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Called before the KeyDown event occurs.
Assembly: System.Windows (in System.Windows.dll)
'Declaration Protected Overridable Sub OnKeyDown ( _ e As KeyEventArgs _ )
protected virtual void OnKeyDown( KeyEventArgs e )
The data for the event.
The OnKeyDown method is called before any event handler for the KeyDown event is called. This method allows derived classes to handle the KeyDown event without attaching a delegate. This is the preferred technique for handling the event in a derived class.
Notes to Inheritors
If you override OnKeyDown, you can prevent registered delegates from receiving events by setting Handled to true. For more information about routed events and the KeyDown property, see Events Overview for Silverlight.
Supported in: 5, 4, 3
Silverlight for Windows Phone
Supported in: Windows Phone OS 7.1, Windows Phone OS 7.0
For a list of the operating systems and browsers that are supported by Silverlight, see Supported Operating Systems and Browsers.