private void SetAppcastURL()
        {
            String currentFeed = _preferences.getProperty("update.feed");
            String feedUrl     = _preferences.getProperty("update.feed." + currentFeed);

            Log.debug("Setting feed URL to " + feedUrl);
            WinSparkle.SetAppcastUrl(feedUrl);
        }
 public override void check(bool background)
 {
     Log.debug($"Checking for updates, background= {background}");
     WinSparkle.SetAppcastUrl(this.getFeedUrl());
     if (background)
     {
         WinSparkle.CheckUpdateWithoutUi();
     }
     else
     {
         WinSparkle.CheckUpdateWithUi();
     }
     _preferences.setProperty("update.check.last", DateTime.Now.Ticks);
 }