ListView.OnItemCanceling Method (ListViewCancelEventArgs)
Raises the ItemCanceling event.
Assembly: System.Web.Extensions (in System.Web.Extensions.dll)
The ListView control raises the ItemCanceling event when a Cancel button in the control is clicked, but before exiting insert or edit mode. (A Cancel button is a button control whose CommandName property is set to "Cancel".) This enables you to perform a custom routine whenever this event occurs, such as stopping the cancel operation if it would put the item in an unwanted state.
Raising an event invokes the event handler through a delegate. For more information, see NIB: Raising an Event.
Themethod also enables derived classes to handle the event without attaching a delegate. This is the preferred technique for handling the event in a derived class.
Notes to Inheritors:
When you overridein a derived class, call the base class's method so that registered delegates receive the event.
Available since 3.5