PresentationFrameworkCollection<T>.IsReadOnly Property

Microsoft Silverlight will reach end of support after October 2021. Learn more.

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

Namespace:  System.Windows
Assembly:  System.Windows (in System.Windows.dll)


Public ReadOnly Property IsReadOnly As Boolean
public bool IsReadOnly { get; }

Property Value

Type: System.Boolean
true if the PresentationFrameworkCollection<T> is read-only; otherwise, false.




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

Note that such a read-only collection is inherently incompatible with XAML. IsReadOnly reports a different concept than whether the property that holds the collection is read-only.

Version Information


Supported in: 5, 4, 3

Silverlight for Windows Phone

Supported in: Windows Phone OS 7.1, Windows Phone OS 7.0


For a list of the operating systems and browsers that are supported by Silverlight, see Supported Operating Systems and Browsers.