How Could Application Form In Vb Be Closing By Itself
Feb 24, 2012
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.
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Feb 8, 2012
Alright, I have a vb6 LEGACY application and new Functionality (Form) written in c#. I have a VB.NET COM Class as a wrapper. I can launch the .NET Form just fine. THe problem I am having is closing the .net form from vb6.
Example:
In VB6, I have something like this:
CODE:
But it does not work becuase frmViewer is Nothing for some reason. how I should close the .NET form that was launched from VB6?
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Jun 11, 2012
How 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.
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Aug 16, 2011
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
[Code].....
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Jun 12, 2009
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)
[code]....
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May 3, 2010
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?
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Jun 4, 2010
Dim 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?
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Apr 27, 2011
I have the following code to close a form which is a child. The problem is that when it closes, it closes the MDI parent too.
Private Sub frmTransaction_Closing(ByVal sender As Object, ByVal e As System.ComponentModel.CancelEventArgs) Handles MyBase.Closing
If ListView1.Items.Count >= 1 Then
[Code]....
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Jun 2, 2012
I am wanting to close an application called SecondCut. How do I close this application when clicking on a button in another application.
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Apr 2, 2012
I have a parent form that has a list of items and each item has a unique ID. The user can open one or many of the items in a child form (it is set up in a tabbed MDI), but it can only open one instance of each item at a time.
In the parent form, I was going to make a collection (or something like that, maybe there is a better way) to keep track of which items are open in the child forms. I need to know when each child is closed so that it can be removed from the collection and reopened at a later time. I was thinking that when the child form closes, it somehow does something (like raise an event) that tells the parent form to remove the unique ID from the list of current open child forms.
My questions are, is this a good way to do this and I am pretty sure I would use the form closed event in the child form to update that parent form, but as well, I didn't know if this is the best way of handling it.
If raising the event is a good way, are some examples on how to do it out there? I found some for controls, but not while the form is closing/closed.
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Nov 12, 2011
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.
[Code]...
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Aug 15, 2011
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"
[Code]....
What is the best way to check if an application is open first? Struggling with that portion.
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Oct 20, 2009
I am doing simple VB.net application w/ VS 2008 as my IDE.... How to keep UI settings after closing application??
[Code]...
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Apr 11, 2012
How can I fire off a function when it detects the console closing when using Environment.Exit(0)?
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Jun 30, 2009
I'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.
[Code]...
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Jun 11, 2010
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?
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Jun 30, 2009
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. 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.
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May 7, 2009
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?
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Feb 28, 2011
I 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?
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Apr 28, 2010
I am working on a project that has the user building scrapbook pages through several different forms. When the user selects something a presses a button I have the information about the selection load to a list box which is on a CheckoutForm. One of the options I have is for the user to save what they have made (this includes the information in the list boxes) and return to a previous form to build another page. I have been trying to use the Me.Close() but it does not save the information and using Me.Hide() displays the wrong elements on the forms.
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Dec 29, 2010
i have a parent form which is having a grid view. In the KeyDown event of the grid view i am calling a child form. If the user closed the child form, my application should close both the parent form and child form. What i have done is, i declared a boolean in the child form and passed the boolean value to parent. May be the code below will give the picture of what i am trying to do.
Private Sub gvJournalEntryDet_KeyDown(ByVal sender As Object, ByVal e As System.Windows.Forms.KeyEventArgs) Handles gvJournalEntryDet.KeyDown
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Jun 22, 2010
I have a unique challenge that I just cannot seem to get by...I have a form with a series of listboxes that allows the user to rename items in the listbox (I probably should be using a listview control instead). When the user right-clicks and selects rename from the context menu I show a simple form with two labels & text boxes showing the selected list box item in one textbox...the other is blank waiting for the user to enter a new name. What I'd like to do is when the user closes the rename form, the information is passed back to the calling form and a listbox refresh method is fired to show the changed name. Couple question:
First, is there an easier method to implement the renaming concept in a listbox (probably should be using a list view) i.e., have I overcomplicated things?
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Aug 29, 2011
I have 2 forms. When a user clicks something on form1, form2 pops up. After user is done with form2 and closes it (where the dataset is updated), I want form1 to "reload" the dataset to reflect changes made in form2.
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Sep 12, 2011
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.
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Aug 12, 2010
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]...
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Mar 8, 2012
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.
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Jan 14, 2009
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.
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Oct 23, 2011
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...?
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Jul 8, 2011
I 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.
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Jul 25, 2010
How 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]
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