List<T>.IList.IsFixedSize 属性

定义

命名空间:
System.Collections.Generic
程序集:
System.Collections.dll
程序集:
mscorlib.dll, System.Collections.dll
程序集:
mscorlib.dll, netstandard.dll
程序集:
mscorlib.dll
程序集:
netstandard.dll

获取一个值，该值指示 IList 是否具有固定大小。Gets a value indicating whether the IList has a fixed size.

property bool System::Collections::IList::IsFixedSize { bool get(); };
bool System.Collections.IList.IsFixedSize { get; }
member this.System.Collections.IList.IsFixedSize : bool
 ReadOnly Property IsFixedSize As Boolean Implements IList.IsFixedSize

属性值

Boolean

如果 true 具有固定大小，则为 IList；否则为 false。true if the IList has a fixed size; otherwise, false. 在 List<T> 的默认实现中，此属性始终返回 false。In the default implementation of List<T>, this property always returns false.

实现

IsFixedSize

注解

具有固定大小的集合在创建之后不能再添加或移除元素，但是允许修改现有元素。A collection with a fixed size does not allow the addition or removal of elements after the collection is created, but it allows the modification of existing elements.

具有固定大小的集合就是一个集合，其中包含阻止添加和移除元素的包装;因此，如果对基础集合进行了更改，包括添加或删除元素，则固定大小的集合将反映这些更改。A collection with a fixed size is simply a collection with a wrapper that prevents adding and removing elements; therefore, if changes are made to the underlying collection, including the addition or removal of elements, the fixed-size collection reflects those changes.

检索此属性的值的运算复杂度为 O(1)。Retrieving the value of this property is an O(1) operation.

适用于