Dictionary<TKey,TValue>.IDictionary.IsFixedSize Dictionary<TKey,TValue>.IDictionary.IsFixedSize Dictionary<TKey,TValue>.IDictionary.IsFixedSize Property

定義

取得值,指出 IDictionary 是否有固定的大小。Gets a value that indicates whether the IDictionary has a fixed size.

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

屬性值

如果 true 有固定大小,則為 IDictionary,否則為 falsetrue if the IDictionary has a fixed size; otherwise, false. Dictionary<TKey,TValue> 的預設實作中,這個屬性永遠會傳回 falseIn the default implementation of Dictionary<TKey,TValue>, this property always returns false.

實作

備註

具有固定大小的集合不允許在集合建立後新增或移除項目,但允許對現有項目進行修改。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只是具有包裝函式的集合,可防止新增和移除專案;因此,如果對基礎集合進行了變更,包括新增或移除元素,則固定大小集合會反映這些變更。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.

取得這個屬性的值是 O (1)運算。Getting the value of this property is an O(1) operation.

適用於