UIElement.LosingFocus Event

Definition

Occurs before a UIElement loses focus. This event is raised synchronously to ensure focus isn't moved while the event is bubbling.

C#
public event TypedEventHandler<UIElement,LosingFocusEventArgs> LosingFocus;
XAML
<uiElement LosingFocus="eventhandler"/>

Event Type

Windows requirements

Device family
Windows 10 Creators Update (introduced in 10.0.15063.0)
API contract
Windows.Foundation.UniversalApiContract (introduced in v4.0)

Remarks

We recommend using the UIElement focus routed events instead of FocusManager events whenever possible.

Only a single UI element at a time can have focus.

A control can lose focus when another control gets focus, the application view changes, the user switches applications, or the user interacts with the system such that the application is no longer in the foreground.

When programmatically navigating between elements, FocusNavigationDirection.Previous and FocusNavigationDirection.Next cannot be used with FindNextElementOptions. Only FocusNavigationDirection.Up, FocusNavigationDirection.Down, FocusNavigationDirection.Left, or FocusNavigationDirection.Right are valid.

LosingFocus is a routed event. For more info on the routed event concept, see Events and routed events overview.

Applies to

Product Versions
WinRT Build 15063, Build 16299, Build 17134, Build 17763, Build 18362, Build 19041, Build 20348, Build 22000, Build 22621, Build 26100

See also