OnLostFocus Method

RichTextBox.OnLostFocus Method

[ This article is for Windows Phone 8 developers. If you’re developing for Windows 10, see the latest documentation. ]

Called before the LostFocus event occurs.

Namespace:  System.Windows.Controls
Assembly:  System.Windows (in System.Windows.dll)

protected override void OnLostFocus(
	RoutedEventArgs e
)

Parameters

e
Type: System.Windows.RoutedEventArgs
The data for the event.

The OnLostFocus method is called before any event handler for the LostFocus event is called. This method allows derived classes to handle the LostFocus event without attaching a delegate. This is the preferred technique for handling the event in a derived class.

By default, when the RichTextBox control has lost focus, the selected text in the RichTextBox is not visible..

Notes to Inheritors

When overriding the OnLostFocus method in a derived class, be sure to call the base class’s OnLostFocus method so that registered delegates receive the event.

Windows Phone OS

Supported in: 8.1, 8.0, 7.1

Windows Phone

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