KeyedCollection(Of TKey, TItem).ClearItems Method

Removes all elements from the KeyedCollection(Of TKey, TItem).

Namespace:  System.Collections.ObjectModel
Assembly:  mscorlib (in mscorlib.dll)

Protected Overrides Sub ClearItems

If there is a lookup dictionary, this method clears it but does not delete it.

If the number of elements has exceeded the dictionary creation threshold and the KeyedCollection(Of TKey, TItem) is using a lookup dictionary, it will continue to use a lookup dictionary even though the number of elements is again under the threshold.

This method is an O(n) operation, where n is Count.

Notes for Implementers

Override this method to provide customized behavior for the Clear method, inherited from the Collection(Of T) generic class.

Call the base class implementation of this method to clear the underlying collection and to clear the lookup dictionary.


Supported in: 5, 4, 3

Silverlight for Windows Phone

Supported in: Windows Phone OS 7.1, Windows Phone OS 7.0

XNA Framework

Supported in: Xbox 360, Windows Phone OS 7.0

For a list of the operating systems and browsers that are supported by Silverlight, see Supported Operating Systems and Browsers.

Community Additions