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Occurs when the text selection has changed.
public event RoutedEventHandler SelectionChanged
User input or setting the SelectionLength or SelectionStart property raises the SelectionChanged event.
This event cannot be canceled.
If the text and the selection is changed in a TextBox, the TextChanged event is raised before the SelectionChanged event.
Supported in: 5, 4, 3
Silverlight for Windows Phone
Supported in: Windows Phone OS 7.1, Windows Phone OS 7.0