public MainPage()
{
InitializeComponent();
// Repository für Laden/Sync erzeugen
repository = new NewsRepository();
// ProgressIndicator erzeugen und anzeigen
indicator = new ProgressIndicator();
indicator.Text = "Lade lokale Daten...";
indicator.IsIndeterminate = true;
indicator.IsVisible = true;
SystemTray.SetProgressIndicator(this, indicator);
// Asynchrone Laden der lokalen Daten starten
loadDataTask = repository.LoadLocalDataAsync();
}
/// <summary>
/// Agent that runs a scheduled task
/// </summary>
/// <param name="task">
/// The invoked task
/// </param>
/// <remarks>
/// This method is called when a periodic or resource intensive task is invoked
/// </remarks>
protected override void OnInvoke(ScheduledTask task)
{
OutputAvailableMemory("Start");
try
{
DateTime newsDate = (DateTime)IsolatedStorageSettings.ApplicationSettings["NewsDate"];
NewsRepository repository = new NewsRepository();
OutputAvailableMemory("Repo erzeugt");
repository.GetNewNewsCountAsync(newsDate).ContinueWith(t =>
{
if (t.Status == TaskStatus.RanToCompletion)
{
ShellTile appTile = ShellTile.ActiveTiles.First();
appTile.Update(new StandardTileData() { Count = t.Result });
}
if (task is ResourceIntensiveTask)
{
// Bei einem RessourceIntensiveTask alte Nachrichten löschen
DateTime timeLimit = DateTime.Now.AddMonths(-1);
repository.DeleteNewsOlderThan(timeLimit);
}
OutputAvailableMemory("Ende");
NotifyComplete();
});
}
catch (Exception ex)
{
// Nichts machen
NotifyComplete();
}
}
private void SaveNewestNewsDate()
{
var repository = new NewsRepository();
DateTime newsDate = repository.GetNewestLocalNewsDate();
IsolatedStorageSettings.ApplicationSettings["NewsDate"] = newsDate;
IsolatedStorageSettings.ApplicationSettings.Save();
}