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Queue Constructor (Int32)

Initializes a new instance of the Queue class that is empty, has the specified initial capacity, and uses the default growth factor.

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

public:
Queue(
	int capacity
)

Parameters

capacity
Type: System::Int32

The initial number of elements that the Queue can contain.

ExceptionCondition
ArgumentOutOfRangeException

capacity is less than zero.

The capacity of a Queue is the number of elements the Queue can hold. As elements are added to a Queue, the capacity is automatically increased as required through reallocation. The capacity can be decreased by calling TrimToSize.

The growth factor is the number by which the current capacity is multiplied when a greater capacity is required. The growth factor is determined when the Queue is constructed.

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 Queue.

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

.NET Framework

Supported in: 4.6, 4.5, 4, 3.5, 3.0, 2.0, 1.1, 1.0

.NET Framework Client Profile

Supported in: 4, 3.5 SP1

Windows 8.1, Windows Server 2012 R2, Windows 8, Windows Server 2012, Windows 7, Windows Vista SP2, Windows Server 2008 (Server Core Role not supported), Windows Server 2008 R2 (Server Core Role supported with SP1 or later; Itanium not supported)

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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