public partial class FrmServer : Form
    {
        private FbConnection _connect;
        private FbCommand command1;
        private FbDataAdapter DA_Item;
        private DataSet DS_Item;
 
 
        public FrmServer()
        {
            InitializeComponent();
            _connect = new FbConnection("****");
            _connect.Open();
            command1 = _connect.CreateCommand();
            command1.CommandText = "SELECT Item,TipeItem,Name,Cost,Price,weight,Item_date,";
            command1.CommandText += "old_price,barcode FROM ITEM WHERE (barcode IS NOT NULL)";
            DA_Item = new FbDataAdapter(command1);
            DS_Item = new DataSet();
            DA_Item.Fill(DS_Item);
            DataTable TArt_Item = DS_Item.Tables[0];
 
 
        }
    }