procedure TPassWord.bntOKClick(Sender: TObject);
begin
   if Password.Text = 'password' then
      begin
        RefreshView;
        Close;
      end;
end;procedure TPassWord.RefreshView;
begin
      with DataModule1 do
      begin
            tbStaff.Open;
            tbStaff.Close;
            tbCustomer.Open;
            tbCustomer.Close;      end;
end;这是我密码form里的代码,每次我一运行,就出现错误,大家帮我看看那里出错了,好像是不能读取数据库