bool force,
	bool disableWakeEvent


Type: System.Windows.Forms.PowerState

A PowerState indicating the power activity mode to which to transition.

Type: System.Boolean

true to force the suspended mode immediately; false to cause Windows to send a suspend request to every application.

Type: System.Boolean

true to disable restoring the system's power status to active on a wake event, false to enable restoring the system's power status to active on a wake event.

Return Value

Type: System.Boolean

true if the system is being suspended, otherwise, false.

If an application does not respond to a suspend request within 20 seconds, Windows determines that it is in a non-responsive state, and that the application can either be put to sleep or terminated. Once an application responds to a suspend request, however, it can take whatever time it needs to clean up resources and shut down active processes.

.NET Framework
Available since 2.0
Return to top