Control.OnPreviewKeyDown(PreviewKeyDownEventArgs) Method
Definition
Important
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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 -> unitProtected Overridable Sub OnPreviewKeyDown (e As PreviewKeyDownEventArgs)Parameters
A PreviewKeyDownEventArgs that contains the event data.
Remarks
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.
