Observable.Switch<TSource> Method
Transforms an observable sequence of observable sequences into an observable sequence producing values only from the most recent observable sequence.
Namespace: System.Reactive.Linq
Assembly: System.Reactive (in System.Reactive.dll)
Syntax
'Declaration
<ExtensionAttribute> _
Public Shared Function Switch(Of TSource) ( _
sources As IObservable(Of IObservable(Of TSource)) _
) As IObservable(Of TSource)
'Usage
Dim sources As IObservable(Of IObservable(Of TSource))
Dim returnValue As IObservable(Of TSource)
returnValue = sources.Switch()
public static IObservable<TSource> Switch<TSource>(
this IObservable<IObservable<TSource>> sources
)
[ExtensionAttribute]
public:
generic<typename TSource>
static IObservable<TSource>^ Switch(
IObservable<IObservable<TSource>^>^ sources
)
static member Switch :
sources:IObservable<IObservable<'TSource>> -> IObservable<'TSource>
JScript does not support generic types and methods.
Type Parameters
- TSource
The type of source.
Parameters
- sources
Type: System.IObservable<IObservable<TSource>>
The observable sequence of inner observable sequences.
Return Value
Type: System.IObservable<TSource>
The observable sequence that at any point in time produces the elements of the most recent inner observable sequence that has been received.
Usage Note
In Visual Basic and C#, you can call this method as an instance method on any object of type IObservable<IObservable<TSource>>. When you use instance method syntax to call this method, omit the first parameter. For more information, see or .