Array::IsReadOnly Property

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

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

public:
virtual property bool IsReadOnly {
	bool get () sealed;
}

Property Value

Type: System::Boolean
This property is always false for all arrays.

Implements

IList::IsReadOnly

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

Supported in: 4.6, 4.5, 4, 3.5, 3.0, 2.0, 1.1

.NET Framework Client Profile

Supported in: 4, 3.5 SP1

XNA Framework

Supported in: 3.0, 2.0, 1.0

Supported in: Windows Phone 8.1

Supported in: Windows Phone Silverlight 8.1

Supported in: Windows Phone Silverlight 8
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