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BlockingCollection<T>.Take Method (CancellationToken)

Removes an item from the BlockingCollection<T>.

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

public T Take(
	CancellationToken cancellationToken


Type: System.Threading.CancellationToken
Object that can be used to cancel the take operation.

Return Value

Type: T
The item removed from the collection.


The CancellationToken is canceled.


The BlockingCollection<T> has been disposed or the CancellationTokenSource that created the token was canceled.


The underlying collection was modified outside of this BlockingCollection<T> instance or the BlockingCollection is marked as complete for adding, or the BlockingCollection<T> is empty.

A call to Take may block until an item is available to be removed or the token is canceled.

The order in which an item is removed depends on the type of collection used to create the BlockingCollection<T> instance. When you create a BlockingCollection<T> object, you can specify the type of collection to use. For example, you could specify a ConcurrentConcurrentQueue object for first in, first out (FIFO) behavior, or a ConcurrentStack<T> object for last in, first out (LIFO) behavior. You can use any collection class that implements the IProducerConsumerCollection<T> interface. The default collection type for BlockingCollection<T> is ConcurrentQueue<T>.

.NET Framework

Supported in: 4

.NET Framework Client Profile

Supported in: 4

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.