CollectionBase.IList.IsReadOnly Property


获取一个值,用于指示 CollectionBase 是否为只读。Gets a value indicating whether the CollectionBase is read-only.

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

Property Value


如果 true 是只读的,则为 CollectionBase;否则为 falsetrue if the CollectionBase is read-only; otherwise, false. 默认为 falseThe default is false.



在创建只读集合后,该集合不允许添加、移除或修改元素。A collection that is read-only does not allow the addition, removal, or modification of elements after the collection is created.

只读集合就是一个集合,其中包含阻止修改集合的包装器;因此,如果对基础集合进行了更改,只读集合将反映这些更改。A collection that is read-only is simply a collection with a wrapper that prevents modifying the collection; therefore, if changes are made to the underlying collection, the read-only collection reflects those changes.

检索此属性的值是一个 O(1) 操作。Retrieving the value of this property is an O(1) operation.

Applies to