ICollection<T>::IsReadOnly Property
Gets a value indicating whether the ICollection<T> is read-only.
Assembly: mscorlib (in mscorlib.dll)
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.
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