System 2.0.0.0 4.0.0.0 The interface is used to notify clients, typically binding clients, that a property value has changed. For example, consider a Person object with a property called FirstName. To provide generic property-change notification, the Person type implements the interface and raises a event when FirstName is changed. For change notification to occur in a binding between a bound client and a data source, your bound type should either: Implement the interface (preferred). Provide a change event for each property of the bound type. Do not do both.

Notifies clients that a property value has changed.

Event 2.0.0.0 4.0.0.0 System.ComponentModel.PropertyChangedEventHandler The event can indicate all properties on the object have changed by using either null or as the property name in the .

Occurs when a property value changes.