TaskObservableExtensions.ToTask<TResult> Method (IObservable<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)

public static Task<TResult> ToTask<TResult>(
	this IObservable<TResult> observable,
	CancellationToken cancellationToken,
	Object state

Type Parameters


The type of result.


Type: System.IObservable<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<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<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.