void CreatePerson(object sender, RoutedEventArgs e)
        {
            //MessageBox.Show("Opret");
            CreateAndEditMenu page = new CreateAndEditMenu();

            page.Show();
        }
        void EditPerson(object sender, RoutedEventArgs e)
        {
            Item item = (Item)dataGrid.SelectedItem;

            if (item != null)
            {
                CreateAndEditMenu page = new CreateAndEditMenu(item);
                page.Show();
            }
        }