Silverligt UploadStringAsync ve Ado.net DataService

        string uri = Application.Current.Host.Source.AbsoluteUri;
        int index = uri.IndexOf("/ClientBin");
        uri = uri.Substring(0, index);
        WebClient wc = new WebClient();
        wc.Headers[HttpRequestHeader.ContentType] = "application/x-www-form-urlencoded";
        var query = "ad=" + txtAd.Text + "&soyad=" + txtSoyad.Text;
        wc.UploadStringAsync(new Uri(uri + "/Default.aspx"), query);
        wc.UploadStringCompleted += new UploadStringCompletedEventHandler(wc_UploadStringCompleted);