How can a WCF Service Raise Events to its Clients?

Question

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.

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.

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.

I think that can be done using Events in WCF.

Client side :

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(); 
}

question from:https://stackoverflow.com/questions/5739501/how-can-a-wcf-service-raise-events-to-its-clients

Answer 1

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