KeyedCollection<TKey, TItem>.ClearItems Method
Microsoft Silverlight will reach end of support after October 2021. Learn more.
Removes all elements from the KeyedCollection<TKey, TItem>.
Namespace: System.Collections.ObjectModel
Assembly: mscorlib (in mscorlib.dll)
Syntax
'Declaration
Protected Overrides Sub ClearItems
protected override void ClearItems()
Remarks
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<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<T> generic class.
Call the base class implementation of this method to clear the underlying collection and to clear the lookup dictionary.
Version Information
Silverlight
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
Platforms
For a list of the operating systems and browsers that are supported by Silverlight, see Supported Operating Systems and Browsers.