Windows apps
Collapse the table of content
Expand the table of content
Information
The topic you requested is included in another documentation set. For convenience, it's displayed below. Choose Switch to see the topic in its original location.

DataflowBlock::ReceiveAsync<TOutput> Method (ISourceBlock<TOutput>^, TimeSpan)

 

Asynchronously receives a value from a specified source, observing an optional time-out period.

Namespace:   System.Threading.Tasks.Dataflow
Assembly:  System.Threading.Tasks.Dataflow (in System.Threading.Tasks.Dataflow.dll)

public:
generic<typename TOutput>
[ExtensionAttribute]
static Task<TOutput>^ ReceiveAsync(
	ISourceBlock<TOutput>^ source,
	TimeSpan timeout
)

Parameters

source
Type: System.Threading.Tasks.Dataflow::ISourceBlock<TOutput>^

The source from which to receive the value.

timeout
Type: System::TimeSpan

The maximum time interval, in milliseconds, to wait for the synchronous operation to complete, or an interval that represents -1 milliseconds to wait indefinitely.

Return Value

Type: System.Threading.Tasks::Task<TOutput>^

A task that represents the asynchronous receive operation. When a value is successfully received from the source, the returned task is completed and its Result returns the value. If a value cannot be retrieved because the time-out expired, the returned task is canceled. If the 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.

ArgumentOutOfRangeException

timeout is a negative number other than -1 milliseconds, which represents an infinite time-out period.

-or-

timeout is greater than MaxValue.

Return to top
Show:
© 2017 Microsoft