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Article #2600Re: EVariantTypeCastError
From: Hans J�nsson
Date: Mon, 21 Apr 2003 17:52
Date: Mon, 21 Apr 2003 17:52
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2118 bytes
I have made a simple mistake - I hadn't added the fields of the table. greetings hans. "Hans J�nsson" <042140773@telia.com> skrev i meddelandet news:3e9db3aa@newsgroups.borland.com... > Hello! > I haven't worked with MS Access before but now I have a database in Access > and I > have created a simple program connecting to it with ADO components. I have a > table, a connection and a data source. On the form a grid. It compiles and > build without a hitch, but when I run the program I get Project ADOProj.exe > raised exception class EVariantTypeCastError with message ' Could not > convert variant type (Null) into type (String). The arrow in front of the > "blue band" points at the line : TDataModule(Owner), the last part of the > fastcall line that begins the data module. I looked up the error without > getting much wiser. And if I click OK on the message box and Run|Run the > program runs. Any ideas on what I can have missed out on? I am not used to > work with connection strings (except in ASP). greetings hans. I should add > that the program runs without problems from Run on the Start menu of Windows > XP Pro. greetings hans > >
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X-Google-Language: ENGLISH,ASCII X-Google-Thread: 10698b,d51f9c4146a3da89 X-Google-Attributes: gid10698b,public X-Google-ArrivalTime: 2003-04-21 11:00:50 PST From: "Hans J�nsson" <042140773@telia.com> Newsgroups: borland.public.cppbuilder.database.ado References: <3e9db3aa@newsgroups.borland.com> Subject: Re: EVariantTypeCastError Date: Mon, 21 Apr 2003 19:52:20 +0200 Lines: 26 X-Priority: 3 X-MSMail-Priority: Normal X-Newsreader: Microsoft Outlook Express 6.00.2800.1106 X-MimeOLE: Produced By Microsoft MimeOLE V6.00.2800.1106 NNTP-Posting-Host: 212.181.186.8 Message-ID: <3ea42fce@newsgroups.borland.com> X-Trace: newsgroups.borland.com 1050947534 212.181.186.8 (21 Apr 2003 10:52:14 -0700) Path: arc1-ca.pugleaf.net!archiver1.google.com!news1.google.com!sn-xit-02!sn-xit-03!sn-xit-04!sn-xit-01!sn-xit-09!supernews.com!iad-peer.news.verio.net!news.verio.net!newsfeed.wirehub.nl!news.kweb.on.ca!KWeb!newsgroups.borland.com!not-for-mail