Occurs when the IsExpanded property changes from false to true.
Assembly: System.Windows.Controls (in System.Windows.Controls.dll)
'Declaration Public Event Expanded As RoutedEventHandler
public event RoutedEventHandler Expanded
For more information about handling events, see Events Overview for Silverlight.
Supported in: 5, 4, 3
For a list of the operating systems and browsers that are supported by Silverlight, see Supported Operating Systems and Browsers.