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Dictionary(TKey, TValue).IDictionary.Keys Property

Gets an ICollection containing the keys of the IDictionary.

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

private abstract Keys : ICollection
private override Keys : ICollection

Property Value

Type: System.Collections.ICollection
An ICollection containing the keys of the IDictionary.

Implements

IDictionary.Keys

The order of the keys in the returned ICollection is unspecified, but it is guaranteed to be the same order as the corresponding values in the ICollection returned by the Values property.

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

The following code example shows how to use the IDictionary.Keys property of the System.Collections.IDictionary interface with a Dictionary(TKey, TValue), to list the keys in the dictionary. The example also shows how to enumerate the key/value pairs in the dictionary; note that the enumerator for the System.Collections.IDictionary interface returns DictionaryEntry objects rather than KeyValuePair(TKey, TValue) objects.

The code example is part of a larger example, including output, provided for the IDictionary.Add method.

No code example is currently available or this language may not be supported.

.NET Framework

Supported in: 4, 3.5, 3.0, 2.0

.NET Framework Client Profile

Supported in: 4, 3.5 SP1

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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