BorlandTalk.com Borland discussion newsgroups   Archives   FAQ   Search   Memberlist   Usergroups   Register   Profile   Log in to check your private messages   Log in  TQuery for nVarChar (Bug)?          BorlandTalk.com Forum Index -> comp.lang.pascal.delphi.databases View previous topic :: View next topic   Author Message Rahul Guest Posted: Tue Sep 12, 2006 5:55 pm    Post subject: TQuery for nVarChar (Bug)? Hello Firends, I am using a TQuery object to read from the database in which one column is a nVarChar. The Query is firing well and i Couldn't fetch the nVarChar field, if i use VarToWideStr(Query1.FieldByName('nVarCharField').AsVariant). The application is giving access violation. If i access the Database object of the Query1, i could find the nVarCharField column in the fieldlist. But, Database object doesn't provide a means to access the Field. Please help me on this as the application which i m developing is for Multilingual Support. I have used ADOQuery and it worked well. But, shifting the entire project to ADO is a mess. I am using professional edition of delphi6. When i tested the same on Enterprise edition of delphi6, it worked well without any problems. Is this a bug in delphi 6 professional or TQuery won't support nVarChar in professional edition? Thanks in advance. Thanks and Regards, Rahul.W Software Engineer, 3i-Infotech, India Back to top Mike Shkolnik Guest Posted: Wed Sep 13, 2006 12:51 am    Post subject: Re: TQuery for nVarChar (Bug)? You must cast to TWideStringField: yourWideString := (Query1.FieldByName('nVarCharField') as TWideStringField).AsVariant -- With best regards, Mike Shkolnik E-mail: mshkolnik (AT) scalabium (DOT) com WEB: http://www.scalabium.com "Rahul" <w.rahul (AT) gmail (DOT) com> wrote in message news:1158065757.774678.307970 (AT) i42g2000cwa (DOT) googlegroups.com... Quote: Hello Firends, I am using a TQuery object to read from the database in which one column is a nVarChar. The Query is firing well and i Couldn't fetch the nVarChar field, if i use VarToWideStr(Query1.FieldByName('nVarCharField').AsVariant). The application is giving access violation. If i access the Database object of the Query1, i could find the nVarCharField column in the fieldlist. But, Database object doesn't provide a means to access the Field. Please help me on this as the application which i m developing is for Multilingual Support. I have used ADOQuery and it worked well. But, shifting the entire project to ADO is a mess. I am using professional edition of delphi6. When i tested the same on Enterprise edition of delphi6, it worked well without any problems. Is this a bug in delphi 6 professional or TQuery won't support nVarChar in professional edition? Thanks in advance. 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