WebAuthenticationResult result = await WebAuthenticationBroker.AuthenticateAsync(WebAuthenticationOptions.None, new Uri("https://manage.windowsazure.com/publishsettings"),new Uri("https://manage.windowsazure.com/publishsettings/GetPublishSettings?"));

        String s = result.ResponseData;
        WebAuthenticationResult result1=await WebAuthenticationBroker.AuthenticateAsync(WebAuthenticationOptions.None, new Uri(s));
        String s1 = result1.ResponseData;
        HttpClient client=new HttpClient();
        HttpRequestMessage request=new HttpRequestMessage();
        request.requestURI=new Uri(s);
        HttpResponseMessage response = await client.sendRequestAsync(request,0);