IEventSource<T>.OnNext 事件

引发 Next 事件，向数据流中的下一个元素发出信号。

Namespace：System.Reactive
装配： System.Reactive.dll) 中的 System.Reactive (

语法

'Declaration
Event OnNext As Action(Of T)

'Usage
Dim instance As IEventSource
Dim handler As Action(Of T)

AddHandler instance.OnNext, handler

event Action<T> OnNext

 event Action<T>^ OnNext {
    void add (Action<T>^ value);
    void remove (Action<T>^ value);
}

abstract OnNext : IEvent<Action<'T>,
    EventArgs>

JScript supports the use of events, but not the declaration of new ones.