public Form1() { InitializeComponent(); control = new Ux_control(gb_order, gb_client, gb_product); bll_client = new BLL_client(); bll_product = new BLL_product(); L_bllProduct = new List <BLL_product>(); L_bllClient = new List <BLL_client>(); sellerlist = new List <BLL_product>(); sellerClient = new BLL_client(); verification = new verify(); count_voucher = 1; count_purchase = 1; con = new connection(); try { con.init(); string query = "SELECT `number` FROM `count` WHERE id like " + 1; command = new MySqlCommand(query, con.connect); infos = command.ExecuteReader(); while (infos.Read()) { count_purchase = Convert.ToInt32(infos["number"]); } con.disconnect(); } catch (Exception excep) { throw new Exception("Erro de comandos!\n" + excep.Message); } }