private void Add_Button_Click(object sender, RoutedEventArgs e)
        {
            this.pointList.Add(new MeterPoint());
            PointWindow pointWindow = new PointWindow(pointList[pointList.Count() - 1]);

            pointWindow.ShowDialog();
            Console.WriteLine(pointList.Count());
        }
        private void Edit_Button_Click(object sender, RoutedEventArgs e)
        {
            PointWindow pointWindow = new PointWindow((MeterPoint)lvPointList.SelectedItem);

            pointWindow.ShowDialog();
        }