Vista - How to call the callback method from host (not from service which hosted)?

I written the windows service hosted the WCF service which have callback
features. I can call callback method from service and client. However,
some case is need to call callback functions to notify client side. For
example, our windows service is stopping, it is need to notify the client.
But I don't know how to raise callback from host. Is there any example or
methods to help me?

How to call the callback method from host (not from service which hosted)?

Greetings

Your service should have a duplex contract.
To create a duplex contract check this URL:
http://msdn2.microsoft.com/en-us/library/ms731184.aspx
To create a client that consumes a duplex contract check this:
http://msdn2.microsoft.com/en-us/library/ms731935.aspx

Regards
Sherif

"ABC" <abc@abc.com> wrote in message
news:OHteO1QoHHA.4024@TK2MSFTNGP02.phx.gbl...
>I written the windows service hosted the WCF service which have callback
>features. I can call callback method from service and client. However,
>some case is need to call callback functions to notify client side. For
>example, our windows service is stopping, it is need to notify the client.
>But I don't know how to raise callback from host. Is there any example or
>methods to help me?
>
> How to call the callback method from host (not from service which hosted)?
>
>