Lookup<TKey,TElement>.Item[TKey] Property
Definition
Important
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Gets the collection of values indexed by the specified key.
public:
property System::Collections::Generic::IEnumerable<TElement> ^ default[TKey] { System::Collections::Generic::IEnumerable<TElement> ^ get(TKey key); };public System.Collections.Generic.IEnumerable<TElement> this[TKey key] { get; }member this.Item('Key) : seq<'Element>Default Public ReadOnly Property Item(key As TKey) As IEnumerable(Of TElement)Parameters
- key
- TKey
The key of the desired collection of values.
Property Value
The collection of values indexed by the specified key.
Implements
Examples
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'];
' Select a collection of Packages by indexing directly into the Lookup.
Dim cgroup As System.Collections.Generic.IEnumerable(Of String) = lookup("C"c)
Remarks
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 the key is not found in the collection, an empty sequence is returned.
