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AutomationPropertyChangedEventHandler Delegate

Represents the method implemented by the UI Automation client application to handle the event raised by a UI Automation provider when a property has changed.

Namespace:  System.Windows.Automation
Assembly:  UIAutomationTypes (in UIAutomationTypes.dll)

public delegate void AutomationPropertyChangedEventHandler(
	Object^ sender, 
	AutomationPropertyChangedEventArgs^ e
)

Parameters

sender
Type: System::Object
The object that raised the event.
e
Type: System.Windows.Automation::AutomationPropertyChangedEventArgs
Information about the event.

The AutomationElement represented by sender might not have any cached properties or patterns, depending on whether the application subscribed to this event while a CacheRequest was active.

Depending on the provider implementation, a property-changed event does not necessarily signify that the property value is different; it might just mean that the property was set, even to the same value. If your application needs to respond only to actual changes, it is your responsibility to track the state of the property.

In the following example, changes in the IsEnabled property of subscribed elements are handled.

No code example is currently available or this language may not be supported.

.NET Framework

Supported in: 4, 3.5, 3.0

.NET Framework Client Profile

Supported in: 4, 3.5 SP1

Windows 7, Windows Vista SP1 or later, Windows XP SP3, Windows Server 2008 (Server Core not supported), Windows Server 2008 R2 (Server Core supported with SP1 or later), Windows Server 2003 SP2

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