public frm_menu_pedidos()
        {
            InitializeComponent();
            tipos_platos = new cargar_tipos_platos();
            var connectionstring = ConfigurationManager.ConnectionStrings["Default"].ConnectionString;

            connection = new SqlConnection(connectionstring);
        }
 public frm_menu_principal()
 {
     data_logic = new cargar_tipos_platos();
     InitializeComponent();
 }