how to update exe applicatio from internet ?

Posted on 2016-11-16
Last Modified: 2016-11-16
i am using this procedure to update my application from internet  , But i got problem i already can download the new exe ,, but i wanted to auto replace the old application with the new updated one  i cannot do that while the exe application is running !

the approach that i am trying to achieve is when i run my application and download the update auto restart the application with the new update one  , i don't want to duplicated Files like rename and leave the old version etc  

procedure TForm1.DownLoadNewVersion1Click(Sender: TObject);
  apath: string;
  new: Integer;
  // This is the exact code from my application
  apath           := GetPathPath;
  Gauge1.Progress := 0;
  StatusBar1.SimplePanel := True;
  StatusBar1.SimpleText := 'Connecting to';
  Gauge1.Progress := 20;
  if DownloadFile('', PChar(apath) + '/update.ini') then
    Gauge1.Progress := 50;
    StatusBAr1.SimplePanel := True;
    StatusBar1.SimpleText := 'Checking for newer versions...';
    vernfo := TiniFile.Create(GetPathPath + '/update.ini');
    new    := vernfo.ReadInteger('version', 'wsc', 7);
    if (old = new) then
      StatusBar1.SimplePanel := True;
      StatusBar1.SimpleText  := 'No new version detected';
      Gauge1.Progress        := 100;
    else if DownloadFile('',
      PChar(apath) + '/winsafe.exe') then
      ShowMessage('Update succeseful');
      Gauge1.Progress := 100;
      winsc           := TIniFile.Create(ChangeFileExt(Application.ExeName, '.ini'));
      winsc.WriteInteger('wsc', 'vernfo', new);
      MessageDlg('A new version has appeard but it requires a second install',
        mtInformation, [mbOK], 0);
    StatusBar1.SimplePanel := True;
    StatusBar1.SimpleText  := 'Failed to connect probably a internet problem';
    Gauge1.Progress        := 0;

Open in new window

Question by:dolphin King
  • 3
  • 2
LVL 35

Expert Comment

ID: 41889562
That's why all major software releases (think Google Chrome, Adobe Reader etc) use a separate update modules. It's just not possible to update yourself.

Author Comment

by:dolphin King
ID: 41889675
so you suggest to create a luncher to the orginal exe that need to be updated ?
LVL 35

Accepted Solution

Kimputer earned 500 total points
ID: 41889682
I suggest you start the update module (separate .exe) to update the main program (have it close the main app if it's still open).
PRTG Network Monitor: Intuitive Network Monitoring

Network Monitoring is essential to ensure that computer systems and network devices are running. Use PRTG to monitor LANs, servers, websites, applications and devices, bandwidth, virtual environments, remote systems, IoT, and many more. PRTG is easy to set up & use.


Author Comment

by:dolphin King
ID: 41889847
i will take your suggestion as accepted answer how ever i was thinking about something else ...
LVL 37

Expert Comment

by:Geert Gruwez
ID: 41890289
Letting an exe update itself doesnt work.
There is always a second app required which can need elevated privs.

You can lift someone except yourself

Author Comment

by:dolphin King
ID: 41890502
yes i was thinking flat . i did secondary app

Featured Post

Best Practices: Disaster Recovery Testing

Besides backup, any IT division should have a disaster recovery plan. You will find a few tips below relating to the development of such a plan and to what issues one should pay special attention in the course of backup planning.

Question has a verified solution.

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

Whether you've completed a degree in computer sciences or you're a self-taught programmer, writing your first lines of code in the real world is always a challenge. Here are some of the most common pitfalls for new programmers.
In this post we will learn how to connect and configure Android Device (Smartphone etc.) with Android Studio. After that we will run a simple Hello World Program.
In this fourth video of the Xpdf series, we discuss and demonstrate the PDFinfo utility, which retrieves the contents of a PDF's Info Dictionary, as well as some other information, including the page count. We show how to isolate the page count in a…
In this seventh video of the Xpdf series, we discuss and demonstrate the PDFfonts utility, which lists all the fonts used in a PDF file. It does this via a command line interface, making it suitable for use in programs, scripts, batch files — any pl…

803 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