On Preview Key Down(PreviewKeyDownEventArgs) Method
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Raises the PreviewKeyDown event.
protected: virtual void OnPreviewKeyDown(System::Windows::Forms::PreviewKeyDownEventArgs ^ e);
protected virtual void OnPreviewKeyDown (System.Windows.Forms.PreviewKeyDownEventArgs e);
abstract member OnPreviewKeyDown : System.Windows.Forms.PreviewKeyDownEventArgs -> unit override this.OnPreviewKeyDown : System.Windows.Forms.PreviewKeyDownEventArgs -> unit
Protected Overridable Sub OnPreviewKeyDown (e As PreviewKeyDownEventArgs)
Raising an event invokes the event handler through a delegate. For more information, see Handling and Raising Events.
The OnPreviewKeyDown 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 OnPreviewKeyDown(PreviewKeyDownEventArgs) in a derived class, be sure to call the base class's OnPreviewKeyDown(PreviewKeyDownEventArgs) method so that registered delegates receive the event.