Search a memo using onfilterrecord

Hi,

I am using DBISAM as a BDE replacement and need to be able to search for text within a memo. I have been told that using onfilterrecord works, but my attempts to implement it have failed so far.

How to you do this?

Onfilterevent...

Accept:???

Thanks

John
JohnEAsked:
Who is Participating?
I wear a lot of hats...

"The solutions and answers provided on Experts Exchange have been extremely helpful to me over the last few years. I wear a lot of hats - Developer, Database Administrator, Help Desk, etc., so I know a lot of things but not a lot about one thing. Experts Exchange gives me answers from people who do know a lot about one thing, in a easy to use platform." -Todd S.

 
rwilson032697Commented:
You should be able to do this:

procedure TForm1.Table1FilterRecord(DataSet: TDataSet; var Accept: Boolean);

begin
  Accept := Pos('The string to search for', DataSet['TheMemoField']) > 0;
end;

Cheers,

Raymond.
0
 
kretzschmarCommented:
i guess that is not possible :-(
0
 
simonetCommented:
What about using the LIKE keyword:

SELECT * FROM TABLE1 WHERE FIELDX LIKE '%partial string%'

(I just can't remember if it is '%' or '*' for the LIKE comparision).

Yours,

Alex
0
Cloud Class® Course: Microsoft Exchange Server

The MCTS: Microsoft Exchange Server 2010 certification validates your skills in supporting the maintenance and administration of the Exchange servers in an enterprise environment. Learn everything you need to know with this course.

 
kretzschmarCommented:
alex, i guess this will also not work for blobs
0
 
intheCommented:
Var
SearchCode: String;
 
procedure TForm1.Table1FilterRecord(DataSet: TDataSet;var Accept: Boolean);
  begin
Accept := (AnsiStrLIComp(PChar(Table1MemoField.AsString),         PChar(SearchCode), Length(SearchCode)) = 0);
  end;


ps alex your correct already its percent (though im not sure if it is
 '%searchcode%' or 'searchcode%' ;-)
0
 
kretzschmarCommented:
its % for sql-statement-where-clause
its * for filters, where it can only be appended

to barry,
i guess this does not work,
had tested it similar (not with a persistent field)
and get the error: Cannot access Field ... on Filter (or similar)
did you tested it?
i guess no, then you had post an answer :-))
meikl
0
 
JohnEAuthor Commented:
Raymond's answer works great. Is there a way to make it case insensitive?

Thanks

John
0
 
kretzschmarCommented:
i guess i was wrong ;-)
0
 
rwilson032697Commented:
How about this:

procedure TForm1.Table1FilterRecord(DataSet: TDataSet; var Accept: Boolean);

begin
  Accept := Pos(UpperCase('The string to search for'), UpperCase(DataSet['TheMemoField'])) > 0;
end;

You could factor out the uppercase-ing of the search string to make it a little faster...

Cheers,

Raymond.

0

Experts Exchange Solution brought to you by ConnectWise

Your issues matter to us.

Facing a tech roadblock? Get the help and guidance you need from experienced professionals who care. Ask your question anytime, anywhere, with no hassle.

Start your 7-day free trial
 
JohnEAuthor Commented:
Thanks Raymond - works perfectly!
0
Question has a verified solution.

Are you are experiencing a similar issue? Get a personalized answer when you ask a related question.

Have a better answer? Share it in a comment.

All Courses

From novice to tech pro — start learning today.