System.Threading.Tasks.Dataflow Namespace

.NET Framework (current version)

The System.Threading.Tasks.Dataflow namespace provides an actor-based programming model that supports in-process message passing for coarse-grained dataflow and pipelining tasks.

For more information, see Dataflow (Task Parallel Library).

Tip Tip

The TPL Dataflow Library (System.Threading.Tasks.Dataflow namespace) is not distributed with the .NET Framework 4.5. To install the System.Threading.Tasks.Dataflow namespace, open your project in Visual Studio 2012, choose Manage NuGet Packages from the Project menu, and search online for the Microsoft.Tpl.Dataflow package.

  Class Description
Public class Supported by Portable Class Library ActionBlock(TInput) Provides a dataflow block that invokes a provided Action(T) delegate for every data element received.
Public class Supported by Portable Class Library BatchBlock(T) Provides a dataflow block that batches inputs into arrays.
Public class Supported by Portable Class Library BatchedJoinBlock(T1, T2) Provides a dataflow block that batches a specified number of inputs of potentially differing types provided to one or more of its targets.
Public class Supported by Portable Class Library BatchedJoinBlock(T1, T2, T3) Provides a dataflow block that batches a specified number of inputs of potentially differing types provided to one or more of its targets.
Public class Supported by Portable Class Library BroadcastBlock(T) Provides a buffer for storing at most one element at time, overwriting each message with the next as it arrives. Messages are broadcast to all linked targets, all of which may consume a clone of the message.
Public class Supported by Portable Class Library BufferBlock(T) Provides a buffer for storing data.
Public class Supported by Portable Class Library DataflowBlock Provides a set of static (Shared in Visual Basic) methods for working with dataflow blocks.
Public class Supported by Portable Class Library DataflowBlockOptions Provides options used to configure the processing performed by dataflow blocks.
Public class Supported by Portable Class Library DataflowLinkOptions Provides options used to configure a link between dataflow blocks.
Public class Supported by Portable Class Library ExecutionDataflowBlockOptions Provides options used to configure the processing performed by dataflow blocks that process each message through the invocation of a user-provided delegate. These are dataflow blocks such as ActionBlock(TInput) and TransformBlock(TInput, TOutput).
Public class Supported by Portable Class Library GroupingDataflowBlockOptions Provides options used to configure the processing performed by dataflow blocks that group together multiple messages. These are dataflow blocks such as JoinBlock(T1, T2) and BatchBlock(T).
Public class Supported by Portable Class Library JoinBlock(T1, T2) Provides a dataflow block that joins across multiple dataflow sources, not necessarily of the same type, waiting for one item to arrive for each type before they’re all released together as a tuple consisting of one item per type.
Public class Supported by Portable Class Library JoinBlock(T1, T2, T3) Provides a dataflow block that joins across multiple dataflow sources, which are not necessarily of the same type, waiting for one item to arrive for each type before they’re all released together as a tuple that contains one item per type.
Public class Supported by Portable Class Library TransformBlock(TInput, TOutput) Provides a dataflow block that invokes a provided Func(T, TResult) delegate for every data element received.
Public class Supported by Portable Class Library TransformManyBlock(TInput, TOutput) Provides a dataflow block that invokes a provided Func(T, TResult) delegate for every data element received.
Public class Supported by Portable Class Library WriteOnceBlock(T) Provides a buffer for receiving and storing at most one element in a network of dataflow blocks.

  Structure Description
Public structure Supported by Portable Class Library DataflowMessageHeader Provides a container of data attributes for passing between dataflow blocks.

  Interface Description
Public interface Supported by Portable Class Library IDataflowBlock Represents a dataflow block.
Public interface Supported by Portable Class Library IPropagatorBlock(TInput, TOutput) Represents a dataflow block that is both a target for data and a source of data.
Public interface Supported by Portable Class Library IReceivableSourceBlock(TOutput) Represents a dataflow block that supports receiving messages without linking.
Public interface Supported by Portable Class Library ISourceBlock(TOutput) Represents a dataflow block that is a source of data.
Public interface Supported by Portable Class Library ITargetBlock(TInput) Represents a dataflow block that is a target for data.

  Enumeration Description
Public enumeration Supported by Portable Class Library DataflowMessageStatus Represents the status of a DataflowMessageHeader when passed between dataflow blocks.
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