Collection<T>.IList.IsReadOnly Property

Definition

Namespace:: System.Collections.ObjectModel

Assembly:: System.Runtime.dll

Assemblies:: mscorlib.dll, System.Runtime.dll

Assembly:: mscorlib.dll

Assembly:: netstandard.dll

Gets a value indicating whether the IList 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

Boolean

true if the IList is read-only; otherwise, false. In the default implementation of Collection<T>, this property always returns false.

Implements

IsReadOnly

Remarks

A collection that is read-only does not allow the addition, removal, or modification of elements after the collection is created.

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.

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

Applies to