//private SerieOnline selectedItem;
        //public SerieOnline SelectedItem
        //{
        //    get { return selectedItem; }
        //    set
        //    {
        //        selectedItem = value;
        //        OnPropertyChanged("ButtonHideShowSerieContent");
        //    }
        //}



        //public string FilePath { get; set; }


        private void AddSerieAction(object obj)
        {
            SerieOnline     newSerie     = new SerieOnline("Nowa seria", 0);
            Nullable <bool> dialogResult = new AddEditSerieWindow(ref newSerie).ShowDialog();

            if (dialogResult == true)
            {
                Series.Add(newSerie);
            }
            Command("Table.Refresh");
            Command("Plot.Refresh");
        }
        private void AddSerieAction(object obj)
        {
            SerieOnline     newSerie     = new SerieOnline("Nowa seria", 0);
            Nullable <bool> dialogResult = new AddEditSerieWindow(ref newSerie).ShowDialog();

            if (dialogResult == true)
            {
                Series.Add(newSerie);
                newSerie.Data.CollectionChanged += Data_CollectionChanged;
            }
            OnPropertyChanged("TableView");
            Plot.InvalidatePlot(true);
        }