Occurs when the state of the navigational user interface (UI) needs to be refreshed to reflect the current state of the underlying data.
The BindingNavigator.RefreshItems event signals that the navigational UI of the System.Windows.Forms.BindingNavigator needs to be updated to reflect the current state of the associated System.Windows.Forms.BindingSource.
This is the default event for the System.Windows.Forms.BindingNavigator class.