Control.OnHelpRequested Method (HelpEventArgs)


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Raises the HelpRequested event.

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

protected virtual void OnHelpRequested(
	HelpEventArgs hevent


Type: System.Windows.Forms.HelpEventArgs

A HelpEventArgs that contains the event data.

Raising an event invokes the event handler through a delegate. For more information, see Handling and Raising Events.

The OnHelpRequested method also allows derived classes to handle the event without attaching a delegate. This is the preferred technique for handling the event in a derived class.

Notes to Inheritors:

When overriding OnHelpRequested in a derived class, be sure to call the base class's OnHelpRequested method so that registered delegates receive the event.

.NET Framework
Available since 1.1
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