As I said, the navigator is connected to a BindingSource (BindingSource property), then various buttons on the navigator is assigned particular actions (like the move next), when these buttons are clicked the corresponding action method on the BS is called. There is no client code necessary to do this in a default configuration. Have a look at the members of BindingSource class and you'll see it's obvious how they all map to the various navigator actions, you can also see this map in help for BindingNavigator Class (System.Windows.Forms)

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