Solved

save jpeg to BLOB

Posted on 2001-09-08
7
499 Views
Last Modified: 2013-11-19
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
Comment
Question by:ws1999
7 Comments
 
LVL 7

Accepted Solution

by:
Motaz earned 30 total points
ID: 6467989
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
 
LVL 7

Expert Comment

by:Motaz
ID: 6468022
What is the components did you use? BDE or ADO?
0
 

Author Comment

by:ws1999
ID: 6469247
hi,Motaz

i use BDE to access database
0
Live: Real-Time Solutions, Start Here

Receive instant 1:1 support from technology experts, using our real-time conversation and whiteboard interface. Your first 5 minutes are always free.

 
LVL 7

Expert Comment

by:Motaz
ID: 6469640
Then, no problem, it will work
0
 

Expert Comment

by:amp072397
ID: 6789174
ws1999:

You have many open questions to which you must return:

http://www.experts-exchange.com/jsp/qShow.jsp?ta=msaccess&qid=20264790
http://www.experts-exchange.com/jsp/qShow.jsp?ta=delphi&qid=20256743
http://www.experts-exchange.com/jsp/qShow.jsp?ta=delphi&qid=20250343
http://www.experts-exchange.com/jsp/qShow.jsp?ta=delphi&qid=20249986
http://www.experts-exchange.com/jsp/qShow.jsp?ta=delphi&qid=20187323
http://www.experts-exchange.com/jsp/qShow.jsp?ta=delphi&qid=20184015
http://www.experts-exchange.com/jsp/qShow.jsp?ta=delphi&qid=20181707
http://www.experts-exchange.com/jsp/qShow.jsp?ta=delphi&qid=20180448
http://www.experts-exchange.com/jsp/qShow.jsp?ta=delphi&qid=20169990
http://www.experts-exchange.com/jsp/qShow.jsp?ta=delphi&qid=11401958
http://www.experts-exchange.com/jsp/qShow.jsp?ta=java&qid=20230693
http://www.experts-exchange.com/jsp/qShow.jsp?ta=java&qid=20194172
http://www.experts-exchange.com/jsp/qShow.jsp?ta=java&qid=20187856
http://www.experts-exchange.com/jsp/qShow.jsp?ta=java&qid=20187852
http://www.experts-exchange.com/jsp/qShow.jsp?ta=java&qid=20187466
http://www.experts-exchange.com/jsp/qShow.jsp?ta=java&qid=20182301
http://www.experts-exchange.com/jsp/qShow.jsp?ta=java&qid=20182182
http://www.experts-exchange.com/jsp/qShow.jsp?ta=java&qid=20181487
http://www.experts-exchange.com/jsp/qShow.jsp?ta=java&qid=20181301
http://www.experts-exchange.com/jsp/qShow.jsp?ta=java&qid=20180787
http://www.experts-exchange.com/jsp/qShow.jsp?ta=java&qid=20180436
http://www.experts-exchange.com/jsp/qShow.jsp?ta=java&qid=20172201
http://www.experts-exchange.com/jsp/qShow.jsp?ta=java&qid=20153303

To assist you in your cleanup, I'm providing the following guidelines:

1.  Stay active in your questions and provide feedback whenever possible. Likewise, when feedback has not been provided by the experts, commenting again makes them receive an email notification, and they may provide you with further information. Experts have no other method of searching for questions in which they have commented, except manually.

2.  Award points by hitting the Accept Comment As Answer button located above and to the left of that expert's comment.

3.  When grading, be sure to read:
http://www.experts-exchange.com/jsp/cmtyQuestAnswer.jsp#3
to ensure that you understand the grading system here at EE. If you grade less than an A, you must explain why.

4.  Questions that were not helpful to you should be PAQ'd (stored in the database for their valuable content?even if not valuable to you) or deleted. To PAQ or delete a question, you must first post your intent in that question to make the experts aware. Then, if no experts object after three full days, you can post a zero-point question at community support to request deletion or PAQ. Please include the link(s) to the question(s).
CS:  http://www.experts-exchange.com/jsp/qList.jsp?ta=commspt
At that point, a moderator can refund your points and PAQ or delete the question for you. The delete button does not work.

5.  If you fail to respond to this cleanup request, I must report you to the Community Support Administrator for further action.

Our intent is to get the questions cleaned up, and not to embarrass or shame anyone. If you have any questions or need further assistance at all, feel free to ask me in this question or post a zero-point question at CS. We are very happy to help you in this task!


thanks!
amp
community support moderator

2/8
0
 
LVL 1

Expert Comment

by:Moondancer
ID: 6863432
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).
2. Close the question if the information was not useful to you. You must tell the participants why you wish to do this, and allow for Expert response.
3. Ask Community Support to help split points between participating experts, or just comment here with details and we'll respond with the process.
4. Delete the question. Again, please comment to advise the other participants why you wish to do this.

For special handling needs, please post a zero point question in the link below and include the question QID/link(s) that it regards.
http://www.experts-exchange.com/jsp/qList.jsp?ta=commspt
 
Please click the Help Desk link on the left for Member Guidelines, Member Agreement and the Question/Answer process.  http://www.experts-exchange.com/jsp/cmtyHelpDesk.jsp

Please click you Member Profile to view your question history and keep them all current with updates as the collaboration effort continues, to track all your open and locked questions at this site.  If you are an EE Pro user, use the Power Search option to find them.

To view your open questions, please click the following link(s) and keep them all current with updates.
http://www.experts-exchange.com/questions/Q.11401958.html
http://www.experts-exchange.com/questions/Q.20169990.html
http://www.experts-exchange.com/questions/Q.20180448.html
http://www.experts-exchange.com/questions/Q.20181301.html
http://www.experts-exchange.com/questions/Q.20182182.html
http://www.experts-exchange.com/questions/Q.20184015.html
http://www.experts-exchange.com/questions/Q.20249986.html
http://www.experts-exchange.com/questions/Q.20264790.html
http://www.experts-exchange.com/questions/Q.20180436.html
http://www.experts-exchange.com/questions/Q.20187323.html


To view your locked questions, please click the following link(s) and evaluate the proposed answer.
http://www.experts-exchange.com/questions/Q.20181707.html

PLEASE DO NOT AWARD THE POINTS TO ME.  
 
------------>  EXPERTS:  Please leave any comments regarding your closing recommendations if this item remains inactive another seven (7) days.  Also, if you are interested in the cleanup effort, please click this link http://www.experts-exchange.com/jsp/qManageQuestion.jsp?ta=commspt&qid=20274643
 
Thank you everyone.
 
Moondancer
Moderator @ Experts Exchange

P.S.  For any year 2000 questions, special attention is needed to ensure the first correct response is awarded, since they are not in the comment date order, but rather in Member ID order.
0
 
LVL 1

Expert Comment

by:Moondancer
ID: 6887583
Finalized.
0

Featured Post

Gigs: Get Your Project Delivered by an Expert

Select from freelancers specializing in everything from database administration to programming, who have proven themselves as experts in their field. Hire the best, collaborate easily, pay securely and get projects done right.

Question has a verified solution.

If you are experiencing a similar issue, please ask a related question

Suggested Solutions

Title # Comments Views Activity
Comparing dates in Delphi. Greater than/ Less than 3 150
Delphi application Soap connection 5 103
find a node in VST 2 68
Create a path if not exists 7 77
This article explains how to create forms/units independent of other forms/units object names in a delphi project. Have you ever created a form for user input in a Delphi project and then had the need to have that same form in a other Delphi proj…
Many programs have tried to outwit PowerPoint in terms of technology and skill. These programs, however, still lack several characteristics that PowerPoint has possessed from the start. Here's why PowerPoint replacements won't entirely work for desi…
In this tutorial viewers will learn how to create blended and gradiated shapes in Illustrator using the blend tool Draw two shapes, one of them in a different color: Select both and create a blend by going to Object > Blend > Make: Blends can also b…
It’s easy to embed any of your public Prezi presentations on your website or social network to share with others. Learn how simple it is in this tutorial.

786 members asked questions and received personalized solutions in the past 7 days.

Join the community of 500,000 technology professionals and ask your questions.

Join & Ask a Question