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Observable.Replay(Of TSource, TResult) Method (IObservable(Of TSource), Func(Of IObservable(Of TSource), IObservable(Of TResult)), TimeSpan)

Returns an observable sequence that is the result of invoking the selector on a connectable observable sequence that shares a single subscription to the underlying sequence replaying all notifications within window.

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

'Declaration
<ExtensionAttribute> _
Public Shared Function Replay(Of TSource, TResult) ( _
	source As IObservable(Of TSource), _
	selector As Func(Of IObservable(Of TSource), IObservable(Of TResult)), _
	window As TimeSpan _
) As IObservable(Of TResult)
'Usage
Dim source As IObservable(Of TSource)
Dim selector As Func(Of IObservable(Of TSource), IObservable(Of TResult))
Dim window As TimeSpan
Dim returnValue As IObservable(Of TResult)

returnValue = source.Replay(selector, _
	window)

Type Parameters

TSource

The type of source.

TResult

The type of result.

Parameters

source
Type: System.IObservable(Of TSource)
The source sequence whose elements will be multicasting through a single shared subscription.
selector
Type: System.Func(Of IObservable(Of TSource), IObservable(Of TResult))
The selector function which can use the multicasted source sequence as many times as needed, without causing multiple subscriptions to the source sequence.
window
Type: System.TimeSpan
The maximum time length of the replay buffer.

Return Value

Type: System.IObservable(Of TResult)
An observable sequence that contains the elements of a sequence produced by multicasting the source sequence within a selector function.

Usage Note

In Visual Basic and C#, you can call this method as an instance method on any object of type IObservable(Of TSource). When you use instance method syntax to call this method, omit the first parameter. For more information, see http://msdn.microsoft.com/en-us/library/bb384936(v=vs.103).aspx or http://msdn.microsoft.com/en-us/library/bb383977(v=vs.103).aspx.
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