ConcurrentDictionary<TKey,TValue>.TryGetValue(TKey, TValue) Metodo

Definizione

Spazio dei nomi:: System.Collections.Concurrent

Assembly:: System.Collections.Concurrent.dll, mscorlib.dll, netstandard.dll

Tenta di ottenere il valore associato alla chiave specificata da ConcurrentDictionary<TKey,TValue>.Attempts to get the value associated with the specified key from the ConcurrentDictionary<TKey,TValue>.

public:
 virtual bool TryGetValue(TKey key, [Runtime::InteropServices::Out] TValue % value);

public bool TryGetValue (TKey key, out TValue value);

abstract member TryGetValue : 'Key * 'Value -> bool
override this.TryGetValue : 'Key * 'Value -> bool

Public Function TryGetValue (key As TKey, ByRef value As TValue) As Boolean

Parametri

key: TKey

Chiave del valore da ottenere.The key of the value to get.

value: TValue

Quando questo metodo termina, contiene l'oggetto da ConcurrentDictionary<TKey,TValue> con la chiave specificata o il valore predefinito del tipo, se l'operazione ha esito negativo.When this method returns, contains the object from the ConcurrentDictionary<TKey,TValue> that has the specified key, or the default value of the type if the operation failed.

Restituisce

Boolean

true se la chiave viene trovata in ConcurrentDictionary<TKey,TValue>. In caso contrario, false.true if the key was found in the ConcurrentDictionary<TKey,TValue>; otherwise, false.

Implementazioni

TryGetValue(TKey, TValue) TryGetValue(TKey, TValue)

Eccezioni

ArgumentNullException

key è null.key is null.