急求救：用adotable为何无法先后连接两个表？

Question

用adotable为何无法先后连接两个表？这里有两个表 tab1 (localIp,localPort)
             tab2 (remoteIp,remotePort)procedure getTab1;
begin
     with adotable1 do
     begin
          tablename:='tab1';
          IPDbEdit.datafield:='localIp';
          PortDbEdit.datafield:='localPort';
          active;
          edit;
     end;
end;procedure getTab2;
begin
     with adotable1 do
     begin
          tablename:='tab2';
          remoteIpDbEdit.datafield:='remoteIp';
          remotePortDbEdit.datafield:='remotePort';
          active;
          edit;
     end;
end;我在调用getTab1访问tab1 在IPDbEdit,PortDbEdit 中获得tab1相应字段值后，再调用getTab2
访问tab2 在remoteIpDbEdit,remotePortDbEdit 中获得tab2相应字段值时，访问数据库失败；
只单独使用两者时，不会出错。请大侠看看上述过程哪里有问题，并给予解决，多谢

Answer 1

用ADOQUERY吧
可以考虑用两个啊

Answer 2

DataSource1  对应DBGrid1  对应表 aaa
DataSource2  对应DBGrid2  对应表 ddd
其实用ADOQuery比较好点
procedure TForm1.Button2Click(Sender: TObject);
begin
  ADOTable1.Close;
  DataSource2.Enabled:=false;
  DataSource1.Enabled:=true;
  ADOTable1.TableName:= 'aaa';
  ADOTable1.Open;
end;procedure TForm1.Button3Click(Sender: TObject);
begin
  ADOTable1.Close;
  DataSource1.Enabled:=false;
  DataSource2.Enabled:=true;
  ADOTable1.TableName:= 'ddd';
  ADOTable1.Open;
end;

Answer 3

DataSource1  对应DBGrid1  对应表 aaa
DataSource2  对应DBGrid2  对应表 ddd
建议用一个ADOQuery,用两个datasource好实现一点