Performs additional custom processes before clearing the contents of the DictionaryBase instance.
Assembly: mscorlib (in mscorlib.dll)
The default implementation of this method is intended to be overridden by a derived class to perform some action before the collection is cleared.
The default implementation of this method is an O(1) operation.Notes to Implementers:
This method allows implementers to define processes that must be performed before deleting all the elements from the underlying System.Collections.Hashtable. By defining this method, implementers can add functionality to inherited methods without having to override all other methods.
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.
Windows 7, Windows Vista, Windows XP SP2, Windows XP Media Center Edition, Windows XP Professional x64 Edition, Windows XP Starter Edition, Windows Server 2008 R2, Windows Server 2008, Windows Server 2003, Windows Server 2000 SP4, Windows Millennium Edition, Windows 98
The .NET Framework and .NET Compact Framework do not support all versions of every platform. For a list of the supported versions, see .NET Framework System Requirements.