private void callCachedService_Click(object sender, RoutedEventArgs e)
{
System.ServiceModel.EndpointAddress address = new System.ServiceModel.EndpointAddress("http://localhost:" +
HtmlPage.Document.DocumentUri.Port + "/SilverlightApplication.Web/TestService.svc");
TestServiceClient proxy = new TestServiceClient();
proxy.Endpoint.Address = address;
proxy.GetCachedServerTimeCompleted += new EventHandler <GetCachedServerTimeCompletedEventArgs>(GetCachedServerTimeCompleted);
proxy.GetCachedServerTimeAsync();
}