property ChartView.AllowSelectNothing as Boolean
Specifies whether the user can select nothing if he clicks out of any node.

TypeDescription
Boolean A Boolean expression that specifies whether the user can select nothing if the user clicks outside of the node.
By default, the AllowSelectNothing property is False. The AllowSelectNothing property allows selecting nothing if the user clicks outside the node. Use the SelectNode property to specify the selected node.