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Lookup<TKey, TElement>.Item Property

Gets the collection of values indexed by the specified key.

Namespace:  System.Linq
Assembly:  System.Core (in System.Core.dll)

public IEnumerable<TElement> this[
	TKey key
] { get; }

Parameters

key
Type: TKey
The key of the desired collection of values.

Property Value

Type: System.Collections.Generic.IEnumerable<TElement>
The collection of values indexed by the specified key.

Implements

ILookup<TKey, TElement>.Item[TKey]

This indexed property provides the ability to index a specific collection of values in the Lookup<TKey, TElement> by using the following syntax: myLookup[key] in Visual C# or myLookup(key) in Visual Basic. If key is not found in the collection, an empty sequence is returned.

The following example demonstrates how to use Item to index directly into a Lookup<TKey, TElement>. This code example is part of a larger example provided for the Lookup<TKey, TElement> class.


// Select a collection of Packages by indexing directly into the Lookup.
IEnumerable<string> cgroup = lookup['C'];


Silverlight

Supported in: 5, 4, 3

Silverlight for Windows Phone

Supported in: Windows Phone OS 7.1, Windows Phone OS 7.0

XNA Framework

Supported in: Xbox 360, Windows Phone OS 7.0

For a list of the operating systems and browsers that are supported by Silverlight, see Supported Operating Systems and Browsers.

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