public StoreApp GetAppByAumid(string appUserModelId)
        {
            // first attempt to get an app in our list already
            foreach (var storeApp in _appList)
            {
                if (storeApp.AppUserModelId == appUserModelId)
                {
                    return(storeApp);
                }
            }

            // not in list, get from StoreAppHelper
            StoreApp app = StoreAppHelper.GetStoreApp(appUserModelId);

            if (app != null)
            {
                _appList.Add(app);
                return(app);
            }

            // no app found for given AUMID
            return(null);
        }
 public void FetchApps()
 {
     _appList.Clear();
     _appList.AddRange(StoreAppHelper.GetStoreApps());
 }