UpDownBase.OnTextBoxLostFocus(Object, EventArgs) Method


Raises the LostFocus event.

 virtual void OnTextBoxLostFocus(System::Object ^ source, EventArgs ^ e);
protected virtual void OnTextBoxLostFocus (object source, EventArgs e);
abstract member OnTextBoxLostFocus : obj * EventArgs -> unit
override this.OnTextBoxLostFocus : obj * EventArgs -> unit
Protected Overridable Sub OnTextBoxLostFocus (source As Object, e As EventArgs)



The source of the event.


An EventArgs that contains the event data.


This method validates the text in the text box portion of the control when the spin box (also known as an up-down control) loses focus.

Raising an event invokes the event handler through a delegate. For more information, see Handling and Raising Events.

The OnTextBoxLostFocus 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 OnTextBoxLostFocus(Object, EventArgs) in a derived class, be sure to call the base class's OnTextBoxLostFocus(Object, EventArgs) method so that registered delegates receive the event.

Applies to

See also