Go Premium for a chance to win a PS4. Enter to Win

x
?
Solved

Handling application exit event

Posted on 2006-11-15
2
Medium Priority
?
748 Views
Last Modified: 2011-10-03

 Hi,
   I am developing a windows MDI appln using vb.net 2003.
   Is there anyway to handle the applicatioin.exit event . My reason is under any circumstance    when the appln is ended (possibly inculding from the task manager), I need to run a final routine to set some registry values.  How can I do this ?

  thanking you
  Sam
0
Comment
Question by:sgs1970
2 Comments
 
LVL 13

Accepted Solution

by:
newyuppie earned 375 total points
ID: 17947259
read this MSDN documentation:
http://msdn2.microsoft.com/en-us/library/system.windows.forms.application.applicationexit.aspx

basically declare something like this:
' Handle the ApplicationExit event to know when the application is exiting.
    AddHandler Application.ApplicationExit, AddressOf OnApplicationExit

Private Sub OnApplicationExit(ByVal sender As Object, ByVal e As EventArgs)
    ' When the application is exiting, write the application data to the
    ' user file and close it.
    WriteFormDataToFile()

    Try
        ' Ignore any errors that might occur while closing the file handle.
        userData.Close()
    Catch
    End Try
End Sub
0
 
LVL 48

Expert Comment

by:AlexFM
ID: 17947276
AddHandler Application.ApplicationExit, AddressOf OnApplicationExit

Private Sub OnApplicationExit(ByVal sender As Object, ByVal e As EventArgs)
    ' ...
End Sub

However, I don't think that this function will be called when application is killed by Task Manager from Processes tab. Task Manager doesn' give any chance to application to execute any code.

There are two other places to make critical operations - this doesn't cover all possible situations for 100%, but can improve your program. If program has main window, handle its Closing event. This allows to execute some code when program is closed by user and from Applications tab of Task Manager.  First is tries to close program by "gentle" way, and only then kills it.
Second place is SystemEvents.SessionEnding Event. Add handler to it, it will be called when Windows shuts down or logs off while your application is running.
0

Featured Post

What does it mean to be "Always On"?

Is your cloud always on? With an Always On cloud you won't have to worry about downtime for maintenance or software application code updates, ensuring that your bottom line isn't affected.

Question has a verified solution.

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

Since .Net 2.0, Visual Basic has made it easy to create a splash screen and set it via the "Splash Screen" drop down in the Project Properties.  A splash screen set in this manner is automatically created, displayed and closed by the framework itsel…
Calculating holidays and working days is a function that is often needed yet it is not one found within the Framework. This article presents one approach to building a working-day calculator for use in .NET.
Loops Section Overview
Despite its rising prevalence in the business world, "the cloud" is still misunderstood. Some companies still believe common misconceptions about lack of security in cloud solutions and many misuses of cloud storage options still occur every day. …
Suggested Courses

885 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