Dictionary(TKey, TValue).ValueCollection Class (System.Collections.Generic)

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Microsoft Visual Studio 2008/.NET Framework 3.5

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.NET Framework Class Library

Dictionary<(Of <(TKey, TValue>)>)..::.ValueCollection Class

Updated: November 2007

Represents the collection of values in a Dictionary<(Of <(TKey, TValue>)>). This class cannot be inherited.

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

Syntax

Visual Basic (Declaration)

<SerializableAttribute> _
Public NotInheritable Class ValueCollection _
    Implements ICollection(Of TValue), IEnumerable(Of TValue),  _
    ICollection, IEnumerable

Visual Basic (Usage)

Dim instance As Dictionary.ValueCollection

[SerializableAttribute]
public sealed class ValueCollection : ICollection<TValue>, 
    IEnumerable<TValue>, ICollection, IEnumerable

Visual C++

[SerializableAttribute]
public ref class ValueCollection sealed : ICollection<TValue>, 
    IEnumerable<TValue>, ICollection, IEnumerable

/** @attribute SerializableAttribute */ 
public final class ValueCollection implements ICollection<TValue>, 
    IEnumerable<TValue>, ICollection, IEnumerable

JScript

public final class ValueCollection implements ICollection<TValue>, IEnumerable<TValue>, ICollection, IEnumerable

Remarks

The Dictionary<(Of <(TKey, TValue>)>)..::.Values property returns an instance of this type, containing all the values in that Dictionary<(Of <(TKey, TValue>)>). The order of the values in the Dictionary<(Of <(TKey, TValue>)>)..::.ValueCollection is unspecified, but it is the same order as the associated keys in the Dictionary<(Of <(TKey, TValue>)>)..::.KeyCollection returned by the Dictionary<(Of <(TKey, TValue>)>)..::.Keys property.

The Dictionary<(Of <(TKey, TValue>)>)..::.ValueCollection is not a static copy; instead, the Dictionary<(Of <(TKey, TValue>)>)..::.ValueCollection refers back to the values in the original Dictionary<(Of <(TKey, TValue>)>). Therefore, changes to the Dictionary<(Of <(TKey, TValue>)>) continue to be reflected in the Dictionary<(Of <(TKey, TValue>)>)..::.ValueCollection.

Inheritance Hierarchy

System..::.Object
System.Collections.Generic..::.Dictionary<(Of <(TKey, TValue>)>)..::.ValueCollection

Thread Safety

Public static (Shared in Visual Basic) members of this type are thread safe. Any instance members are not guaranteed to be thread safe.

A Dictionary<(Of <(TKey, TValue>)>)..::.ValueCollection can support multiple readers concurrently, as long as the collection is not modified. Even so, enumerating through a collection is intrinsically not a thread-safe procedure. To guarantee thread safety during enumeration, you can lock the collection during the entire enumeration. To allow the collection to be accessed by multiple threads for reading and writing, you must implement your own synchronization.

Platforms

Windows Vista, Windows XP SP2, Windows XP Media Center Edition, Windows XP Professional x64 Edition, Windows XP Starter Edition, Windows Server 2003, Windows Server 2000 SP4, Windows Millennium Edition, Windows 98, Windows CE, Windows Mobile for Smartphone, Windows Mobile for Pocket PC, Xbox 360

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

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