System 2.0.0.0 4.0.0.0 The interface is used to notify clients, typically binding clients, that a property value is changing. is introduced in the .NET Framework version 3.5. For more information, see The .NET Framework 3.5 Architecture.

Notifies clients that a property value is changing.

Event 2.0.0.0 4.0.0.0 System.ComponentModel.PropertyChangingEventHandler To be added.

Occurs when a property value is changing.