TrimExcess Method

HashSet(Of T).TrimExcess Method

[ This article is for Windows Phone 8 developers. If you’re developing for Windows 10, see the latest documentation. ]

Sets the capacity of a HashSet(Of T) object to the actual number of elements it contains, rounded up to a nearby, implementation-specific value.

Namespace:  System.Collections.Generic
Assembly:  System.Core (in System.Core.dll)

'Declaration
Public Sub TrimExcess

You can use the TrimExcess method to minimize a HashSet(Of T) object's memory overhead once it is known that no new elements will be added. To completely clear a HashSet(Of T) object and release all memory referenced by it, call this method after calling the Clear method.

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

Windows Phone OS

Supported in: 8.1, 8.0

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