DataflowBlock::ReceiveAsync<TOutput> Method (ISourceBlock<TOutput>^)
Asynchronously receives a value from a specified source.
Assembly: System.Threading.Tasks.Dataflow (in System.Threading.Tasks.Dataflow.dll)
public: generic<typename TOutput> [ExtensionAttribute] static Task<TOutput>^ ReceiveAsync( ISourceBlock<TOutput>^ source )
Parameters
- source
-
Type:
System.Threading.Tasks.Dataflow::ISourceBlock<TOutput>^
The source from which to receive the value.
Return Value
Type: System.Threading.Tasks::Task<TOutput>^A task that represents the asynchronous receive operation. When an item value is successfully received from the source, the returned task is completed and its Result returns the received value. If an item value cannot be retrieved because the source is empty and completed , an InvalidOperationException exception is thrown in the returned task.
Type Parameters
- TOutput
The type of data contained in the source.
| Exception | Condition |
|---|---|
| ArgumentNullException | source is null. |