Array::IsReadOnly Property


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Gets a value indicating whether the Array is read-only.

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

property bool IsReadOnly {
	virtual bool get() sealed;

Property Value

Type: System::Boolean

This property is always false for all arrays.

Array implements the IsReadOnly 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 require a read-only collection, use a System.Collections class that implements the System.Collections::IList interface.

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.

.NET Framework
Available since 1.1
Available since 2.0
Windows Phone Silverlight
Available since 7.0
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