JoinBlock<T1,T2,T3>.ISourceBlock<Tuple<T1,T2,T3>>.ConsumeMessage Method

Reference

Definition

Namespace:: System.Threading.Tasks.Dataflow

Assembly:: System.Threading.Tasks.Dataflow.dll

Package:: System.Threading.Tasks.Dataflow v10.0.0-preview.1.25080.5

Source:: JoinBlock.cs

Source:: JoinBlock.cs

Source:: JoinBlock.cs

Source:: JoinBlock.cs

Important

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Passes the ownership of the message identified by the DataflowMessageHeader from this ISourceBlock<TOutput> instance to the ITargetBlock<TInput>.

 virtual Tuple<T1, T2, T3> ^ System.Threading.Tasks.Dataflow.ISourceBlock<System.Tuple<T1,T2,T3>>.ConsumeMessage(System::Threading::Tasks::Dataflow::DataflowMessageHeader messageHeader, System::Threading::Tasks::Dataflow::ITargetBlock<Tuple<T1, T2, T3> ^> ^ target, [Runtime::InteropServices::Out] bool % messageConsumed) = System::Threading::Tasks::Dataflow::ISourceBlock<Tuple<T1, T2, T3> ^>::ConsumeMessage;

Tuple<T1,T2,T3> ISourceBlock<Tuple<T1,T2,T3>>.ConsumeMessage(System.Threading.Tasks.Dataflow.DataflowMessageHeader messageHeader, System.Threading.Tasks.Dataflow.ITargetBlock<Tuple<T1,T2,T3>> target, out bool messageConsumed);

abstract member System.Threading.Tasks.Dataflow.ISourceBlock<System.Tuple<T1,T2,T3>>.ConsumeMessage : System.Threading.Tasks.Dataflow.DataflowMessageHeader * System.Threading.Tasks.Dataflow.ITargetBlock<'T1 * 'T2 * 'T3> * bool -> 'T1 * 'T2 * 'T3
override this.System.Threading.Tasks.Dataflow.ISourceBlock<System.Tuple<T1,T2,T3>>.ConsumeMessage : System.Threading.Tasks.Dataflow.DataflowMessageHeader * System.Threading.Tasks.Dataflow.ITargetBlock<'T1 * 'T2 * 'T3> * bool -> 'T1 * 'T2 * 'T3

Function ConsumeMessage (messageHeader As DataflowMessageHeader, target As ITargetBlock(Of Tuple(Of T1, T2, T3)), ByRef messageConsumed As Boolean) As Tuple(Of T1, T2, T3) Implements ISourceBlock(Of Tuple(Of T1, T2, T3)).ConsumeMessage

Parameters

messageHeader: DataflowMessageHeader

The DataflowMessageHeader of the message that is to be consumed.

target: ITargetBlock<Tuple<T1,T2,T3>>

The ITargetBlock<TInput> for which the message is to be consumed.

messageConsumed: Boolean

true if the message was successfully consumed. false otherwise.

Returns

Tuple<T1,T2,T3>

The value of the consumed message. This may correspond to a different DataflowMessageHeader instance than was previously reserved and passed as the messageHeader to this method. The consuming ITargetBlock<TInput> must use the returned value instead of the value passed as messageValue to OfferMessage(DataflowMessageHeader, TInput, ISourceBlock<TInput>, Boolean). If the message requested is not available, the return value is null (Nothing in Visual Basic).

Implements

ConsumeMessage(DataflowMessageHeader, ITargetBlock<TOutput>, Boolean)

Exceptions

ArgumentException

The messageHeader is not valid.

ArgumentNullException

The target is null (Nothing in Visual Basic).

Remarks

The ITargetBlock<TInput> for which the message is to be consumed need not be linked from this ISourceBlock<TOutput> instance. Moreover, this ISourceBlock<TOutput> instance may have never offered the message directly to the ITargetBlock<TInput>.

Applies to

Proizvod	Verzije
.NET	Core 1.0, Core 1.1, Core 2.0, Core 2.1, Core 2.2, Core 3.0, Core 3.1, 5, 6, 7, 8 (package-provided), 8, 9 (package-provided), 9, 10 (package-provided), 10
.NET Standard	2.0 (package-provided), 2.1 (package-provided)
UWP	10.0

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