Represents the method implemented by the UI Automation client application to handle the event raised by a UI Automation provider when the focus has changed.
public delegate void AutomationFocusChangedEventHandler(
delegate to define the method that is called by a client to handle UI Automation focus-changed events. AutomationFocusChangedEventHandler
represented by AutomationElement sender might not have any cached properties or patterns, depending on whether the application subscribed to this event while a was active. CacheRequest
The following example implements a delegate to handle focus-changed events.
private void OnFocusChanged( object src, AutomationFocusChangedEventArgs e)
AutomationElement elementFocused = src as AutomationElement;
// TODO: Do something in response to the focus change.
Supported in: 4.5.2, 4.5.1, 4.5, 4, 3.5, 3.0
.NET Framework Client Profile
Supported in: 4, 3.5 SP1
Windows 8.1, Windows Server 2012 R2, Windows 8, Windows Server 2012, Windows 7, Windows Vista SP2, Windows Server 2008 (Server Core Role not supported), Windows Server 2008 R2 (Server Core Role supported with SP1 or later; Itanium not supported)
The .NET Framework does not support all versions of every platform. For a list of the supported versions, see .NET Framework System Requirements.