HelpRequested Event

Control.HelpRequested Event

 

Occurs when the user requests help for a control.

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

member HelpRequested : IEvent<HelpEventHandler,
    HelpEventArgs>

The HelpRequested event is commonly raised when the user presses the F1 key or an associated context-sensitive help button is clicked.

For more information about handling events, see Handling and Raising Events.

The following code example demonstrates handling the HelpRequested event to display custom Help content on a form containing four address fields. The HelpRequested event is raised either by pressing the F1 key with the focus in an address field, or by the using the context-sensitive Help button and clicking the Help cursor on an address field. The Handled property is set to true to indicate that the HelpRequested event is handled. The example also demonstrates storing the Help text in the Control.Tag property.

No code example is currently available or this language may not be supported.

.NET Framework
Available since 1.1
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