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interface System.​Linq.​ILookup<​TKey, TElement>

Assembly: System.Linq

Implemented Interfaces

Defines an indexer, size property, and Boolean search method for data structures that map keys to <see cref="T:System.Collections.Generic.IEnumerable`1" /> sequences of values.

Properties

int
Count
Gets the number of key/value collection pairs in the <see cref="T:System.Linq.ILookup`2" /> .
Item

Methods

bool
Contains​(TKey key)
Determines whether a specified key exists in the <see cref="T:System.Linq.ILookup`2" /> .
Returns <see langword="true" /> if <paramref name="key" /> is in the <see cref="T:System.Linq.ILookup`2" /> ; otherwise, <see langword="false" /> .
key The key to search for in the <see cref="T:System.Linq.ILookup`2" /> .