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ICollection(KeyValuePair(TKey, TValue)).IsReadOnly Property

Dictionary<TKey, TValue>.ICollection<KeyValuePair<TKey, TValue>>.IsReadOnly Property

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

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

bool ICollection<KeyValuePair<TKey, TValue>>.IsReadOnly { get; }

Property Value

Type: System.Boolean
true if the ICollection<T> is read-only; otherwise, false. In the default implementation of Dictionary<TKey, TValue>, this property always returns false.

Implements

ICollection<T>.IsReadOnly

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.

Getting the value of this property is an O(1) operation.

.NET Framework

Supported in: 4, 3.5, 3.0, 2.0

.NET Framework Client Profile

Supported in: 4, 3.5 SP1

Portable Class Library

Supported in: Portable Class Library

Windows 7, Windows Vista SP1 or later, Windows XP SP3, Windows XP SP2 x64 Edition, Windows Server 2008 (Server Core not supported), Windows Server 2008 R2 (Server Core supported with SP1 or later), Windows Server 2003 SP2

The .NET Framework does not support all versions of every platform. For a list of the supported versions, see .NET Framework System Requirements.

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