public event TabFormSelectedPageChangedEventHandler SelectedPageChanged
Public Event SelectedPageChanged As TabFormSelectedPageChangedEventHandler
The SelectedPageChanged event's data class is DevExpress.XtraBars.TabFormSelectedPageChangedEventArgs.
The SelectedPageChanged event is fired when the currently selected TabFormPage (see TabFormControlBase.SelectedPage) has changed. The PrevPage and Page properties of the event arguments return the previous and new value, respectively.
You can also handle the TabFormControlBase.SelectedPageChanging event that fires when the selection is about to be changed, and allows you to cancel the action.