Base. On Clear Method
Some information relates to prerelease product that may be substantially modified before it’s released. Microsoft makes no warranties, express or implied, with respect to the information provided here.
Performs additional custom processes when clearing the contents of the CollectionBase instance.
virtual void OnClear();
protected virtual void OnClear ();
abstract member OnClear : unit -> unit
override this.OnClear : unit -> unit
Protected Overridable Sub OnClear ()
The default implementation of this method is intended to be overridden by a derived class to perform some action before the collection is cleared.
If the process fails, the collection reverts back to its previous state.
The default implementation of this method is an
Notes to Inheritors
This method allows implementers to define processes that must be performed before deleting all the elements from the underlying ArrayList. By defining this method, implementers can add functionality to inherited methods without having to override all other methods.
For example, implementers can exempt certain elements from deletion by a global Clear.