Stack<T>.TrimExcess Method ()


The .NET API Reference documentation has a new home. Visit the .NET API Browser on to see the new experience.

Sets the capacity to the actual number of elements in the Stack<T>, if that number is less than 90 percent of current capacity.

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

public void TrimExcess()

This method can be used to minimize a collection's memory overhead if no new elements will be added to the collection. The cost of reallocating and copying a large Stack<T> can be considerable, however, so the TrimExcess method does nothing if the list is at more than 90 percent of capacity. This avoids incurring a large reallocation cost for a relatively small gain.

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

To reset a Stack<T> to its initial state, call the Clear method before calling TrimExcess method. Trimming an empty Stack<T> sets the capacity of the Stack<T> to the default capacity.

Universal Windows Platform
Available since 8
.NET Framework
Available since 2.0
Portable Class Library
Supported in: portable .NET platforms
Available since 2.0
Windows Phone Silverlight
Available since 7.0
Windows Phone
Available since 8.1
Return to top