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CanRaiseEvents Property
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Component.CanRaiseEvents Property

Gets a value indicating whether the component can raise an event.

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

protected virtual bool CanRaiseEvents { get; }

Property Value

Type: System.Boolean
true if the component can raise events; otherwise, false. The default is true.

The default implementation of this property always returns true. Classes that inherit from the Component class should override this property to provide the ability to disable the raising of events. For example, in the Control class, if the control is being hosted as an ActiveX control, the CanRaiseEvents property returns false if the ActiveX control has its events frozen.

Notes to Inheritors

If you override this method in a deriving class and change it to return false, the EventHandlerList collection returned by the Events property returns null for an event. Events can still be added and removed from the collection, but the collection's Item property will always return null.

.NET Framework

Supported in: 4, 3.5, 3.0, 2.0

.NET Framework Client Profile

Supported in: 4, 3.5 SP1

Windows 7, Windows Vista SP1 or later, Windows XP SP3, Windows XP SP2 x64 Edition, Windows Server 2008 (Server Core not supported), Windows Server 2008 R2 (Server Core supported with SP1 or later), Windows Server 2003 SP2

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

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