WP8 issue with html agility pack - windows-phone-8

Question

This is the function I used to get the string content from the website ..the problem is when executed first I cannot get the string content (App.Data2 = userprofile.InnerText;) since it skips to the next line (App.savecontent(App.Data2);) so that I get an empty string. If I recall the function I could get the string. Is there any possibility to solve this issue I need the string value first time automatically
This is my Page.cs code :
namespace Project_Future1
{
public partial class Page1 : PhoneApplicationPage
{
public Page1()
{
InitializeComponent();
{
string url = "http://www.astrosage.com/horoscope/daily-";
HtmlWeb.LoadAsync(url + App.Data + "-horoscope.asp", DownLoad);
}
data();
App.loadContent();
change2();
}
public void change2()
{
try
{
Util.LiveTile.UpdateLiveTile(App.Data2);
}
catch (Exception)
{
}
}
public void DownLoad(object sender, HtmlDocumentLoadCompleted e)
{
if (e.Error == null)
{
HtmlDocument doc = e.Document;
if (doc != null)
{
var userprofile = doc.DocumentNode.SelectSingleNode("//div[#class = 'ui-large-content']");
App.Data2 = userprofile.InnerText;
App.savecontent(App.Data2);
}
}
}
private void data()
{
SelectedSign.Text = App.Data;
SSContent.Text = App.Data2;
}
private void Refresh_click(object sender, EventArgs e)
{
SSContent.Text = App.Data2;
}
private void Fb_Click(object sender, EventArgs e)
{
NavigationService.Navigate(new Uri("/FB.xaml", UriKind.Relative));
}
}
}
this is my App.Xaml.cs File :
public static void savecontent(string save)
{
try
{
if (!string.IsNullOrEmpty(appFileName1))
{
IsolatedStorageFile oIsolatedStorage = IsolatedStorageFile.GetUserStoreForApplication();
oIsolatedStorage.CreateDirectory(appFolder1);
StreamWriter writeFile = new StreamWriter(new IsolatedStorageFileStream(appFolder1 + "\\" + appFileName1, FileMode.OpenOrCreate, oIsolatedStorage));
writeFile.WriteLine(save);
writeFile.Close();
}
}
catch (Exception)
{
throw;
}
}
this is my code to load the content from the storage :
public static void loadContent()
{
IsolatedStorageFile oIsolatedStorage = IsolatedStorageFile.GetUserStoreForApplication();
if (oIsolatedStorage.DirectoryExists(appFolder1))
{
IsolatedStorageFileStream fileStream = oIsolatedStorage.OpenFile(appFolder1 + "\\" + appFileName1, FileMode.Open, FileAccess.Read);
using (StreamReader reader = new StreamReader(fileStream))
{
App.Data2 = reader.ReadLine();
reader.Close();
}
}
}