public int Test()
        {
            int p = 0;
            try
            {
                BasicHttpBinding binding = new BasicHttpBinding();
                binding.Security.Mode = BasicHttpSecurityMode.TransportCredentialOnly;
                binding.Security.Transport.ClientCredentialType = HttpClientCredentialType.Ntlm;
                EndpointAddress endpoint =
                    new EndpointAddress(SPContext.Current.Web.Url + "/_vti_bin/TestWCF.svc");
                AjaxWCF.Test.WCFServiceClient proxy = new Test.WCFServiceClient(binding,endpoint);
                proxy.ClientCredentials.Windows.AllowedImpersonationLevel =
                    System.Security.Principal.TokenImpersonationLevel.Impersonation;

                    //Call web service.
                string [] pow = proxy.GetItems();

                    //Refresh the UI.
                foreach (string i in pow)
                {
                    p++;
                }
            }
            catch (Exception exc)
            {

                throw;
            }
            return p;
        }