TaskObservableExtensions.ToTask(Of TResult) Method (IObservable(Of TResult), CancellationToken, Object)

Returns a task that contains the last value of the observable sequence.

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

<ExtensionAttribute> _
Public Shared Function ToTask(Of TResult) ( _
	observable As IObservable(Of TResult), _
	cancellationToken As CancellationToken, _
	state As Object _
) As Task(Of TResult)
Dim observable As IObservable(Of TResult)
Dim cancellationToken As CancellationToken
Dim state As Object
Dim returnValue As Task(Of TResult)

returnValue = observable.ToTask(cancellationToken, _

Type Parameters


The type of result.


Type: System.IObservable(Of TResult)
The observable sequence to convert to a task.
Type: System.Threading.CancellationToken
Cancellation token that can be used to cancel the task, causing unsubscription from the observable sequence.
Type: System.Object
The state to use as the underlying task's AsyncState.

Return Value

Type: System.Threading.Tasks.Task(Of TResult)
A task that contains the last value of the observable sequence.

Usage Note

In Visual Basic and C#, you can call this method as an instance method on any object of type IObservable(Of TResult). When you use instance method syntax to call this method, omit the first parameter. For more information, see https://msdn.microsoft.com/en-us/library/bb384936(v=vs.103).aspx or https://msdn.microsoft.com/en-us/library/bb383977(v=vs.103).aspx.