ObservableExtensions.Subscribe<TSource> Method (IObservable<TSource>, Action<TSource>, Action<Exception>, Action)
Subscribes an element handler, an exception handler, and a completion handler to an observable sequence.
Namespace: System
Assembly: System.Reactive (in System.Reactive.dll)
Syntax
'Declaration
<ExtensionAttribute> _
Public Shared Function Subscribe(Of TSource) ( _
source As IObservable(Of TSource), _
onNext As Action(Of TSource), _
onError As Action(Of Exception), _
onCompleted As Action _
) As IDisposable
'Usage
Dim source As IObservable(Of TSource)
Dim onNext As Action(Of TSource)
Dim onError As Action(Of Exception)
Dim onCompleted As Action
Dim returnValue As IDisposable
returnValue = source.Subscribe(onNext, _
onError, onCompleted)
public static IDisposable Subscribe<TSource>(
this IObservable<TSource> source,
Action<TSource> onNext,
Action<Exception> onError,
Action onCompleted
)
[ExtensionAttribute]
public:
generic<typename TSource>
static IDisposable^ Subscribe(
IObservable<TSource>^ source,
Action<TSource>^ onNext,
Action<Exception^>^ onError,
Action^ onCompleted
)
static member Subscribe :
source:IObservable<'TSource> *
onNext:Action<'TSource> *
onError:Action<Exception> *
onCompleted:Action -> IDisposable
JScript does not support generic types and methods.
Type Parameters
- TSource
Parameters
- source
Type: System.IObservable<TSource>
Observable sequence to subscribe to.
- onNext
Type: System.Action<TSource>
Action to invoke for each element in the observable sequence.
- onError
Type: System.Action<Exception>
Action to invoke upon exceptional termination of the observable sequence.
- onCompleted
Type: System.Action
Action to invoke upon graceful termination of the observable sequence.
Return Value
Type: System.IDisposable
IDisposable object used to unsubscribe from the observable sequence.
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 .