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

Reference

Definition

Namespace:: System.Collections.Concurrent

Assemblies:: mscorlib.dll, System.Collections.Concurrent.dll

Assemblies:: netstandard.dll, System.Collections.Concurrent.dll

Assembly:: System.Collections.Concurrent.dll

Assembly:: mscorlib.dll

Assembly:: netstandard.dll

Source:: ConcurrentDictionary.cs

Source:: ConcurrentDictionary.cs

Source:: ConcurrentDictionary.cs

Important

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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

Parameters

key: TKey

The key of the value to get.

value: TValue

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.

Returns

Boolean

true if the key was found in the ConcurrentDictionary<TKey,TValue>; otherwise, false.

Implements

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

Exceptions

ArgumentNullException

key is null.

Applies to

Производ	Верзије
.NET	Core 1.0, Core 1.1, Core 2.0, Core 2.1, Core 2.2, Core 3.0, Core 3.1, 5, 6, 7, 8, 9, 10
.NET Framework	4.0, 4.5, 4.5.1, 4.5.2, 4.6, 4.6.1, 4.6.2, 4.7, 4.7.1, 4.7.2, 4.8, 4.8.1
.NET Standard	1.1, 1.2, 1.3, 1.4, 1.6, 2.0, 2.1
UWP	10.0

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