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Qbservable.MostRecent<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 MostRecent(Of TSource) ( _
    source As IQbservable(Of TSource), _
    initialValue As TSource _
) As IQueryable(Of TSource)
Dim source As IQbservable(Of TSource)
Dim initialValue As TSource
Dim returnValue As IQueryable(Of TSource)

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

Type Parameters

  • TSource
    The type of source.


  • source
    Type: System.Reactive.Linq.IQbservable<TSource>
    The source queryable observable sequence.

  • initialValue
    Type: TSource
    The initial value that will be yielded by the enumerable sequence if no element has been sampled yet.

Return Value

Type: System.Linq.IQueryable<TSource>
The enumerable sequence that returns the last sampled element upon each iteration.

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