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ArrayList.TrimToSize Method

Sets the capacity to the actual number of elements in the ArrayList.

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

abstract TrimToSize : unit -> unit 
override TrimToSize : unit -> unit 

ExceptionCondition
NotSupportedException

The ArrayList is read-only.

-or-

The ArrayList has a fixed size.

This method can be used to minimize a collection's memory overhead if no new elements will be added to the collection.

To reset a ArrayList to its initial state, call the Clear method before calling TrimToSize. Trimming an empty ArrayList sets the capacity of the ArrayList to the default capacity.

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

The following code example shows how to trim the unused portions of the ArrayList and how to clear the values of the ArrayList.

No code example is currently available or this language may not be supported.

.NET Framework

Supported in: 4, 3.5, 3.0, 2.0, 1.1, 1.0

.NET Framework Client Profile

Supported in: 4, 3.5 SP1

Windows 7, Windows Vista SP1 or later, Windows XP SP3, Windows XP SP2 x64 Edition, Windows Server 2008 (Server Core not supported), Windows Server 2008 R2 (Server Core supported with SP1 or later), Windows Server 2003 SP2

The .NET Framework does not support all versions of every platform. For a list of the supported versions, see .NET Framework System Requirements.

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