Occurs when the value of the System.Windows.Forms.BindingContext property changes.
To add a new System.Windows.Forms.BindingContext to the System.Windows.Forms.Control through the Control.BindingContext property, see the BindingContext.#ctor constructor.
This event is raised if the Control.BindingContext property is changed is changed by either a programmatic modification or user interaction.
For more information about handling events, see Consuming Events.