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SetSuspendState Method

Application.SetSuspendState Method

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

Supported in: 4.6, 4.5, 4, 3.5, 3.0, 2.0

.NET Framework Client Profile

Supported in: 4, 3.5 SP1
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