public TravelViewModel()
{
Travel = new TravelHelper();
Title = Consts.TRAVEL_TITLE_NEW;
_type = PanelType.New;
IsBackButtonVisible = false;
}
public TravelViewModel(Travel travel)
{
Travel = new TravelHelper(travel);
Title = Consts.TRAVEL_TITLE_EDIT;
_type = PanelType.Edit;
IsBackButtonVisible = true;
}
