Windows apps
Collapse the table of content
Expand the table of content
The topic you requested is included in another documentation set. For convenience, it's displayed below. Choose Switch to see the topic in its original location.

ICollection<T>.IsReadOnly Property


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

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

bool IsReadOnly { get; }

Property Value

Type: System.Boolean

true if the ICollection<T> is read-only; otherwise, false.

A collection that is read-only does not allow the addition or removal of elements after the collection is created. Note that read-only in this context does not indicate whether individual elements of the collection can be modified, since the ICollection<T> interface only supports addition and removal operations. For example, the IsReadOnly property of an array that is cast or converted to an ICollection<T> object returns true, even though individual array elements can be modified.

Universal Windows Platform
Available since 8
.NET Framework
Available since 2.0
Portable Class Library
Supported in: portable .NET platforms
Available since 2.0
Windows Phone Silverlight
Available since 7.0
Windows Phone
Available since 8.1
Return to top
© 2016 Microsoft