楼上: ado.eof需要用true吗?好像不要吧! 我的话就这样写,给楼上大同小异. With Query1 Do Begin Close; Sql.Clear; Sql.Add('Select b From A Where KaoHao=Trim(Edit1.Text)'); Open; end; if Query1.IsEmpty Then ShowMessage('KaoHao is wrong');
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