Observable.Buffer<TSource> Method (IObservable<TSource>, TimeSpan, Int32)

Indicates each element of an observable sequence into a buffer that’s sent out when either it’s full or a given amount of time has elapsed.

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


<ExtensionAttribute> _
Public Shared Function Buffer(Of TSource) ( _
    source As IObservable(Of TSource), _
    timeSpan As TimeSpan, _
    count As Integer _
) As IObservable(Of IList(Of TSource))
Dim source As IObservable(Of TSource)
Dim timeSpan As TimeSpan
Dim count As Integer
Dim returnValue As IObservable(Of IList(Of TSource))

returnValue = source.Buffer(timeSpan, _
public static IObservable<IList<TSource>> Buffer<TSource>(
    this IObservable<TSource> source,
    TimeSpan timeSpan,
    int count
generic<typename TSource>
static IObservable<IList<TSource>^>^ Buffer(
    IObservable<TSource>^ source, 
    TimeSpan timeSpan, 
    int count
static member Buffer : 
        source:IObservable<'TSource> * 
        timeSpan:TimeSpan * 
        count:int -> IObservable<IList<'TSource>> 
JScript does not support generic types and methods.

Type Parameters

  • TSource
    The type source


  • count
    Type: System.Int32
    The maximum element count of a window.

Return Value

Type: System.IObservable<IList<TSource>>
The observable sequence of buffers.

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

Buffer Overload

System.Reactive.Linq Namespace