CollectionBase.IList.IsFixedSize Property


Gets a value indicating whether the CollectionBase 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

Property Value


true if the CollectionBase has a fixed size; otherwise, false. The default is false.


<xref href="System.Collections.IList.IsFixedSize?alt=System.Collections.IList.IsFixedSize&text=IsFixedSize" data-throw-if-not-resolved="True"/>


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.

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.

Retrieving the value of this property is an O(1) operation.

Applies to