Application Crashes For Some (but Not All) Customers When Clicking A Listbox After Printing?
Feb 3, 2011
We have a rather large VB.NET accounting application that crashes occasionally for some customers. I have now been able to reproduce this particular almost 100% in my test nvironment using certain data. The crash happens when clicking a list box after printing a report. The form involved has a list box listing available reports. You select one or more reports from the list box and click the print button. After printing, if you click the list box again, the program crashes, with an exception that does not seem like one VB.NET should even be able to produce.The exception message is: "Attempted to read or write protected memory. This is often an indication that other memory is corrupt."The call stack is:
1. System.Windows.Forms.UnsafeNativeMethods.CallWindowProc(IntPtr wndProc, IntPtr hWnd, Int32 msg, IntPtr wParam, IntPtr lParam)
2. System.Windows.Forms.NativeWindow.DefWndProc(Message& m) [IL offset: 0x3e]
[code]....
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Apr 27, 2009
I'm developing a small app to for a vehicle rental company. They require the app to print invoices for customers (fuel usage and etc) with charges. I was thinking of outputting row by row to a html (file) table and populating qty,amount,final amount etc programmatically. And letting the user view and print that html file.
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Apr 22, 2010
[Code]...
how to do this. kindly show me some sample code for this
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Apr 21, 2010
Using VB2008 I need to create an application that calculates and displays a customers bill.Business customers must have one connection.
Heres the data
Residential customers:
Processing fee: $4.50
Basic service fee: $30
Premium channels: $5 per channel
[code]....
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Mar 27, 2011
I am writing a system that utilizes the Timer to execute a command after an interval of three seconds. The command is to send a trigger to my RFID reader and hence the program will then decode the received data and changed it to information. It runs fine for the first few hours, but it will crash after that and the error given is an "System.NullReferenceExeption - Object reference not set to an instance of an object." error. Initially, i thought that it might be something that relates to my comobobox selected index change event that might be causing the crashes, but yet the application is crashes after i removed the section.
I fail to find the reason of the crash, even after spend fewing days finding the memory leak or some other events that might cause the crash.
I have insert TRY CATCH METHOD, just to catch the exeption error message that might cause by one of the codes, but still it doesnt show me.
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Jun 8, 2010
I recently finished an application which I spent a long time making, but when I sent it to my friends so they could beta test, everyone single one of them said it stopped responding on start up. I took the .exe out of the project>bin>debug>application.exe and thats what I gave them, and it doesn't crash for me, so i was wondering what might be causing it to crash, or if they would need extra files for it to work properly?
Also, when my friend opened it, he says he got an error that says:
Name: Microsoft .NET Error
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Nov 2, 2009
I have created a program in Visual Basic 2008 Express Edition, and it runs fine on my computer, but on client computers (which do have the .NET |Framework installed), it crashes. I have ran Win dbg, and it says the program encountered a break instruction exception. I have googled a lot, but can't make the program work on client computers.
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Apr 24, 2012
i have created a very simple console application in vb.net that emails me some info from the db daily. everythign works in my dev environment, however when i move it out to production and try to run the executable, i get the following error message:"A problem caused the program to stop working correctly. please close the program"i have put in some exception checks in the code:
Dim output As String
Try
output = FormatIndividualRecords(False)
[code].....
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May 21, 2010
In my application (VB2008),I am using MS flex grid and it was workingfine on 32bit mode. When I tried to compile the same code base in 64 bit ,it crashes the application.
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Oct 16, 2010
I developed one application in VB.Net 2010. It worked fine on my laptop.[code]...
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May 21, 2009
I have a VB application in .NET Framework 2.0 and I'm using VS 2008 Professional for development. The application is running without any problem on some PCs and it's not running on one of the PCs. To make sure that nothing is wrong with the that specific PC, I tried to reproduce the issue on my machine. So I formatted my PC and reinstalled everything. After installing .NET Framework and required drivers, the ran the application i got the same error. Then I installed VS 2008 and open the project to debug my code and then I realized that the exception is being thrown on this line:
********************************
Private Sub btnEnterRecords_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles btnEnterRecords.Click
' Dim frmNext As New frmIncident()
[Code].....
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Jan 4, 2011
We have an application that works well on XP/Pro, Vista, Windows 7, Windows 2003 Server, Windows 2008 Server (32 bit) but is problematic on Windows 2008 Server (64 bit). The application uses an unsigned activeX control which may or may not be related to the problem. To install we need to add the program name and regsvr32 as DEP exceptions. Once that is done the application installs correctly and operates normally except when the application closes.
If a user clicks the 'exit' button our code basically says 'unload me' (where me = the main form of the application) and there is no code in the form_unload section of the program.
Everything works well on every Windows platform except Win 2008 64 bit where we get
APPCRASH
Application Name: PDFPrint.exe
Application Version: 10.10.0.18
Application Timestamp: 4d238253
[Code].....
After we continue to close the program we see a message box with run time error 216 at 00002B24 message.
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Jul 2, 2010
I seem to have a problem with an application i made. I hope you can help me with this as it has puzzled me for awhile now.
[Code]...
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Jul 3, 2009
I'm writing a console application in Visual Basic 2008 Express. I added several text files to my project as resources. Specifically... I went to my project's "Properties" page and selected the "Resources" tab. I clicked the "Add Resource" dropdown and chose "Add New Text File". I entered some simple text and saved the file as "Welcome.txt". I built the entire solution.n my code, I use console.writeline(My.Resources.Welcome) to display the text
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May 20, 2010
Iam using GetKeyboardState API in my application for getting keyboard state . it was working fine for win32 applicati9on. When I moved to 64 bit application gets crahes without popping any exception message.my sample code is as given below:
Private Declare Sub keybd_event Lib "user32" (ByVal bVk As Byte, ByVal bScan As Byte, ByVal dwFlags As Integer, ByVal dwExtraInfo As Integer)
Private Declare Function GetKeyboardState Lib "user32" (ByRef pbKeyState As Byte) As Integer
[code].....
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Sep 12, 2009
Application stopped working and just crashes on startup?
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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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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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Apr 8, 2011
I have a vb.net 2005 application that connects to an access database. I use Access Database Engine 2007 to connect to to this database.
Everything worked fine until i install MS Office 2010. After this, the application started to crash, returning the error 'application has stopped working'.
I've a Windows Seven Enterprise SP1 32bits.
When i debug the application, visual studio also crashes. I get the following error, closing an OleDbConnection: 'vshost.exe stopped working'.
I decided to run some tests. I installed my application on 2 virtual machines: a windows xp sp3 and a windows 7. When i installed ACE 2007 everything worked fine, but when i installed ACE 2010, thats when the problems began. This behavior ocurred on both machines.
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Apr 13, 2012
I am having an issue with an ASP.Net page I am writing and struggling to diagnose why this page is failing.
I am trying to do this:
Dim st As New StringWriter()
Dim strURL As String = "CourseProgramme.aspx?id=3733"
Context.Server.Execute(strURL, st)
txtNotes.Text = st.ToString()
The aim here is to get the HTML back for the page that has been specified in strURL and then display it in a textbox. However when I run this code it crashes the ApplicationPool in IIS and when I look in event viewer I see this error message:
A process serving application pool 'blueprintdev' suffered a fatal communication error with the Windows Process Activation Service. The process id was '5284'. The data field contains the error number.The strange thing here is that in another page I do this code which works fine:
Dim strDutyStartDate As Date
strDutyStartDate = TextboxDutyStartDate.Text
Dim st As New StringWriter()
[code]....
As far as I can see other than the URL I am passing, which does exist, I cannot see a difference between the two.The page I am developing is in ASP.Net with .Net 4.0 however in the website there are some classic ASP pages. IIS is running at version 7.5.7600.16385 on Windows Server 2008 R2 64Bit.So far I have tried setting the application pool to run in 32bit mode but that causes errors in other areas and the site will not load.
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Jul 6, 2010
I have been scratching my head for a while on this, but not sure if it can even be done. Basically I tried the listbox_doubleclick event but that did not suffice. I am looking for something to use that can run my code when an item in the list is double clicked.It works with the listbox_doubleclick as should, but the problem with this is if I double click the listbox anywhere, it will run the code for the selected item.
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May 23, 2012
There is a very strange problem with a Windows Service I am working on that I would like to understand why it occurs. The service loops every 5 minutes and then within that loop it loops through keys containing webservice URLs that are numbered such as:
<add key="URL.1" value="http://dummy1.com/Service.asmx"/>
<add key="URL.2" value="http://dummy2.com/Service.asmx"/>
<add key="URL.3" value="http://dummy3.com/Service.asmx"/>
The code that does this check is:
If String.IsNullOrEmpty(AppSettings("OM." & intCount & ".Name").ToString) Then
When it hits a key that doesn't exist an exception is thrown and the service stops and waits for 5 minutes until the next loop.This usually works great but every week or two the Windows service will crash on that line without any Exception. The application log has a line from before that line but nothing after, none of the Try Catches are hit (the main one is catching the base "Exception" class).In the Event Log for Windows is the following:
Faulting application name: MyService.exe, version: 1.1.2.0, time stamp: 0x4fa22a24
Faulting module name: KERNELBASE.dll, version: 6.1.7601.17651, time stamp: 0x4e211319
Exception code: 0xe053534f
[code]....
The weird part is that this line of code is executing fine 300 times a day for at least a week which is around 2000 times before that one time it causes a full crash of the application. why this is occurring? I have changed that line of code to not rely on Exceptions and it has been working fine for a week now with no crash so could be something to do with too many Exceptions - maybe causing a stack overflow?
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Jul 26, 2011
the error code points to a Stack-Overflow I can not pin the offending code down because the software works faultlessly on some computers after deployment but on others the crash occurs when a Gantt chart gets redrawn after changing activity dates. All the computers are situated on the same LAN and connect to the same SQL server 2008 database.The application has been developed with Visual Studio 2008.
I used the same install disk on all the computers and they are all using the same date/time format. The crashes occur on both 32 - and 64 bit machines.
The error message:
Stopped working
Problem signature:
Problem Event Name: APPCRASH
Application Name: Pfisterer Project Manager.exe
[code]....
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Nov 24, 2009
I will include a link to a copy of my source Code. The Problem is that I have to create a user management system. I have almost all my features working but there are one or two I can't get working. When the program loads a text file is read and the program lists the first name of everyone in the text file into a list box. I want to be able to get so that when you click a name in the list box, the persons information will be displayed in the text boxes to the left. And also when you edit those text boxes you can click the button for modify current and it will modify that persons data. The other problem I'm having is being able to search that text file for the users e-mail and return the first names of people who have that e-mail into the listbox.
Link to Source Project: [URL]
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Feb 26, 2008
I generate random number and it is of four columns in the listbox. I want to print it out. With the following VB.Net code, it prints only the first column, not the other three columns. Can any one help me, so that I may have all these columns printed out.
Public Class Form1
Private Sub Button2_Click(ByVal sender As Object, ByVal e As System.EventArgs) Handles Button2.Click
PrintDocument1.Print()
End Sub
[code]....
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May 27, 2010
I have a listbox which collects data regarding the planets. I would like to give the user the ability to print out this listbox with a push of a button.Heres a sample of the listbox coding info:
lstOutputMain.Items.Insert(0,
"Pluto:")
lstOutputMain.Items.Insert(1,
[code]....
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Mar 5, 2009
im tring to get vb to print all the items in a textbox to a text file Private Sub Button2_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button2.Click For Each liststring As String In ListBox1.text liststring = liststring & vbCrLf My.Computer.FileSystem.WriteAllText("C:\sample.txt", liststring, False, System.Text.Encoding.ASCII) Next End Sub
am i going around the wrong way doing this? because this prints a selected item and also prints each letter on a new line
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May 13, 2010
I have been trying to print multiple pages from a listbox. This is the code I have been trying to get to work. It prints the entire contents of listbox6, which is good but it only prints on one page and the text overlaps once it starts to print from the top of the page again.
Code:
Private Sub PrintDocument3_PrintPage(ByVal sender As System.Object, ByVal e As System.Drawing.Printing.PrintPageEventArgs) Handles PrintDocument3.PrintPage
Dim lpp As Integer
Dim lno As Integer
[code]....
All I need to do is print the entire contents of listbox6 whether it has 1 page of data or 19 pages of data.
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May 2, 2011
Ive built a very small application for personal use only. Ive been working on it for around 2-3 weeks & have just finally completed it this morning.
Basically what I want to do is add a button to my form which will allow me to take the contents of the listbox and print it out or atleast be able to save it to a word document or something of that kind, I'm not entirely sure how I would go about doing this. Bare in mind, Ive only just stepped into VB around a month ago.. self learning myself via internet & several books I have at hand.
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Jul 11, 2011
Found some code for printing documents, as I've never tried it before. My main focus is to print the content of a listbox to a sheet of paper. What I found uses a type of ListItem, which doesn't seem to be available for a Windows Form outside of web dev.
My attempt was to add all items to an array and then cycle throught the array to create a new line after every array entry. I think that portion is functioning as desired, but I'm not quite sure if I'm handling the print function correctly.
VB.NET
Private Sub LnkPrint_LinkClicked(ByVal sender As System.Object, ByVal e As System.Windows.Forms.LinkLabelLinkClickedEventArgs) Handles LnkPrint.LinkClicked
If PrintDialog1.ShowDialog() = DialogResult.OK Then
Me.ThePrintDocument.Print()
[Code]...
I don't get any errors and the printer spits out a page, but it's blank.
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