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save jpeg to BLOB

i want to save a jpeg file to a BLOB column in SQl Server

my code is here

 if opendialog1.execute then

 dbimage1.picture.loadfromfile(opendialog1.FileName);

but the problem is it can only recognize the bmp file,and show the message as "unknown jpeg file."

what's the problem and how to show jpeg to the column.

ws1999
0
ws1999
Asked:
ws1999
1 Solution
 
MotazCommented:
1. Loading files into Blob fields:

procedure TForm1.btLoadClick(Sender: TObject);
begin
  if OpenDialog1.Execute then
  begin
   try
    Table1.Append;
         (*** Save file name in a string field called "File" ***)
    Table1.FieldByName('File').AsString:=
      ExtractFileName(OpenDialog1.FileName);

         (*** Load file contents into Blob field ***)
    TBlobField(Table1.FieldByName('Data')).LoadFromFile(OpenDialog1.FileName);

    Table1.Post;
   except
     on E: Exception do
       Table1.Cancel;
   end; // try

  end;  // if OpenDialog
end;


2. Extracting files from Blob fields:

Next example illustrates how to read file from a Blob field:

- Add ShellApi in Uses clause:

procedure TForm1.btOpenClick(Sender: TObject);
var
  FileName: string;
begin
  FileName:= Table1.FieldByName('File').AsString;

  (*** Save Blob field contents into disk ***)
  TBlobField(Table1.FieldByName('Data')).SaveToFile(FileName);

  (*** Open the file ***)
  ShellExecute(handle, 'open',
    PChar(FileName), nil, nil, sw_Normal);
end;


Motaz
0
 
MotazCommented:
What is the components did you use? BDE or ADO?
0
 
ws1999Author Commented:
hi,Motaz

i use BDE to access database
0
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MotazCommented:
Then, no problem, it will work
0
 
amp072397Commented:
ws1999:

You have many open questions to which you must return:

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thanks!
amp
community support moderator

2/8
0
 
MoondancerCommented:
ADMINISTRATION WILL BE CONTACTING YOU SHORTLY REGARDING YOUR ACCOUNT AND OPEN QUESTIONS.

Question(s) below appears to have been abandoned. Your options are:
 
1. Accept a Comment As Answer (use the button next to the Expert's name).
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MoondancerCommented:
Finalized.
0

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