Control.OnPreviewKeyDown(PreviewKeyDownEventArgs) Control.OnPreviewKeyDown(PreviewKeyDownEventArgs) Control.OnPreviewKeyDown(PreviewKeyDownEventArgs) Control.OnPreviewKeyDown(PreviewKeyDownEventArgs) Method

Definition

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)

Parameters

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.

Applies to