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ConcurrentDictionary<TKey, TValue> Constructor (IEqualityComparer<TKey>)

.NET Framework 4

.NET Framework 4.5

Initializes a new instance of the ConcurrentDictionary<TKey, TValue> class that is empty, has the default concurrency level and capacity, and uses the specified IEqualityComparer<TKey>.

Namespace: System.Collections.Concurrent
Assembly: mscorlib (in mscorlib.dll)

Syntax

C++

Copy

public ConcurrentDictionary(
	IEqualityComparer<TKey> comparer
)

Parameters

comparer: Type: System.Collections.Generic.IEqualityComparer<TKey>
The IEqualityComparer<TKey> implementation to use when comparing keys.

Exceptions

Exception	Condition
ArgumentNullException	comparer is a null reference (Nothing in Visual Basic).

Version Information

.NET Framework

Supported in: 4

.NET Framework Client Profile

Supported in: 4

Platforms

Windows 7, Windows Vista SP1 or later, Windows XP SP3, Windows Server 2008 (Server Core not supported), Windows Server 2008 R2 (Server Core supported with SP1 or later), Windows Server 2003 SP2

The .NET Framework does not support all versions of every platform. For a list of the supported versions, see .NET Framework System Requirements.

Reference

ConcurrentDictionary<TKey, TValue> Class

ConcurrentDictionary<TKey, TValue> Overload

System.Collections.Concurrent Namespace

Other Resources

Thread-Safe Collections

How to: Add and Remove Items from a ConcurrentDictionary

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