Lookup(Of TKey, TElement).Item Property (TKey)

 

Gets the collection of values indexed by the specified key.

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

Public ReadOnly Property Item (
	key As TKey
) As IEnumerable(Of TElement)

Parameters

key
Type: TKey

The key of the desired collection of values.

Property Value

Type: System.Collections.Generic.IEnumerable(Of TElement)

The collection of values indexed by the specified key.

This indexed property provides the ability to index a specific collection of values in the Lookup(Of TKey, TElement) by using the following syntax: myLookup[key] in Visual C# or myLookup(key) in Visual Basic. If the 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(Of TKey, TElement). This code example is part of a larger example provided for the Lookup(Of TKey, TElement) class.

' Select a collection of Packages by indexing directly into the Lookup.
Dim cgroup As System.Collections.Generic.IEnumerable(Of String) = lookup("C"c)

Universal Windows Platform
Available since 8
.NET Framework
Available since 3.5
Portable Class Library
Supported in: portable .NET platforms
Silverlight
Available since 2.0
Windows Phone Silverlight
Available since 7.0
Windows Phone
Available since 8.1
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