AutomationEvent Class
This API supports the .NET Framework infrastructure and is not intended to be used directly from your code.
[ This article is for Windows Phone 8 developers. If you’re developing for Windows 10, see the latest documentation. ]
Represents an Automation event.
Assembly: System.Windows (in System.Windows.dll)
The AutomationEvent type exposes the following members.
| Name | Description | |
|---|---|---|
![]() | AddEventHandler | Attaches the specified delegate to the Automation event. |
![]() | Equals(Object) | Determines whether the specified Object is equal to the current Object. (Inherited from Object.) |
![]() | Finalize | Allows an object to try to free resources and perform other cleanup operations before the Object is reclaimed by garbage collection. (Inherited from Object.) |
![]() | GetHashCode | Serves as a hash function for a particular type. (Inherited from Object.) |
![]() | GetType | Gets the Type of the current instance. (Inherited from Object.) |
![]() | MemberwiseClone | Creates a shallow copy of the current Object. (Inherited from Object.) |
![]() | RemoveEventHandler | Detaches the specified delegate from the Automation event. |
![]() | ToString | Returns a string that represents the current object. (Inherited from Object.) |
The following code example demonstrates how to handle Automation events.
Private Sub SearchEmail() UpdateStatusMessage("Searching Inbox for 'WindowsPhone'...") ' The following code demonstrates three ways to handle Automation ' events. In Visual Basic, all three ways use the AutomationEvent class. searchEvent = AutomationFactory.GetEvent(outlook, "AdvancedSearchComplete") ' The first way is demonstrated by the Handles clause of the ' SearchEvent_EventRaised method, which requires the WithEvents modifier ' on the searchEvent variable declaration. ' The second way uses the AddHandler syntax with the EventRaised event, ' and does not require the WithEvents modifier. ' AddHandler searchEvent.EventRaised, AddressOf SearchEvent_EventRaised ' The third way uses the AutomationEvent.AddEventHandler method, and ' requires the use of a delegate with an API signature that matches the ' Automation event. ' searchEvent.AddEventHandler( ' New AdvancedSearchCompleteDelegate(AddressOf SearchComplete)) ' Begin the search. outlook.AdvancedSearch("Inbox", "urn:schemas:mailheader:subject ci_phrasematch 'WindowsPhone'", True, "SubjectSearch") End Sub Private WithEvents searchEvent As AutomationEvent Sub SearchEvent_EventRaised(ByVal sender As Object, ByVal e As AutomationEventArgs) Handles searchEvent.EventRaised SearchComplete(e.Arguments(0)) End Sub ' Required only with the second two ways of handling Automation events. ' Private Delegate Sub AdvancedSearchCompleteDelegate(ByRef search As Object) ' Note: Visual Basic does not support the use of custom delegates for ' events with optional parameters. Private Sub SearchComplete(ByRef search As Object) Dim searchResults As New List(Of String) For Each result As Object In search.Results searchResults.Add(result.Subject) Next SetResultsList(searchResults) End Sub
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