ICollection(T).IsReadOnly Property

Collection<T>.ICollection<T>.IsReadOnly Property

[ This article is for Windows Phone 8 developers. If you’re developing for Windows 10, see the latest documentation. ]

Gets a value indicating whether the ICollection<T> is read-only.

Namespace:  System.Collections.ObjectModel
Assembly:  mscorlib (in mscorlib.dll)

bool ICollection<T>.IsReadOnly { get; }

Property Value

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

Implements

ICollection<T>.IsReadOnly

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.

Windows Phone OS

Supported in: 8.1, 8.0, 7.1, 7.0

Windows Phone

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