MSDN Library

DictionaryBase::IDictionary::IsReadOnly Property

Gets a value indicating whether a DictionaryBase object is read-only.

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

virtual property bool IsReadOnly {
	bool get () sealed = IDictionary::IsReadOnly::get;

Property Value

Type: System::Boolean
true if the DictionaryBase object is read-only; otherwise, false. The default is false.



A collection that is read-only does not allow the addition, removal, or modification of elements after the collection is created.

A collection that is read-only is simply a collection with a wrapper that prevents modifying the collection; therefore, if changes are made to the underlying collection, the read-only collection reflects those changes.

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
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