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TrimExcess Method

Queue.TrimExcess Method

Sets the capacity to the actual number of elements in the Queue, if that number is less than 90 percent of current capacity.

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

public void TrimExcess ()
public void TrimExcess ()
public function TrimExcess ()
Not applicable.

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 Queue 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 Queue to its initial state, call the Clear method before calling TrimExcess method. Trimming an empty Queue sets the capacity of the Queue to the default capacity.

Windows 98, Windows Server 2000 SP4, Windows CE, Windows Millennium Edition, Windows Mobile for Pocket PC, Windows Mobile for Smartphone, Windows Server 2003, Windows XP Media Center Edition, Windows XP Professional x64 Edition, Windows XP SP2, Windows XP Starter Edition

The Microsoft .NET Framework 3.0 is supported on Windows Vista, Microsoft Windows XP SP2, and Windows Server 2003 SP1.

.NET Framework

Supported in: 3.0, 2.0

.NET Compact Framework

Supported in: 2.0

XNA Framework

Supported in: 1.0

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