I'm having a problem over here; I'm developing a DirectX 9 application, and for some reason, I can't figure the way to close the application completely. This has never happened to me, to be honest. I am using Application.Exit(), which doesn't seem to do anything - it just closes the form, but the program is still running. I have also tried End, but it throws a run-time error I can't seem to figure out.
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Form1 is a mdi container. It has a bunch of forms that can load inside of it as mdi children. If I close each open form inside the form1, and then click the red X at the top right, application exits fine.If I click the red X without closing the forms inside I get: An unhandled exception of type 'System.CannotUnloadAppDomainException' occurred in mscorlib.dll
Additional information: Error while unloading appdomain. (Exception from HRESULT: 0x80131015) However I can break from it. How do I get the application to not show that error? What must I do to fix those inside forms or close when the red x is clicked?
Ive seen that people use Form.Close() and Application.Close(), but what if I have many forms, and I may have forgot to close one of the forms correctly, is there a way to exit the application that actually checks to make sure that all the processes related to the program are closed first? I read on another forum that Application.Exit() is a bad way to close the program, and I found an example code of how to do it the right way, but Ive never found this anywhere else before.
View 3 RepliesI am wanting to close an application called SecondCut. How do I close this application when clicking on a button in another application.
View 2 RepliesI'm a college student just starting out programming in VB and am having a lot of trouble trying to get my drawing program to work. Currently i am using Microsoft Visual Basic 2008 Express Edition and whenever i try to debug my program the window it's supposed to run in is just a gray block. I'm not too sure if this is the right place in the forum to post this so if it is just let me know and ill move it. c:
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checking if an application is open and then closing it if it is... For an example, I'll use paint or notepad...
Does something like this work?
Dim myProcess As Process = New Process
myProcess.StartInfo.FileName = "PaintDotNet.exe"
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What is the best way to check if an application is open first? Struggling with that portion.
I have a form in a Pocket PC app that is set to be the Application form using:Application.Run(New frmMain())Somehow this form is getting closed for no reason while working on another form. No closing event is fired and nowhere in my code can you close the main form anyway. It is only closed by clicking the OK button at the top right of the window. When this is clicked, the user is prompted if he/she really wants to close the application. However, this is not occurring either.Basically, I am on another form which adds a new record to the database. After adding the record the gotFocus event is somehow called for frmMain. When the code in the gotFocus event reaches a reference to a control on the form, there is an exception that states that the object is disposed.
View 1 RepliesI am doing simple VB.net application w/ VS 2008 as my IDE.... How to keep UI settings after closing application??
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How can I fire off a function when it detects the console closing when using Environment.Exit(0)?
View 1 RepliesI'm getting really really frustrated with Word's Document Recovery Pane everytime I launch Word - it is making me very mad! I'm busy with a program which assists me with all my exams, right, now, with this program I'm launching each program associated with each exam. After the document / spreadsheet etc. is shown, I mark what I need to, then, I have a button which closes the current process, and returns me to my default application interface.
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Is there a way to detect (an API call) when task manager is shutting down an application? I don't want the application to be shut down! How can I prevent that?
View 17 RepliesI'm busy with a program which assists me with all my exams, right, now, with this program I'm launching each program associated with each exam. After the document / spreadsheet etc. is shown, I mark what I need to, then, I have a button which closes the current process, and returns me to my default application interface. All this is working, except for the .doc files, Word files.
Everytime I launch word, I get the Document recovery pane.
I've tried the following: [Code]
As a last resort ( and this doesn't work ), because WordDocument.close does not work, Word Application. Quit does not work! By, saying it doesn't work, means it closes everything, yes, but the Document Recovery PAne always shows up, and I can't understand why! Is there some way of disabling it completely
I know some will say it is not a good idea, I know, I know I really need to get rid of it.
I have a application I dont want to be close the only way iI want it to close it by the button I have is there away to disable alt f4?
View 2 RepliesHow can I ensure an application is fully closed when the user selects the close window X at the top of the form. It appears to just close the current form by default which is leaving the program still loaded in memory when the user thinks they have closed it. I have tried capturing the close and running application.exit but this closes the whole application even when I only want the current form closed.
View 10 RepliesI have an app that is on a network drive. Around 100 people will be using the app.
Right now, I have 2 people testing it. They found a couple of bugs, I fixed them, and made the changes.
However, before I could update the app, they had to close it because I can't delete a file that is in use.
how I might prompt the user that the app will be closing in "x" amount of seconds for updating?
I just did some analysis by using a global function which is called GetCallingMethod in my case.
Mostly it works great. But some cases the application is blocked. It is blocked when closing the application. When going to "pause" in Visual Studio, it stays on the new StackTrace line forever.
In my application I am using third party references, multithreading and several classes. But all that should not be a problem and should not lock the tracer class as far as I imagine. I am using Visual Studio 2010 Ultimate in this case.
This line will never be left in development area. Application will is frozen. Try/Catch will not force the procedure.
I keep receiving an "Access violation at address xxxxxx. Write of address xxxxxx." error when i close my MDI form (and hence my application).However this error only occurs after i have created a new child form.
I have stepped through the code and found that the exception is being thrown in the Settings.Designer file (Namespace My module). This is the chunk of code that throws the error[code]...
I am developing a simple application in VB10 that uses ADO.net to store data in an Access database, and gets input via a serial port RS232. It works well, but is not fully debugged. Unfortunately, a problem has recently started where as soon as i close the program I get a blue screen. Makes it hard to debug. The solution does not even have to have run; it just has to have been loaded and then exit VB10. The blue screen aslo happens to most of the other example solutions that I have downloaded.
Questions:
1)How do you capture the STOP error codes (probably stupid question)?
2) Is there an easy solution that rings a bell? My IT support is trying but not getting anywhere. Have to believe it is hardware related, but the hard drive checks out with testing.
I've made a Windows Forms Application that runs fine. It has some buttons that open child forms, which can simply close again without any problem. As I need the form to be in a dll, I changed the application type to a class library and added an extra project containing an exe-file that only references the main form in the dll and shows it. So far so good...
The main form is basically a tabcontrol with a bunch of controls, buttons among others. Five buttons on different tabs use the same handler to open a child form. When I click the button on the first tab everything works fine. The form opens and when it closes, only the child closes. When I click any of the buttons on the other tabs, the child form opens and when it closes again, both the child and the main form close...
I am stumped, especially since all buttons use the same code to open the child form and everything appears to be completely identical, yet the results are not. Below I have pasted the code that opens the main and child forms. I am undoubtedly not looking in the right place, but I also have no idea where to look anymore, let alone what to look for...
The code opening the main form:
Public Sub StartProgram()
'Load the form and show it
Dim frmProgram As frmMain = New frmMain
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I have a small application (in VB.NET 2008) which gives the user the option to open a PDF document. This document is stored on a mapped network drive and is loaded in to the AxAcroPDF Control.
When closing my application I get the following message
The instruction at "0x0700609c" referenced memory at "0x00000014". The memory could not be read.
I've been google-ing this error message, but seen only a lot of problems, but no solutions.
I also tried using the WebBrowser Control, but this gives the same error.
I need to reload the form of my application. The application has only one form vb.net 2005. I need a button that will call the page_load event so I can restart and reload all my settings. basically I need to call the Sub private Page_load event().I just need to force the reloading of the form without having to close it and reopen it.This is the code which I need to reload:
Public Sub Form1_Load(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles MyBase.Load
For Each URLname As String In My.Settings.URLtoTrackCollection
URLtoTrack.Add(URLname)
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I have created an application in VB2010 and deployed it such a way that it will start automatically when a user logins.I want user to restrict closing the application, so i disabled the close button also in the forms.But still users are able to close the application from Task Manager. Is there any option to restrict application closing even from task manager...?
View 19 RepliesI have an application with serial port datareceived event. My instrument sends me aprox.00bytes every 1 second. Which I then process and update few textboxes on the main formRecently my application started crashing if I press close button.I am guessing form_closing closes serialport at the same time datareceived event triggers in which the sp1.bytestoread causes the crash.1. I added synclock in datareceived and in form_closing.Within synclock in form_closing I removed datareceived handler.
View 8 RepliesHow can I stop my application quitting until a backgroundworker has finished? Its an updater, so basically I want the form to hide until the download is finished, and then exit.I've tried to make a setting to tell the app when it is still downloading, and on form closing check this variable, but it won't work. For some reason it still quits!The update window is in a separate form to the main form, so the user clicks 'Finish', the update form closes and the main form stays open.[code]
View 5 RepliesI have a vb.net 2.0 winforms application. When I open another application (like calculator) have the focus to it and try to close my application the screen freeze and I have to use ctrl + alt + del to get it to refresh.
View 1 RepliesI was wondering if you should dispose undisposed resources before closing your application. Maybe it's not necessary to do this because closing your application automatically takes care of this.
View 2 Repliesmy application will remain open after closing every form. This is a recent issue in previous versions my application would close. I call dispose(true) on all form closing/closed events. (some forms require it on closing instead of close because of some custom made classes.)?
View 5 RepliesDim frm As Form
For Each frm In Forms
Set frm = Nothing
Next frm
The above code is what I used in VB6 to close all forms associated with my programs before my program closed. I have been searching for information on how to make sure all forms are closed when closing a VB2008 program.
I have seen info on using the Project Property Shutdown mode When startup form closes and I currently have this set.
Is this all that is really necessary? Will the garbage disposal close everything else to free up RAM?
Also, if I have several forms open and want to close all from the main form without closing each one individually, what is the best approach? Is there a collection like in VB6, go through the collection, compare it to the name of the main form and close it if it is not the main form?
Attach and detach sql 2005 database
View 1 RepliesI have 2 forms. I want to close Form1 without closing the entire application but it doesnt work. It closes the whole application even though i say Form2.show()[code]When it reaches the End Sub then it closes the application.
View 6 Replies