When overridden in a derived class, gets or sets the position in the underlying list that controls bound to this data source point to.
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Use the BindingManagerBase.Position property to iterate through the underlying list maintained by the System.Windows.Forms.BindingManagerBase. To go to the first item, set the BindingManagerBase.Position to 0. To go to the end of the list, set the BindingManagerBase.Position to the value of the BindingManagerBase.Count property minus 1.
The BindingManagerBase.PositionChanged event occurs when the BindingManagerBase.Position property value changes.