public LastSyncCriteriaViewModel(LastSyncCriteriaElement view, bool isVisibleBtn) : this(view)
 {
     BtnAddVisible = isVisibleBtn;
 }
 public LastSyncCriteriaViewModel(LastSyncCriteriaElement view)
 {
     _view = view;
     CbLastSyncOpeItems    = ApplicationContext.CbLastSyncOpeItems;
     CbLastSyncOpeSelected = CbLastSyncOpeItems.Count > 0? CbLastSyncOpeItems[0]:"";
 }