Proper use of TDBF.Lookup
lazarus / 16-Databases

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AlZuur · 2010-09-06 00:22

How should I properly use TDBf.LookUp?

in the following:
  PersonId := Sender.AsInteger;
  PersonName := PersonDbf.Lookup('id', PersonId,
'firstname;lastname');
  aText := PersonName[0] + PersonName[1]; //which should result in
'firstname lastname'

I get a Access Violation or 'External:SIGSEGV' with dbg.
The person database has the fields id, firstname and lastname and
there is a record with the provided person id.
I am in doubt about my use of the lookup method, but I can't find an
example of its proper use anywhere, and if I look in the code of the
method then my use should be more or less correct.
What am I doing wrong in these lines?

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AlZuur · 2010-09-07 00:27

Sorry for that. After a good night sleep, it turned out that I had the
Code: [Select]PersonDbf := TDbf.Create(nil) in the wrong place  . The
code in my original post works quite well, thank you.

Regards.