ConcurrentDictionary<TKey,TValue>.TryGetAlternateLookup<TAlternateKey> Method
Definition
Important
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Gets an instance of a type that may be used to perform operations on a ConcurrentDictionary<TKey,TValue>
using a TAlternateKey as a key instead of a TKey.
public:
generic <typename TAlternateKey>
bool TryGetAlternateLookup([Runtime::InteropServices::Out] System::Collections::Concurrent::ConcurrentDictionary<TKey, TValue>::AlternateLookup<TAlternateKey> % lookup);public bool TryGetAlternateLookup<TAlternateKey> (out System.Collections.Concurrent.ConcurrentDictionary<TKey,TValue>.AlternateLookup<TAlternateKey> lookup);member this.TryGetAlternateLookup : AlternateLookup -> boolPublic Function TryGetAlternateLookup(Of TAlternateKey) (ByRef lookup As ConcurrentDictionary(Of TKey, TValue).AlternateLookup(Of TAlternateKey)) As BooleanType Parameters
- TAlternateKey
The alternate type of a key for performing lookups.
Parameters
The created lookup instance when the method returns true, or a default instance that should not be used if the method returns false.
Returns
true if a lookup could be created; otherwise, false.
Remarks
This instance must be using a comparer that implements IAlternateEqualityComparer<TAlternate,T> with TAlternateKey and TKey. If it doesn't, the method will return false.
