private void FactorySelected(object sender, System.Windows.Controls.SelectionChangedEventArgs e)
        {
            if (FactoryList.Items.Count > 0)
            {
                ClientServerUtil usr             = ClientServerUtil.getInstance(); // TODO ServerInput.Text setzen
                string           selectedFactory = (string)FactoryList.SelectedItem;
                int id = getIdFromFactoryString(selectedFactory);

                usr.connectToFactory(id);
                usr.registerFactoryMQListener(id, this);

                clearToolbox();
                initToolbox();

                // 2D
                clearGrid();
                initGrid();

                Width.Text  = usr.getAreaWidth().ToString();
                Height.Text = usr.getAreaLength().ToString();
            }
        }