private void Application_Launching(object sender, LaunchingEventArgs e)
        {

            IsolatedStorageSettings settings = IsolatedStorageSettings.ApplicationSettings;
            List<MyConnection.locationList.locations> source = new List<MyConnection.locationList.locations>();

            if (!settings.Contains("firstrun"))
            {
                source.Add(new MyConnection.locationList.locations("Dulles, VA"));
                source.Add(new MyConnection.locationList.locations("Dulles, VA (Q)"));
            }
}

public locationList()
        {
            InitializeComponent();

            List<locationSelectorClass.locationChoice<locations>> DataSource = locationSelectorClass.locationChoice<locations>.CreateGroups(source,
                System.Threading.Thread.CurrentThread.CurrentUICulture,
                (locations s) => { return s.LastName; }, true);
        }

        public class locations
        {
            public string locName
            {
                get;
                set;
            }


            public locations(string locName)
            {
                this.locName = locName;
            }
        }

List<MyConnection.locationList.locations> source;
private void Application_Launching(object sender, LaunchingEventArgs e)
    {

        IsolatedStorageSettings settings = IsolatedStorageSettings.ApplicationSettings;
        source = new List<MyConnection.locationList.locations>();

        if (!settings.Contains("firstrun"))
        {
            source.Add(new MyConnection.locationList.locations("Dulles, VA"));
            source.Add(new MyConnection.locationList.locations("Dulles, VA (Q)"));
        }
}