Observable.Do<TSource> Method (IObservable<TSource>, Action<TSource>, Action)
Invokes an action for each element in the observable sequence and invokes an action upon graceful termination of the observable sequence.
Namespace: System.Reactive.Linq
Assembly: System.Reactive (in System.Reactive.dll)
Syntax
'Declaration
<ExtensionAttribute> _
Public Shared Function Do(Of TSource) ( _
source As IObservable(Of TSource), _
onNext As Action(Of TSource), _
onCompleted As Action _
) As IObservable(Of TSource)
'Usage
Dim source As IObservable(Of TSource)
Dim onNext As Action(Of TSource)
Dim onCompleted As Action
Dim returnValue As IObservable(Of TSource)
returnValue = source.Do(onNext, onCompleted)
public static IObservable<TSource> Do<TSource>(
this IObservable<TSource> source,
Action<TSource> onNext,
Action onCompleted
)
[ExtensionAttribute]
public:
generic<typename TSource>
static IObservable<TSource>^ Do(
IObservable<TSource>^ source,
Action<TSource>^ onNext,
Action^ onCompleted
)
static member Do :
source:IObservable<'TSource> *
onNext:Action<'TSource> *
onCompleted:Action -> IObservable<'TSource>
JScript does not support generic types and methods.
Type Parameters
- TSource
The type of source
Parameters
- source
Type: System.IObservable<TSource>
The source sequence.
- onNext
Type: System.Action<TSource>
The action to invoke for each element in the observable sequence.
- onCompleted
Type: System.Action
The action to invoke upon graceful termination of the observable sequence.
Return Value
Type: System.IObservable<TSource>
The source sequence with the side-effecting behavior applied.
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 .