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Qbservable.Latest<TSource> Method

Samples the most recent value in a queryable observable sequence.

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


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

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

Type Parameters

  • TSource
    The type of source.


Return Value

Type: System.Linq.IQueryable<TSource>
The enumerable sequence that returns the last sampled element upon each iteration and subsequently blocks until the next element in the queryable 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 IQbservable<TSource>. When you use instance method syntax to call this method, omit the first parameter. For more information, see or .

See Also


Qbservable Class

System.Reactive.Linq Namespace