Terminate A Program Immediately From Try Catch?

Jan 19, 2010

I am trying to end a program immediately when a critical exception is caught.  But I am finding that code after my Try/Catch block is executing even though the code withing the Catch block is executing, and that Catch code is calling Me.Close. 

I suspect it has something to do with background .net threads or something, but I have no clue how to deal with those kinds of issues.  How can I stop the program as quickly as possible?  If code after my Catch executes, it will (and does) throw lots of uncaught exceptions later. Currently, it is not feasible for me to try to catch all the other exceptions.  I just want to report an error and end the program.In my form load routine, I create and set up a number of objects and arrays by calling various subroutines.The success of most of the subroutines depends on the sucess of three subs in particular, which are called early on. If one of those three fails, there will undoubtedly be a number of hard to trap exceptions later on in the load routine.



'abort' (terminate Immediately) A Form Screen In A Windows Form Application Running Under 'local' Environment?

May 30, 2012

FormA calls DialogB where user cancels DialogB which exits via ForceTermination(), see insert.Caller FormA check for DialogResult not = OK, which it isn't, and I can see this in debug as Abort(3).However, the code continues merrily along its way until I get a 'null reference' error which I'm trying to avoid via Force Termination().This is caused by the user cancelling DialogB, a selection process to get a database (SQL) instance.[code]

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Thrown Custom Exception Is Immediately Caught In The Same Catch Block It Is Thrown From?

May 13, 2012

This may be a debugger issue, but here goes:I have this piece of code:

Private Function Connect() As Boolean
sessionBegun = False[code].....

My intention is to 'convert' the low level exception into something more meaningful, so I throw an exception of my own creation. I want this to bubble up to a place where I can handle it.However what is happening is my debugger breaks and tells me that an exception of type "QuickBooksConnectionException" was thrown.I know that, I just threw it, why are you catching it? From what I've read, this ought to work, and there doesn't appear to be an analogous Java throws keyword, so perhaps it is my debugger.

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Sep 11, 2011

I have a simple GUI form to hide / show / minimize / terminate / force terminate Processes. i can do all well but for show and hide i need the MainWindowHandle to show or hide it

So here is hide process code:

Dim Proc As New Process = Process.GetProcessesById(List.SelectedRows(0).Cells(1))
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If i try the same with show code:

Dim Proc As New Process = Process.GetProcessesById(List.SelectedRows(0).Cells(1))
Dim hwnd = Proc.MainWindowHandle

The MainWindowHandle become 0 cuz its hidden is there is any other way to get the MainWindowHandle of Process ?

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Oct 12, 2011

In certain error situations within my VB 2008 code, I need to quickly terminate the program. This should be simple, but I haven't been able to figure out how to do it.

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Feb 23, 2009

when i run any of my program this error is show to me i don't know why, "it said that the program will terminate OK".

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Jan 12, 2010

I've started a process through system.diagnostics .process.start("C:/process.exe")Now my question is, how can I terminate the same process in vb.net

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Oct 11, 2011

I'm trying to close down a program from within the constructor for the main form. I've tried Me.Close() but this gives an error: ObjectDisposedException was unhandled. Here's the details:

System.ObjectDisposedException was unhandled
Message=Cannot access a disposed object.
Object name: 'Form1'.


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Dec 6, 2010

I copied a project I wrote on my XP machine to my other computer with Windows 7 64-bit. When I run it through VS2008 it exits immediately. It does not run a single line of code. The exit code is 0. I need to post what else it says. But I did find a posting about this saying the path to the temp files may be wrong for it but he did not know how to change this. If I create a new peoject and put a command button on it, the program runs. So I was wondering if it is something like the temp files or something else. The machine runs a compiled .exe of the program from the XP machone when installed on the Windows 7 machine. So I do not think it is the program not being compatible.

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Application.Exit() Doesn't Terminate Program

Jan 20, 2010

I have just started a simple project in VB 2008 express (having previous experience (not much though) in VB6). At the moment I have only 1 form and when I click on the red x close button the form closes but the process is still running in task manager. I have the following code which I assumed would exit the program and terminate the process but it doesnt seem to work[code]...

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Terminate Code That Takes Long In Program?

Oct 25, 2010

How to terminate function/code (not entire page) when it takes some time, for example, more than 1 sec?[code]...

I found the command "Server.ScriptTimeou", but it stops the entire page instead of one command.

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Make The PDF File Be Immediately Released When Program Closes?

Feb 19, 2010

I have a VB program that displays a PDF file. When the program is closed it takes 30 seconds or so before AcroRd32 process releases the PDF file. In certain circumstances if the program is restarted with in this period, the PDF file does not display. The specific circumstances is that I have a second program (re)starting the program that displays the PDF file.

a) Make the PDF file be immediately released when my program closes

b) When the PDF file is loaded test that it properly loaded so that it can be reloaded if necessary.

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Forms :: Terminate Running Program Using Button In Form?

Apr 28, 2011

I have just built a full main menu for my pc game and need to terminate the running program using a button held within the form. I have built a button labeled exit and tried a couple of closing codes such as:

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When Attempt To Debug A Program In VB 08 The Black Screen Disappears Immediately?

Feb 17, 2010

when i attempt to debug a program in visual basic studio 08 the black screen dissapears immediatly and i cannot read anything that appears. not sure if it is an option or a bug, but it makes the system relatively useless.

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Mar 16, 2010

Is it possible to terminate a program from another program, Or maybe exchance a handler so it can close down itself when neccesary?

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Apr 30, 2009

i turn on my computer and appear this " Ixdn MsdMon.exe-fatal error CLR error: 80004005 the program will now terminate" and the computer runs very slow

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Application.Exit() & Environment.Exit(0) Don't Terminate A Program On Windows 7?

Jan 20, 2010

I'm developing a program using VB 2005.I've tried to use the following instructions to "kill" the application

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VS 2008 Catch ALL Errors Of The Program?

Jan 12, 2010

Is there a way to catch ALL errors of the program?

Purpose: The idea is to catch all the errors of the program, load errorform which basically just says "A Error Was Detected" (Which I have already designed). Then send a web request to a formmail.php file with the said error (which i have already done).

In short: I need a way to catch ALL errors, and get the error string that it gave.

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Jan 17, 2012

While running an application in the IDE, the program properly handles Try/Catch/End Try blocks.  This works fine for the most part, but is it possible to have errors generated in these blocks stop execution at the line with an error on encountering an error?


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May 6, 2011

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Mar 25, 2011

I have a program in VB.Net that receives mails from Outlook, extracts attachments and inserts the attachments into a table through a query. I would like to put the query/queries in a Try/Catch block, but cannot do so as Outlook exceptions cannot be caught, and it gives me an error, and unless I put a very specific exception, I cannot catch it. Is there a workaround?


Catch ex As Exception
End Try

Exception is underlined and when I hover on it, it says: "Catch cannot catch type 'Microsoft.Office.Interop.Outlook.Exception' because it is not in 'System.Exception' or a class that inherits from 'System.Exception'". This is affecting all my other code which I'd like to put into a Try/Catch block.

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Jun 19, 2012

The following code causes a "Warning" that Variable is used before value assigned.How do I restructure this Try/catch to eliminate error on the myreader.close command in the Catch part? Code appears to work fine but I dont like Warnings. [code]

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Button_click Event Will Not Stop Execute After Error Catch Using Try - Catch Statement

Apr 1, 2011

i have problem when i click a ADD button, there is one null value in the textbox .. so the try catch statemnt is to catch that null value error but after that the catch is success but the button click never stop excute the statemnt till the end of the button event.

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Nested Try...Catches - If An Exception Occurs In The 2nd Sub's Try...Catch, Which Catch Gets Excecuted?

Mar 4, 2009

I have this scenario: in a Sub I have a Try...Catch statement.Within that Try..Catch I call another sub.In that 2nd sub is also a Try...Catch.(see below for example).Now if an exception occurs in the 2nd sub's Try...Catch, which Catch gets excecuted? The 2nd one, the 1st one or both?

Private Sub sub1()
..do stuff[code].....

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If Throw An Exception From Within A Catch, Does The Finally (from The Catch) Still Execute

Jun 2, 2009

If I throw an exception from within a catch, does the finally (from the catch) still execute? i.e.

..some code with an exception in it...
catch ex as Exception
throw new SpecialException("blah blah" & ex.Message, ex)


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Nov 1, 2009

How do catch key event (short cut keys like alt+d,Ctrl+u) when a program running in system tray ?

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Dec 17, 2009

how do I program a .net framework message dialog screen in to the catch and try command

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Jan 23, 2012

I need to catch log4net exceptions (its own exceptions not app exceptions logged by it). I wish there's a way of doing it this way: [code] I have this code implemented and there's no errors in compilation but i force log4net to have an error (pointing to a non existing database in the config file) and nothing is threw.I've tried the listener aproach: [code] and it's writing the errors to log4net.txt, the forced ones i mean.This last aproach has a couple of drawbacks: it won't append every error to the file, if the error is the same it doesn't write it, i can't get the listener to write every error to that file, only one (I don't know how to fully configure the trace listener, it might be that). Thus it won't append the date and hour to every line wich is a necesity for me. Finally i can't give structure to it (xml). Even if the listener work i need to use the try/catch aproach, since i'm using ExceptionHandling from Enterprise library to log the errors in my app.

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Error 68 'Catch' Cannot Catch Type 'Microsoft.Office.Interop.Outlook.Exception' Because It Is Not 'System.Exception'

Feb 12, 2010

I am using VB.NET 2005 to create a Windows forms application.  I have a procedure named SendMail that creates an instance of Outlook.Application, to send an email from my application.  I found the code on this forum, I think.The procedure works fine, but I can't use error handling with it.I call the procedure from a button click event.  I put the procedure call in a try/catch block, and the application won't build, with the following error.

Error 68 'Catch' cannot catch type 'Microsoft.Office.Interop.Outlook.Exception' because it is not 'System.Exception' or a class that inherits from 'System.Exception'. C:datadevdmtiQTSQTSv7_1_20100212wQTSQTSReportsCriteria
pt_frmReportViewer.vb 43 21 QTS

Here is the code:

Sub SendMail(ByVal sFile As String)
' Create an Outlook application.
Dim oApp As Outlook._Application


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VS 2008 - Catch Setup In Program And A Message Box That Comes After The "End Try"

Feb 17, 2011

i have a try catch set up in my program and a message box that comes after the "End Try". when the message box pops up when an exception is thrown right after the second message box shows how do i stop this from happening?

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Run Exe Immediately Of A CD?

Aug 24, 2009

I have had absolutely no prior experience in any programming whatsoever. Yesterday I downloaded the visual basic 2008 express edition from Visual Basic 2008 Express Edition.

I have a small question which I am sure is very easy for somebody else to answer and I apologise in advance if this question is in the wrong section.

I wanted to make a small exe to autorun from a cd. I want to be able to hand the cd out to friends and family. So far I have achieved what I wanted with the little app. On the cd I have an exe file in a particular folder that when clicking a command button on a windows form - I would like to run this exe. At the moment I have:

Private Sub Button5_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button5.Click
Shell("explorer.exe ..appfolderapplication.exe")
End Sub

This finds and selects the application as required, however It does not run it. Another box comes asking me "Do you want to run or save this file?" If I click run, another box comes up "The Publisher could not be verified, are you sure you want to run this application?"

what code to I need to enter or change to make this exe run immediately as if I were the same as browsing for it and double clicking on it?

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Asp.Net Session Expires Immediately?

Nov 16, 2011

My Asp.net Session Expires immediately even though i did the settings in web.config file,

<sessionState timeout="2880" mode="InProc" cookieless="UseCookies"></sessionState>
<customErrors mode="RemoteOnly"/>


i did above settings in web.config even then it expires after approx 3 minutes..

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Oct 4, 2010

see below program. I start a new thread x with function abc, then I do some longer task.
Why does x only start after end sub? Shouldn't it start right-away, before sleep ?


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Sep 11, 2010

i have a datagridview with a column with comboboxes. My problem is that the changes that i am doing from comboboxes didn't occur to datagridview immediately but after the user click to another cell.

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Jan 13, 2011

I have an issue with VS 2008 datagridview combobox control. 

The combo box in question closes immediately after the CellValidation method that I wrote invalidates the input in the combo box cell.  What I mean by closes immediately is that when the drop down arrow is left-clicked, once I remove my finger from the left clicking of the mouse instead of staying down so that the user can see the selection options the combo box just closes. 

I'm currently using EditOnEnter as my EditMode style. (I've tried switching between the different option the same behavior exists).  The datagridview is bound to a dataset which was created from my database in MS Sql Server 2005.  

This problem exists on two different forms and occurs exactly the same way.  I don't know what other settings to mention to help in the troubleshooting of this error, but please feel free to ask me any questions so that I may resolve this issue.  By the way both forms use datagridviews tied to the same dataset, just different tables and table adapters. 

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Nov 12, 2010

Can anyone tell me how to kill a thread immediately.

I have tried MyThread.Abort, but it seems to do nothing. Someone told me it's because 'Abort' waits for the current operation to complete, but my thread will run for over 30 minutes before that happens.

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Jan 4, 2012

While developing on Visual Studio Express 2010, there are two buttons: Start Debugging, and Stop Debugging.

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Aug 15, 2011

I'm currently practicing working on mobile application using vb .net 2008. So I have these 5 forms that I link together. The form # 2 is where my quit button was positioned. I want to quit the whole application but form # 2 was the only form that is terminated while the rest of the forms was not.

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Aug 10, 2010

I'm getting 'Catch' cannot catch type 'Object' because it is not 'System.Exception' or a class that inherits from 'System.Exception'. and 'Expression detected' Code underlined in blue: Catch obj1 As Object When (?)

Private Sub OpenJAMem()
Dim num3 As Integer


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