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.NET Forum / .NET Framework / Compact Framework / April 2006Application.exit
Hello all, I have a command button on a form that serves as a exit for the application. The only code in the button is Application.exit. At run time the button when tapped locks the device and the form freezes. Any ideas?? Thank you chuck Have you got any other threads running? Rather than calling Application.Exit, make sure all your other threads have terminated and then close the main form. Cheers Daniel -- http://www.danielmoth.com/Blog/ > Hello all, > I have a command button on a form that serves as a exit for the [quoted text clipped - 5 lines] > > chuck My guess is you have a worker thread doing something. -Chris > Hello all, > I have a command button on a form that serves as a exit for the [quoted text clipped - 5 lines] > > chuck Well, if only your application is launch, it is normal because when you type your button exit (Application.Exit) your application stop refresh itself because it is ended and as no other application form try to repaint itself, you see your form and it sounds like freezes. So i think it is normal, i have the same thing with my device.. If you launch the Explorer.exe, under your applicatiin, you will see your application disapear.. Jérôme > Hello all, > I have a command button on a form that serves as a exit for the application. [quoted text clipped - 3 lines] > > chuck Thus , with Application.Exit I can quit my program. How to call explorer? Jerome schreef: > Well, if only your application is launch, it is normal because when you type > your button exit (Application.Exit) your application stop refresh itself [quoted text clipped - 12 lines] >> >> chuck Just use the System.Diagnostics.Process to launch explorer.exe. This assumes you don't already have a shell running. -Chris > Thus , > [quoted text clipped - 20 lines] >>> >>> chuck Chuck, If you need further help, please post here rather than directly emailing. It allows the answer to potentially help others, plus I have a strict rule on answering direct email because if I don't I get too much. At any rate, if you're creating any worker threads (or creating objects that create them) then you must ensure the workers are killed before exiting. You don't give us much detail, like CF version, etc. so we can't offer much more than that. -Chris > Hello all, > I have a command button on a form that serves as a exit for the [quoted text clipped - 5 lines] > > chuck Hi Chris Sorry about the direct reply I clicked "Reply" not "Reply Group" I am using VS2005 CF 2.0 The targeted device is a symbol PPT 8846 running PPC 2003 I have the symbol SMDK(ver 1.1) installed As I mentioned before the topic of threads has not been anyting that I have been dealing with on a routine basis. ****This is where I see 1 of the threads created Public Function InitReader() As Boolean If Not (Me.MyReader Is Nothing) Then Return False End If Me.MyReader = New Symbol.Barcode.Reader Me.MyReaderData = New Symbol.Barcode.ReaderData Symbol.Barcode.ReaderDataTypes.Text, _ Symbol.Barcode.ReaderDataLengths.DefaultText) Me.MyEventHandler = New System.EventHandler(AddressOf MyReader_ReadNotify) ****AddHandler Me.Activated, New EventHandler(AddressOf frmMainForm_Activated) AddHandler Me.Deactivate, New EventHandler(AddressOf frmMainForm_Deactivate) Me.MyReader.Actions.Enable() Return True End Function The other times occur when I call a function that pulls the serial number from the device Any help you can offer is greatly appreicated Thanks again chuck > Chuck, > [quoted text clipped - 13 lines] > > application. > > The only code in the button is Application.exit. At run time the button > > when > > tapped locks the device and the form freezes. Any ideas?? > > Thank you > > > > chuck I bet the barcode reader control spawns a separate thread. You should destroy them before exiting, or better yet, exit the app the usual way by closing the form instance passed to Application.Run. -Chris > Hi Chris > [quoted text clipped - 63 lines] >> > >> > chuck Hi Chris This is what I am doing Application.run(frmMain) I have 3 exit buttons (3 different panels) each button contains frmMain.close The form closes and it appears that the app is gone but if I try to get back in to the app nothing happens it will not start and I need to soft reset the device. chuck > I bet the barcode reader control spawns a separate thread. You should > destroy them before exiting, or better yet, exit the app the usual way by [quoted text clipped - 69 lines] > >> > > >> > chuck Yep, it's definitely a thread. Try explicitly destroying and Disposing (if they expose it) all of the barcode objects when you close the form. -Chris > Hi Chris > [quoted text clipped - 95 lines] >> >> > >> >> > chuck Hi, You should have code like this: Me.BarcodeReader1.Stop() Me.BarcodeReader1.Dispose() Me.Close() or replace Me with this and add semicolons (C#). Dick  SignatureRichard Grier, MVP Hard & Software Author of Visual Basic Programmer's Guide to Serial Communications, Fourth Edition, ISBN 1-890422-28-2 (391 pages, includes CD-ROM). July 2004, Revised March 2006. See www.hardandsoftware.net for details and contact information. Free MagazinesGet these publications absolutely FREE for up to 12 months. There are no hidden fees and no obligation. Simply choose a title, complete the application form and submit it. Read more ...
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