Enables derived classes to provide custom handling when a WebPart control is entering or leaving edit mode.
Assembly: System.Web (in System.Web.dll)
The method in the WebPart base class contains no implementation.Notes to Inheritors
A derived control needs to override the method, and use the overridden method to raise a custom event. Developers can raise custom events or carry out other actions. The method is called when the BeginWebPartEditing and EndWebPartEditing methods are called during editing.