private void DataList1_ItemCommand(object source, DataListCommandEventArgs e)
    {
        if (e.CommandName == "add")
        {
            string appo = e.Item.FindControl("Cod_Prod").ToString();
            strConn = "PROVIDER=Microsoft.Jet.OLEDB.4.0;DATA SOURCE=" + Server.MapPath("Lam - Copia.mdb") + ";";
            Conn = new OleDbConnection(strConn);
            User = Convert.ToString(Session["Username"]);
            strSQL = "INSERT INTO Acquisti(Username,Cod_Prod) VALUES ('Carlo','"+appo+"');";
            Cmd = new OleDbCommand(strSQL, Conn);
            Conn.Open();
            Cmd.ExecuteNonQuery();
            Conn.Close();
            
        }
    }