conExcel.ConnectionString := format('Provider=Microsoft.Jet.OLEDB.4.0;Data Source=%s;'
                                      +'Extended Properties=Excel 8.0;HDR=Yes;IMEX=1;Persist Security Info=False',
                                        [ed1F_DoorID.Text]);提示:
找不到可安装的 isam如果是:
    conExcel.ConnectionString := format('Provider=Microsoft.Jet.OLEDB.4.0;Data Source=%s;'
                                      +'Extended Properties=Excel 8.0;Persist Security Info=False',
                                        [ed1F_DoorID.Text]);就可以,但是这个有些值查出来是null