public void GotoGridLayout()
 {
     Debug.WriteLine("GotoGridLayout");
     LayoutState = LayoutStateEnum.Grid;
 }
        public void GotoFlockLayout()
        {
            Debug.WriteLine("GotoFlockLayout");

            if (appModel.LoadProgress == 100d)
            {
                LayoutState = LayoutStateEnum.Flock;
            }
            else
            {
                ShowFlocksNotReady();
            }
        }