Export (0) Print
Expand All
Expand Minimize
This topic has not yet been rated - Rate this topic

AutomationPeer.InvalidatePeer Method

Triggers recalculation of the main properties of the AutomationPeer and raises the PropertyChanged notification to the Automation Client if the properties changed.

Namespace:  System.Windows.Automation.Peers
Assembly:  PresentationCore (in PresentationCore.dll)
public void InvalidatePeer()
You cannot use methods in XAML.

Examples of main properties include, but are not limited to, LogicalChildren and BoundingRectangle.

Typically, updates and notifications happen automatically after the update of the layout in Windows Presentation Foundation (WPF). (The update occurs in response to the LayoutUpdated event.) Sometimes, however, properties change without raising the LayoutUpdated event. For example, when the whole Window moves, the LayoutUpdated event is not raised. In this example, the set of BoundingRectangle objects change because the objects are expressed in screen coordinates. Therefore, the Window must call InvalidatePeer on its peer on WindowAutomationPeer.

Windows 7, Windows Vista, Windows XP SP2, Windows Server 2008 R2, Windows Server 2008, Windows Server 2003

The .NET Framework and .NET Compact Framework do not support all versions of every platform. For a list of the supported versions, see .NET Framework System Requirements.

.NET Framework

Supported in: 3.5, 3.0
Did you find this helpful?
(1500 characters remaining)
Thank you for your feedback

Community Additions

ADD
Show:
© 2014 Microsoft. All rights reserved.