private void OpenFileName(string filenameStr)
 {
     if (filenameStr != null)
     {
         //String fileStr = File.ReadAllText(filenameStr);
         Console.WriteLine($"Opening {filenameStr}");
         DashboardUC.OpenFileName(filenameStr);
     }
 }
        public MainWindow()
        {
            InitializeComponent();
            DataContext = this;
            // load a dashboard in the view space
            DashboardConfig dashboardConfig = new DashboardConfig("Dashboard");

            DashboardUC_          = new DashboardUC(dashboardConfig);
            MainContainer.Content = DashboardUC_;
            //this.Title = DashboardUC_.DashboardConfig_.DashboardName_;
            DashboardUC_.PropertyChanged += DashboardUC__PropertyChanged;
            //AddSeedCells();
            String fileNameStr = (String)((App)Application.Current).Properties["FilePathArgName"];

            DashboardUC_.OpenFileName(fileNameStr);
        }