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Qbservable.Do(TSource) Method (IQbservable(TSource), Expression(Action(TSource)), Expression(Action(Exception)), Expression(Action))

Invokes an action for each element in the queryable observable sequence, and invokes an action upon graceful or exceptional termination of the queryable observable sequence.

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

Syntax

C++

JScript

static member Do : 
        source:IQbservable<'TSource> * 
        onNext:Expression<Action<'TSource>> * 
        onError:Expression<Action<Exception>> * 
        onCompleted:Expression<Action> -> IQbservable<'TSource>

Type Parameters

TSource: The type of source.

Parameters

source: Type: System.Reactive.Linq.IQbservable(TSource)
The source sequence.

onNext: Type: System.Linq.Expressions.Expression(Action(TSource))
The action to invoke for each element in the queryable observable sequence.

onError: Type: System.Linq.Expressions.Expression(Action(Exception))
The action to invoke upon exceptional termination of the queryable observable sequence.

onCompleted: Type: System.Linq.Expressions.Expression(Action)
The action to invoke upon graceful termination of the queryable observable sequence.

Return Value

Type: System.Reactive.Linq.IQbservable(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 IQbservable(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.

Reference

Qbservable Class

Do Overload

System.Reactive.Linq Namespace

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