xaml output in textblock

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Windows

phone

i have w web service i want to show some outpu of this xaml code in textblocks waht is the specific code i must write
thanks so much
i put this code but it doesn't work with me

Public partial class Page1 : PhoneApplicationPage

    {
        WebClient client;
        public Class1 inf = new Class1();
        
        public Page1()
        {
             InitializeComponent();
            client = new WebClient();
            client.DownloadStringCompleted += new DownloadStringCompletedEventHandler(client_DownloadStringCompleted);
            
            
        }

        void client_DownloadStringCompleted(object sender, DownloadStringCompletedEventArgs e)
        {
            if (e.Error == null)
            {
                XElement resultElements = XElement.Parse(e.Result);

                name = resultElements.Element("actorName").Value;
                faculty = resultElements.Element("facultyName").Value;
                subject = resultElements.Element("deptName").Value;
                campusName = resultElements.Element("campusName").Value;
               // studentno = resultElements.Element("uniNo").Value;
                // mobileno = resultElements.Element("mobile").Value;
                string yyy = inf.uri + textBlock1.Text + "/1";

                client.DownloadStringAsync(new Uri(yyy));


                textBlock1.Text = name;
                textBlock2.Text = faculty;
                textBlock3.Text = subject;
                textBlock4.Text = campusName;
            
                
            }