Performs additional custom processes when clearing the contents of the CollectionBase instance.
[Visual Basic] Protected Overridable Sub OnClear() [C#] protected virtual void OnClear(); [C++] protected: virtual void OnClear(); [JScript] protected function 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.
Notes to Implementers:
This method allows implementers to define processes that must be performed before deleting all the elements from the underlying System.Collections.ArrayList. By defining this method, implementers can add functionality to inherited methods without having to override all other methods.
OnClear is invoked before the standard Clear behavior, whereas OnClearComplete is invoked after the standard Clear behavior.
For example, implementers can exempt certain elements from deletion by a global Clear.
Platforms: Windows 98, Windows NT 4.0, Windows Millennium Edition, Windows 2000, Windows XP Home Edition, Windows XP Professional, Windows Server 2003 family, .NET Compact Framework