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TaskObservableExtensions.ToTask<TResult> Method (IObservable<TResult>, 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), _
    state As Object _
) As Task(Of TResult)
Dim observable As IObservable(Of TResult)
Dim state As Object
Dim returnValue As Task(Of TResult)

returnValue = observable.ToTask(state)
public static Task<TResult> ToTask<TResult>(
    this IObservable<TResult> observable,
    Object state
generic<typename TResult>
static Task<TResult>^ ToTask(
    IObservable<TResult>^ observable, 
    Object^ state
static member ToTask : 
        observable:IObservable<'TResult> * 
        state:Object -> Task<'TResult> 
JScript does not support generic types and methods.

Type Parameters

  • TResult
    The type of result.


  • observable
    Type: System.IObservable<TResult>
    The observable sequence to convert to a task.
  • state
    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 or .

See Also


TaskObservableExtensions Class

ToTask Overload

System.Reactive.Threading.Tasks Namespace