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ConcurrentDictionary<TKey, TValue> Constructor (Int32, Int32, IEqualityComparer<TKey>)

Initializes a new instance of the System.Collections.Concurrent::ConcurrentDictionary<TKey, TValue> class that is empty, has the specified concurrency level, has the specified initial capacity, and uses the specified System.Collections.Generic::IEqualityComparer<T>.

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

public:
ConcurrentDictionary(
	int concurrencyLevel, 
	int capacity, 
	IEqualityComparer<TKey>^ comparer
)

Parameters

concurrencyLevel
Type: System::Int32

The estimated number of threads that will update the System.Collections.Concurrent::ConcurrentDictionary<TKey, TValue> concurrently.

capacity
Type: System::Int32

The initial number of elements that the System.Collections.Concurrent::ConcurrentDictionary<TKey, TValue> can contain.

comparer
Type: System.Collections.Generic::IEqualityComparer<TKey>

The System.Collections.Generic::IEqualityComparer<T> implementation to use when comparing keys.

ExceptionCondition
ArgumentNullException

comparer is nullptr.

ArgumentOutOfRangeException

concurrencyLevel or capacity is less than 1.

.NET Framework

Supported in: 4.6, 4.5, 4

.NET Framework Client Profile

Supported in: 4

Portable Class Library

Supported in: Portable Class Library

Supported in: Windows Phone 8.1
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