Expander.Expanded Event


Occurs when the content window of an Expander control opens to display both its header and content.

Namespace:   System.Windows.Controls
Assembly:  PresentationFramework (in PresentationFramework.dll)

Public Event Expanded As RoutedEventHandler

The Expanded event occurs when the IsExpanded property changes from false to true.

Identifier field


Routing strategy




The following example shows how to specify the event handler for the Expanded event.

AddHandler yourExpander.Expanded, AddressOf expanderHasExpanded
<Expander Name ="yourExpander" Expanded="expanderHasExpanded" 
          Header ="expanderTitle" Content="expanderContent"/>

The following example shows how to define the event handler.

Private Sub expanderHasExpanded(ByVal sender As Object, ByVal args As RoutedEventArgs)
	'Do something when the Expander control expands
End Sub

.NET Framework
Available since 3.0
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