DataflowBlock.AsObservable<TOutput> Method

.NET Framework (current version)

Creates a new IObservable<T> abstraction over the ISourceBlock<TOutput>.

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

public static IObservable<TOutput> AsObservable<TOutput>(
	this ISourceBlock<TOutput> source

Type Parameters


Specifies the type of data contained in the source.


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

The source to wrap.

Return Value

Type: System.IObservable<TOutput>
An IObservable<T> that enables observers to be subscribed to the source.

Usage Note

In Visual Basic and C#, you can call this method as an instance method on any object of type ISourceBlock<TOutput>. When you use instance method syntax to call this method, omit the first parameter. For more information, see Extension Methods (Visual Basic) or Extension Methods (C# Programming Guide).


The source is null.

.NET Framework

Supported in: 4.5

Portable Class Library

Supported in: Portable Class Library