AutomationEventArgs.EventId Property
Definition
Important
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Gets the event identifier.
public:
property System::Windows::Automation::AutomationEvent ^ EventId { System::Windows::Automation::AutomationEvent ^ get(); };
public System.Windows.Automation.AutomationEvent EventId { get; }
member this.EventId : System.Windows.Automation.AutomationEvent
Public ReadOnly Property EventId As AutomationEvent
Property Value
The event identifier.
Examples
In the following example, the event handler checks the EventId of the event and handles the event accordingly.
/// <summary>
/// AutomationEventHandler delegate.
/// </summary>
/// <param name="src">Object that raised the event.</param>
/// <param name="e">Event arguments.</param>
private void OnUIAutomationEvent(object src, AutomationEventArgs e)
{
// Make sure the element still exists. Elements such as tooltips
// can disappear before the event is processed.
AutomationElement sourceElement;
try
{
sourceElement = src as AutomationElement;
}
catch (ElementNotAvailableException)
{
return;
}
if (e.EventId == InvokePattern.InvokedEvent)
{
// TODO Add handling code.
}
else
{
// TODO Handle any other events that have been subscribed to.
}
}
''' <summary>
''' AutomationEventHandler delegate.
''' </summary>
''' <param name="src">Object that raised the event.</param>
''' <param name="e">Event arguments.</param>
Private Sub OnUIAutomationEvent(ByVal src As Object, ByVal e As AutomationEventArgs)
' Make sure the element still exists. Elements such as tooltips can disappear
' before the event is processed.
Dim sourceElement As AutomationElement
Try
sourceElement = DirectCast(src, AutomationElement)
Catch ex As ElementNotAvailableException
Exit Sub
End Try
If e.EventId Is InvokePattern.InvokedEvent Then
' TODO Add handling code.
Else
End If
' TODO Handle any other events that have been subscribed to.
Console.WriteLine("Event: " & e.EventId.ProgrammaticName)
End Sub
Remarks
If a client has added event handlers for more than one event using the same AutomationEventHandler instance, EventId can be used to identify the event that the delegate should process.
Applies to
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