WCF 服务如何向其客户端引发事件? [英] How can a WCF Service Raise Events to its Clients?

问题描述

我想知道 WCF 中是否有事件处理方式.我在 WCF 中遇到过回调，但我想在 WCF 中进行事件处理.

I want to know is there way of Event Handling in WCF. I came across Callbacks in WCF, but i want to do Event Handling in WCF.

我的要求就像我想向特定客户端引发事件，而不是向所有在 WCF 中使用事件处理的客户端引发事件，而且我还想维护会话.

My requirement is like i want to raise event to particular clients not to all the clients using Event Handling in WCF and i also want to maintain session.

我在 WCF 中看到过发布者/订阅者模型，它处理回调，但是这个模型发布给所有订阅的客户，但我只想发布给选定的客户.

I have seen Publisher/Subscriber model in WCF which deals with Callback , but this model publish to all the clients who have subscribed but i want to publish only to selected clients.

我认为可以使用 WCF 中的事件来完成.

I think that can be done using Events in WCF.

客户端:

public class Callbacks : IServiceCallback
{
    public void CallToMyClient(string name)
    {
        this.CallToMyClient(name);  

    }
}

protected void Page_Load(object sender, EventArgs e)
{
    Callbacks callback = new Callbacks();            
    ServiceClient client = new ServiceClient(new InstanceContext(callback));        

    client.SubscribeClient();
    client.DoSomeWork(); 
}

推荐答案

您不能使用事件.您可以使用回调来模拟事件.

You cannot use events. You can use callbacks to simulate events.

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