ArrayList Constructor (Int32)

Initializes a new instance of the ArrayList class that is empty and has the specified initial capacity.

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

public ArrayList(
	int capacity
)

Parameters

capacity
Type: System.Int32

The number of elements that the new list can initially store.

ExceptionCondition
ArgumentOutOfRangeException

capacity is less than zero.

The capacity of a ArrayList is the number of elements that the ArrayList can hold. As elements are added to a ArrayList, the capacity is automatically increased as required by reallocating the internal array.

If the size of the collection can be estimated, specifying the initial capacity eliminates the need to perform a number of resizing operations while adding elements to the ArrayList.

This constructor is an O(n) operation, where n is capacity.

Windows 7, Windows Vista, Windows XP SP2, Windows XP Media Center Edition, Windows XP Professional x64 Edition, Windows XP Starter Edition, Windows Server 2008 R2, Windows Server 2008, Windows Server 2003, Windows Server 2000 SP4, Windows Millennium Edition, Windows 98, Windows CE, Windows Mobile for Smartphone, Windows Mobile for Pocket PC, Xbox 360, Zune

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

.NET Framework

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

.NET Compact Framework

Supported in: 3.5, 2.0, 1.0

XNA Framework

Supported in: 3.0, 2.0, 1.0
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