private void cmdCallService_Click(object sender, RoutedEventArgs e)
        {
            System.ServiceModel.EndpointAddress address = new System.ServiceModel.EndpointAddress("http://localhost:" +
                                                                                                  HtmlPage.Document.DocumentUri.Port + "/TypeSharing.Web/TestService.svc");
            TestServiceClient proxy = new TestServiceClient();

            proxy.Endpoint.Address = address;

            proxy.GetCustomerCompleted += GetCustomerCompleted;
            proxy.GetCustomerAsync(0);
        }