ICollection(T).IsReadOnly Property

Collection<'T>.ICollection<'T>.IsReadOnly Property

 

Gets a value indicating whether the ICollection<'T> is read-only.

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

private abstract IsReadOnly : bool with get
private override IsReadOnly : bool with 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.

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.

Universal Windows Platform
Available since 8
.NET Framework
Available since 2.0
Portable Class Library
Supported in: portable .NET platforms
Silverlight
Available since 2.0
Windows Phone Silverlight
Available since 7.0
Windows Phone
Available since 8.1
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