private void btnChangeMenu_Click(object sender, System.EventArgs e) { string name = txbName.Text; string stockText = txbStock.Text; bool parsable = int.TryParse(stockText, out int stock); MenuItem menuItem = (MenuItem)lvwItemOverview.SelectedItems[0].Tag; if (name != string.Empty) { menuItem.ItemName = name; menuItemService.ChangeName(menuItem); } if (parsable) { menuItem.InStock = stock; menuItemService.ChangeStock(menuItem); } txbName.Text = string.Empty; txbStock.Text = string.Empty; DisplayItemOverview(); }