CollectionBase.Capacity Property

Definition

获取或设置 CollectionBase 可包含的元素数。Gets or sets the number of elements that the CollectionBase can contain.

public:
 property int Capacity { int get(); void set(int value); };
public int Capacity { get; set; }
[System.Runtime.InteropServices.ComVisible(false)]
public int Capacity { get; set; }
member this.Capacity : int with get, set
Public Property Capacity As Integer

Property Value

Int32

CollectionBase 可包含的元素数。The number of elements that the CollectionBase can contain.

Attributes

Exceptions

Capacity 已设置为一个小于 Count 的值。Capacity is set to a value that is less than Count.

系统上没有足够的可用内存。There is not enough memory available on the system.

Remarks

CapacityCollectionBase 可存储的元素数。Capacity is the number of elements that the CollectionBase can store. Count 是实际处于 CollectionBase中的元素的数目。Count is the number of elements that are actually in the CollectionBase.

Capacity 始终大于或等于 CountCapacity is always greater than or equal to Count. 如果在添加元素时 Count 超过 Capacity,则在复制旧元素并添加新元素之前,重新分配内部数组,将自动增加容量。If Count exceeds Capacity while adding elements, the capacity is automatically increased by reallocating the internal array before copying the old elements and adding the new elements.

可以通过显式设置 Capacity 属性来减少容量。The capacity can be decreased by setting the Capacity property explicitly. 如果显式设置了 Capacity 的值,则还将重新分配内部数组以容纳指定的容量。When the value of Capacity is set explicitly, the internal array is also reallocated to accommodate the specified capacity.

检索此属性的值是一个 O(1) 操作;设置属性是一个 O(n) 操作,其中 n 是新容量。Retrieving the value of this property is an O(1) operation; setting the property is an O(n) operation, where n is the new capacity.

Applies to

See also