public MainWindowViewModel(IDialogService dialogService, IExcelDataDecoder excelDataDecoder, IDataRepositoryService dataRepositoryService)
 {
     _dialogService         = dialogService;
     _excelDataDecoder      = excelDataDecoder;
     _dataRepositoryService = dataRepositoryService;
     OpenFileCommand        = new DelegateCommand(OpenFileExecute, OpenFileCanExecute);
     SaveFileCommand        = new DelegateCommand(SaveFileExecute, SaveFileCanExecute);
     CloseAppCommand        = new DelegateCommand(CloseAppExecute, CloseAppCanExecute);
 }
 public DataRepositoryService(IEventAggregator ea, IExcelDataDecoder excelDataDecoder)
 {
     _ea = ea;
     _excelDataDecoder = excelDataDecoder;
 }