Gets a value indicating whether the Array is read-only.
Assembly: mscorlib (in mscorlib.dll)
Array implements the property because it is required by the System.Collections::IList interface. An array that is read-only does not allow the addition, removal, or modification of elements after the array is created.
If you cast or convert an array to an IList interface object, the IList::IsReadOnly property returns false. However, if you cast or convert an array to a IList<T> interface, the IsReadOnly property returns true.
Retrieving the value of this property is an O(1) operation.
Windows Phone 8.1, Windows Phone 8, Windows 8.1, Windows Server 2012 R2, Windows 8, Windows Server 2012, Windows 7, Windows Vista SP2, Windows Server 2008 (Server Core Role not supported), Windows Server 2008 R2 (Server Core Role supported with SP1 or later; Itanium not supported)
The .NET Framework does not support all versions of every platform. For a list of the supported versions, see .NET Framework System Requirements.