将消息发送到WCF宿主进程

问题描述：

我有一个托管WCF服务的控制台应用程序。我希望能够从WCF服务的方法触发一个事件，并在WCF服务的宿主进程处理该事件。这可能吗？我会怎么做呢？我可以从ServiceHost的派生自定义类？

I have a Console application hosting a WCF service. I would like to be able to fire an event from a method in the WCF service and handle the event in the hosting process of the WCF service. Is this possible? How would I do this? Could I derive a custom class from ServiceHost?

答

您不需要从的ServiceHost 。还有其他的方法来你的问题。

You don't need to inherit from ServiceHost. There are other approaches to your problem.

您可以传递的，而不是一个类型的ServiceHost $ C $服务类的一个实例， C>。因此，您可以创建实例，然后再开始的的ServiceHost ，并添加自己的事件处理程序，它暴露了任何事件。

You can pass an instance of the service class, instead of a type to ServiceHost. Thus, you can create the instance before you start the ServiceHost, and add your own event handlers to any events it exposes.

下面是一些示例代码：

MyService svc = new MyService();
svc.SomeEvent += new MyEventDelegate(this.OnSomeEvent);
ServiceHost host = new ServiceHost(svc);
host.Open();

有使用这种方法的时候一些注意事项，如在的 http://msdn.microsoft.com/en-us/library/ms585487.aspx

There are some caveats when using this approach, as described in http://msdn.microsoft.com/en-us/library/ms585487.aspx

或者你可以有一个众所周知的单例类，你的服务实例了解并明确调用它的方法时，事件发生了。

Or you could have a well-known singleton class, that your service instances know about and explicitly call its methods when events happen.

将消息发送到WCF宿主进程

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