public GuidesCarsViewModel(IRegionManager RegionManager) { ApplyGuidesPopupCommand = new DelegateCommand <object>(ApplyGuidesPopup); CloseGuidesPopupCommand = new DelegateCommand <object>(CloseGuidesPopup); EnterprisesList = new ObservableCollection <Enterprises>(); EnterprisesList.AddRange(SessionsHelper.GetEnterprisesList()); CarTypesList = new ObservableCollection <CarTypes>(); CarTypesList.AddRange(SessionsHelper.GetCarTypesList()); }