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Array.IsReadOnly Property

  • Reference

Definition

Namespace:
System
Assembly:
System.Runtime.dll
Assembly:
mscorlib.dll
Assembly:
netstandard.dll
Source:
Array.cs
Source:
Array.cs
Source:
Array.cs

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

public:
 property bool IsReadOnly { bool get(); };
public:
 virtual property bool IsReadOnly { bool get(); };
public bool IsReadOnly { get; }
public virtual bool IsReadOnly { get; }
member this.IsReadOnly : bool
Public ReadOnly Property IsReadOnly As Boolean
Public Overridable ReadOnly Property IsReadOnly As Boolean

Property Value

Boolean

This property is always false for all arrays.

Implements

IsReadOnly

Remarks

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.

Applies to

See also