Question

"Invalid BLOB length" problem

Asked by: calinutz

I work on an Informix table, and I have there 2 fields:
"no" and "header"
The "header" field is set to byte
I want to insert pictures inside this byte field and when I do that i keep getting this error message...
"Invalid BLOB length"
And if I try to insert a picture of 1 kb it works. Everything else fails.
I only worked with bmp, any other format would give me more errors.
Can anyone help me?
I use the following code to insert the picture:

procedure TForm2.Button2Click(Sender: TObject);
var fs: TFileStream;
bs: TBlobStream;
begin
OpenpictureDialog1.Execute;

with Table1 do
begin
Append;
fs := TFileStream.Create(OpenpictureDialog1.FileName, fmOpenRead);
bs := TBlobStream(CreateBlobStream(FieldByName('header'), bmWrite));
bs.CopyFrom(fs, 0);
bs.Free;
fs.Free;
Post;
end;
Table1.Active:=false;
Table1.Active:=true;

end;

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Asked On
2003-05-10 at 08:23:52ID20612185
Tags

blob

,

invalid

,

length

Topic

Delphi Programming

Participating Experts
3
Points
0
Comments
6

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Answers

 

by: monirPosted on 2003-05-10 at 11:19:08ID: 8500982

I think you should do post before free, rigth?

 

by: Alisher_NPosted on 2003-05-11 at 07:44:33ID: 8504015

- check for latest versions of BDE, ODBC drivers etc
- if you have property "CachedUpdates" in tables or queries try to set them FALSE

 

by: calinutzPosted on 2003-05-15 at 13:37:30ID: 8536388

Sorry but no answer was good for me. I found it out by myself and I would like this question to be removed. How can I do that?
The problem was that the non-blob field I was using had to be set to primary key. That solved the problem.
Thanks anyway monir and Alisher N.
Cheers

 

by: CleanupPingPosted on 2003-09-08 at 22:20:06ID: 9315764

calinutz:
This old question needs to be finalized -- accept an answer, split points, or get a refund.  For information on your options, please click here-> http:/help/closing.jsp#1
EXPERTS:
Post your closing recommendations!  No comment means you don't care.

20120131-EE-VQP-002

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