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How to visist the method or member of service class?

Posted By:      Posted Date: November 04, 2010    Points: 0   Category :WCF

i have a service interface such as IPublishService(PublishService), and i run the service like below:

Uri publishAddress = new Uri("net.tcp://localhost:8004/QTAServer");
publishHost = new ServiceHost(typeof(PublishService), publishAddress);

suppose the pulishservice has a public member news, how can i visit the news memeber in the server client, i have tried method like below:

PublishService ps = publishHost.SingletonInstance as PublishService;


but it is wrong, why is my method not correct?  is there any other method?

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