Down Base. On Text Box Key Down(Object, KeyEventArgs) Method
Raises the KeyDown event.
protected: virtual void OnTextBoxKeyDown(System::Object ^ source, System::Windows::Forms::KeyEventArgs ^ e);
protected virtual void OnTextBoxKeyDown (object source, System.Windows.Forms.KeyEventArgs e);
abstract member OnTextBoxKeyDown : obj * System.Windows.Forms.KeyEventArgs -> unit override this.OnTextBoxKeyDown : obj * System.Windows.Forms.KeyEventArgs -> unit
Protected Overridable Sub OnTextBoxKeyDown (source As Object, e As KeyEventArgs)
The source of the event.
If the InterceptArrowKeys property is set to
true and the user presses the UP ARROW key, the UpButton method is called. Likewise, if the user presses the DOWN ARROW key, the DownButton method is called.
Raising an event invokes the event handler through a delegate. For more information, see Handling and Raising Events.
The OnTextBoxKeyDown 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 OnTextBoxKeyDown(Object, KeyEventArgs) in a derived class, be sure to call the base class's OnTextBoxKeyDown(Object, KeyEventArgs) method so that registered delegates receive the event.