is there "rules" as to how to close programs writting in vb.net(2008)? I've migrated to dot net from vb6 and have rewritten some of my programs in the new language, but I've discovered a problem, since using the new programs if you try and close the machine down (Windows XP) the pc just hangs until I use the task manager and kill my programs.
View 1 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?
have you of any ideas in why does my software in vb 2010 still exist in the task manager (process tab), after i closed the program? i noticed it when i want to delete the .exe file.
View 10 RepliesI am trying to close Form1 and then open Form2, but when i do it closes the whole program.I have tried to just hide Form1, but then i can't close the program and I have tried this method too but could not get it to work?
View 2 RepliesHow can i prevent from closing a program even with the task maneger?
View 39 RepliesI made a program with Visual Studio Express 2008, compiled for .Net Framework 3.5
I transferred the .exe and the other 2 files to my brothers laptop who also uses Windows 7, .Net Framework 3.5.
Every time I run the file it says "Windows Application has stopped working..."
However, I run it fine on my PC and it is also Windows 7, .Net Framework 3.5
Can anyone else think of a reason the program won't work on my brothers laptop?
This is my first VB program, but how do i make the command prompt stay ?
Option Strict Off
Option Explicit On
Module Module1
[code].....
When I close my compiled application, it will always hang for a few seconds before closing. It isn't something to do with my PC, I've got a quad core with 4GB of RAM -[code]...
View 4 RepliesI am trying to write a code that lets you open a text file and display it in a text box. I need to make it so that when the user tries to close the program it will ask them if they want to save any changes made to it.
View 3 RepliesI am trying debug my program on a Windows 7 machine. My program reads a txt file using TextFieldParser
I get an error message when I try to open a file
Could not find file C:UsersBillDesktopprogram name TextFieldParserinDebugFileName.txt.ReadColumns
Code
Dim safeFileName As String = IO.Path.GetFileName(Me.OpenFileDialog1.FileName)
Using myReader As New Microsoft.VisualBasic.FileIO.TextFieldParser(safeFileName)
It doesnt get past the second line, which tells me there is something wrong with the way i am getting the file??
I am not getting the location of the file just the file name
I loaded a Lightswitch program on an XP machine and after load all of the updates it runs fine. I tried to load it on another XP machine with all of the updates loaded and it looks like it installs and it shows up under programs but it looks like it starts to run but then nothing happens, there are no new processes running.
View 1 RepliesI'm trying to make a slot machine program. This procedure that I'm trying to do will assign a name to 3 randomly generated numbers. For some reason I'm getting a conversion error saying that it cant convert the integer to a string. I tried cstr() as well but the problem persisted
[Code]...
I made an application to give to my friends as practice for my learning, so the app works fine with XP but not on a Vista 64 bit machine. Will the app need re-coding? The app is used as a game mod, so it writes to process.
View 2 RepliesFrustration has officially set in. This is my first post here, and to be very honest, I'll admit that I'm a newbie VB programmer as well. I guess that's why I'm posting here, in hopes you super-porgrammer types might be able to help.
I've written a smallish VB program with 2010 express... the code uses some text files to gather various lists of numbers ( as part of a manufacturing Bill of Material ) that assiciate to PDF files of the same name. The intent was simply to view and print the gathered existing PDF files.
I have the program mostly working the way I want ( at home ), but when I bring it to work, it fails to open.
My home PC is a 32Bit Windows Vista Machine with Adobe 10.1 viewer installed.My Work PC is a 64 Bit Windows 7 Machine also with Adobe 10.1. I've sent the .sln and code to a buddy who is also running a 64bit Win 7 machine very similar to what I have... he is able to run the program. I've sent the same thing to my work pc and tried to run it. I get some crazy HRESULT error I can't make heads or tails out of... remember I'm a newbie.
I will happily post code if you guys are interested, but I believe that it isn't code related. What kind of things MIGHT i try to look for on my work pc that would cause this simple program Not to function? I've brought other programs I've written to work without problem. But this one has me stumped.
Other things I've tried:
1) uninstall and re-install Adobe... ( no change )
2) written a super small adobe viewer program at work... ( works )
3) tried to comple as "any CPU", "x86", and "x64"... ( does not work )
4) bring .sln & code files to compile and run at work... ( does not work, HRESULT err )
I'm lending a copy of my .exe on a memory stick and because I dont completely trust them, , I would like to build in a function that as soon as my app has finished doing what its doing And the big red X is hit it will delete itself, but my problem is that i cant put the deletetion in the form closing because the prog is still running, so what should I do? Is there a way that I can get the app to close as soon as the dedicated task is complete, It will remove itself from the memory stick but if the X is hit before the process is complete the then the prog will remain.
View 14 Repliesdoes anyone know how I can stop a user from closing the program if they click the "X" button of the Controlbox, but allow them to close the program by clicking another button? I don't want to make the "X" button invisible. I still want it to be there.
View 1 RepliesWhy does my vb.net win-forms app continue to run after press the Windows Close button (red X).Here is the code from the form closing event[code]...
View 11 RepliesI have a VB.Net 2008 app that I have converted from VB6 which reads data from a weight scale connected to a serial port. I am able to read the received data and display it on the screen, but when I go to Stop the reading and attempt to close the serial port, the app hangs.
Private Delegate Sub ShowWeight(ByVal tWeight As String)
Private Sub comScale_DataReceived(ByVal sender As Object, ByVal e
As System.IO.Ports.SerialDataReceivedEventArgs) Handles
[Code]....
Hi guys. Our application got this exception after it was closed... I was wondering how we can solve this...
View 12 Replies'This is the event that is fired as the application is closing, whether it 'be from a close button in the application or from the user 'clicking the X in the upper right hand corner
[Code]....
Im trying to make an application that when you press X, the program gets put in system tray. But i have like no idea how i'm suppost to do that, so did a search on google and found this code. Only VB2010 (what i use) doesn't like the fourth line. Can anybody give me a quick tutorial on this, and make this work in VB 2010?
I need to disable the escape key on loading my program and enable on closing.Although I have searched vb 2008 books and forums I cant find any reference.
View 9 RepliesStop program closing if a special form is running?
View 8 RepliesI wrote a program using VB 2005 Express edition using a computer with windows xp us edition. the program run fine on al machines here in San Diego but it gets a .net framework error on a computer in the Netherlands with a windows Xp Dutch edition.
View 14 RepliesI have some programs written in VB2010 using functions from a DLL. I have compiled and run these programs on a 32bit XP computer and a 32bit Win7 computer and have had no problems accessing the DLL.I have published an installation of these programs and tried running the install on a 64bit Win7 machine and the installation is performed correctly. It installs the programs and copies the required DLL into the same folder. the problem is that whenever I run the software and try to access the DLL I get errors.
The error says something like:
An unhandled exception has occurred in your application. An attempt was made to load a program with an incorrect format. (Exception from HRESULT:0x8007000B)
If I click past it the software runs and all of the forms are loaded properly, but anytime in the software if I try to access the DLL I get the same error.I am declaring functions in the DLL like this:
Public Declare Function OpenDriver Lib "OP815M.DLL" (ByVal handle_Renamed As Integer) As Integer
I have also tried placing the DLL in the system32 directory and also the sysWOW64 directory and that did not help as well.I do recall that hardware drivers need to be properly signed and pass the Microsoft Logo testing. Must I get the DLLs I am using properly signed?
Edit: Also it might be fair to mention that I have used the DLL with another program written in C, which would run in the DOS command line in Windows and it correctly accesses the DLL on a 64bit machine, but just when run from the DOS command line in windows.
Say a machine has two seperate IP's. I am running a little test program that connects to an outside piece of hardware that has it's own IP. I receive data from that hardware. I want the same little program assigned to the two seperate IPs on my local machine to get the same data from the hardware. How can this be done?I am receiving data just fine but I am not seeing how to tie the program to a specific IP on the local machine. As soon as I run another instance of my program, not data is received on the second instance.For example: I have a program running on a machine. I want two instances of that program, each on it's own ip
Instance 1: 192.168.1.240
Instance 2: 192.168.1.241
I want both instances to listen for data coming from 192.168.1.50
This is a generic example of what needs to happen. I need to know how to define the local IP's the UDPClient is running on.
how do I deploy a SQL server database program to a machine thats I don't know the name of the machine. tried using "server (local)" but still.
View 6 RepliesForm1 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?
why when I am Closing the program by clicking on the X button, the NotifyIcon did not closed? it just stay there until I move my mouse over it....
View 5 RepliesHow to make a chat program. Well I just copied code in and the program worked. I can send a message to the server and it sends it back just fine. But I can only send a message once. If I try to send another message I get an error and it says this "A first chance exception of type 'System.Net.Sockets.SocketException' occurred in System.dll" then it "No connection could be made because the target machine actively refused it 127.0.0.1:500".
Here is the link to the tutorial and code: [URL]
I'm trying to execute a program on a remote machine using this code
Dim objProcess As New System.Diagnostics.Process
objProcess.StartInfo.FileName = "cmd.exe"
objProcess.StartInfo.Arguments = " /c PSExec /accepteula \NTAPPMTMIGL01 -u $AdminUsrLocal -p tjdsi44 c:winntMicrosoft.NETFrameworkv2.0.50727gacutil.exe"
[code]....
If I use it, it works since I'm an admin but if someone else use it, I got "The system cannot find the file specified."Is there any other program I can use that can impersonate, I've already tried xcmd.exe but it doesm't work either.