Delphi ÓйØÊÂÎñµÄ´¦Àí - Delphi / Êý¾Ý¿âÏà¹Ø
Delphi(Pascal) code:
procedure TfrmRQZLGL.btnDelete_ZLClick(Sender: TObject);
var
Str1,Str2:string;
begin
if Application.MessageBox('ÕýÔÚɾ³ýÐÅÏ¢£¬ÊÇ·ñ¼ÌÐø£¿', 'ÌáʾÐÅÏ¢', MB_YESNO +
MB_ICONQUESTION) = IDYES then
begin
Str1 := Format('delete from RQ_ZLZB where BillNo = %s',[qry_ZLZB.FieldByName('BillNo').AsString]);
Str2 := Format('delete from RQ_ZLMXB where BillNo = %s',[qry_ZLZB.FieldByName('BillNo').AsString]);
if not DMMain.conMain.InTransaction then DMMain.conMain.BeginTrans;
try
DMMain.ExecSQLA(Str1);
DMMain.ExecSQLA(Str2);
except
if DMMain.conMain.InTransaction then DMMain.conMain.RollbackTrans;
end;
DMMain.conMain.CommitTrans;
end;
end;
ÓÐÒÔÉÏ´úÂ룬ÓÃÀ´É¾³ýÖ÷±íºÍ´Ó±íµÄ¹ØÁªÊý¾Ý£¬µ«ÊÇ ±¨´íÁË£¬Ëµ ¡®Ã»ÓлÊÂÎñ¡¯£¬Íû¸ßÈËÖ¸µã£¡
Ó¦¸ÃÊdzö´íºóRollbackTransºóÔÙÖ´ÐÐCommitTrans±¨´í°É
Delphi(Pascal) code:
try
DMMain.ExecSQLA(Str1);
DMMain.ExecSQLA(Str2);
Except
if DMMain.conMain.InTransaction then DMMain.conMain.RollbackTrans;
end;
DMMain.conMain.CommitTrans;
ÎÒÊÇÔÚ Except ÀïÃæÐ´µÄ RollBackTrans ×îºóCommitTransµÄ
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