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Observable.Latest<TSource> Method

Samples the most recent value in an observable sequence.

Namespace:  System.Reactive.Linq
Assembly:  System.Reactive (in System.Reactive.dll)


<ExtensionAttribute> _
Public Shared Function Latest(Of TSource) ( _
    source As IObservable(Of TSource) _
) As IEnumerable(Of TSource)
Dim source As IObservable(Of TSource)
Dim returnValue As IEnumerable(Of TSource)

returnValue = source.Latest()
public static IEnumerable<TSource> Latest<TSource>(
    this IObservable<TSource> source
generic<typename TSource>
static IEnumerable<TSource>^ Latest(
    IObservable<TSource>^ source
static member Latest : 
        source:IObservable<'TSource> -> IEnumerable<'TSource> 
JScript does not support generic types and methods.

Type Parameters

  • TSource
    The type of source.


Return Value

Type: System.Collections.Generic.IEnumerable<TSource>
The enumerable sequence that returns the last sampled element upon each iteration and subsequently blocks until the next element in the observable source sequence becomes available.

Usage Note

In Visual Basic and C#, you can call this method as an instance method on any object of type IObservable<TSource>. When you use instance method syntax to call this method, omit the first parameter. For more information, see or .

See Also


Observable Class

System.Reactive.Linq Namespace