i dont know y i am getting such errors.. i am getting memory currupt errors. my application was fine but i am suddenly getting errors after adding few lines of code..
View 12 RepliesThe user has been running the app in question for over a year with no issues like this (this is a VB2008 business/database application with an executable 4.6 MB in size). Starting last week, "all of a sudden", the user started getting INTERMITTENT error messages like the following:
Exception has been thrown by the target of an invocation.
Creation of the ImageList handle did not succeed.
Out of memory.
Parameter is not valid.
The last two have been accompanied by the big "red cross" on the form (in the screen shots the user sent me).The fact that the one message mentions "ImageList" and poking around on the Internet for answer on "Parameter not valid" points in the direction of a graphic problem, but nothing has changed in this area for a long time, and the app only uses graphics in a very straightforward way, using images on buttons and menu items, but not doing any in-line graphics methods.
I cannot use Visual Basic 2008 at all. When I go to "new project" and choose "Windows Form Application" I get this error.I have tried multiple uninstall/reinstall with no result.A microsoft reply to this suggested that I needed: " .NET Framework 2.0 Service Pack 1 " I checked, and I did not have the .netframework 2.0 service Pack 1.
When I tried to download and install the above from Microsoft.com, the istaller said that "it was not allowsed" and I was not able to install the service pack 1.
I tried Uninstalling net framework 3.5, 3.0, 2.0 and then reinstalling .netframework 2.0 sevice pack 1; then reinstalling Visual basic 2008 express edition. At the reinstall of Visual basic 2008, .netframework 2.0 sevice pack 1 is unistalled by .net framework service pack 2.When I check the foruims for simiar problems, the formus are mostly for Visual basic 5.0, or other programs that I do not have.
Here is the programs I have installed:
Operating system: Windows XP
Microsoft .net framework 1.1
Microsoft .NET framwork 1.1 Hotfix(KB928366)
Microsoft .Net Framework 2.0 Service Pack 2
[code]....
All the security updates and hotfixes for Widows XP.
I have a .net application that uses customerrors web.config module to display meaningful messages for errors. It works without any issues for 500 errors/exceptions caused by non-ajax and ajax components (updatepanel). However, in a scenario where updatepanel's asynchronous request times out, there is no error raised at all. I was able to see the timeout in firebug and come up with a solution that would at least display the error message as an alert and then redirect the user to the 500 error page using javascript but it's not quite doing what the rest of the application does in case of an unhandled errors like these. I basically just want everything to go through "LogEvent" mechanism so based on the severity of the error, it does the necessary work.This 500 error page doesn't have anything in the Server.GetLastError() for these timeout scenarios. Is this an expected behaviour? Can it be changed so I do have access to these timeouts in Server.GetLastError() OR maybe just run this error through "LogEvent" mechanism? Is there a better/more graceful way to handle this issue?
Below is my code to give you an idea, not exactly what I have in my application but pretty close.
Web.Config
<customErrors mode="On" defaultRedirect="~/Errors/ErrorUnknown.aspx" redirectMode="ResponseRewrite">
<error statusCode="500" redirect="~/Errors/Error500.aspx" />
</customErrors>
[code]....
I am working on a project for school and I am encountering several errors in my code relating to the numeric up down boxes I have in the application. I have inserted my code and the error list below. I'm sure that it is probably something really simply but I am learning the language on my own and I am a little stumped here.
View 18 RepliesI converted vb6 project to vb.net 2008 but I got some error first one :Name 'VarPtr' is not declared.I got this one two times :Value of type 'Projectname.Func.EXPLICIT_ACCESS' cannot be converted to 'String'.
View 9 RepliesPROJECT TYPE: Windows Forms Application
LANGUAGE: Visual Basic
.NET VERSION: 3.5
IDE: Visual Studio 2008
OPTION STRICT: on
OPTION EXPLICIT: ON
I am attempting to teach myself VB and write a parental control application at the same time, so my learning curve is rather steep. However, I have managed to complete the design of the application with no design time errors, and to my untrained eye, all my code looks like it should work. Unfortunately, when I attempt to debug the thing, it returns an error that looks like Greek to me. I have traced to line numbers I found mentioned in it, but I couldn't find anything wrong. I just need someone to point me to the part of my code that isn't working, and maybe give me an idea of how to improve it.
The project consists of 3 forms: MainForm, WarningForm, and AboutForm. The 1st and 3rd are self explanatory, the 2nd is simply a message popping up telling the windows user that they have 10 minutes before they will be logged off of windows. I cannot imaging why any of the codes on the 2nd or 3rd forms should be causing this issue since they don't activate until either a button is pushed (AboutForm) or after a certain number of hours has elapsed (WarningForm). So unless someone feels that it would be helpful, I won't post those on here.
[Code]...
In VB 2005, I am calling a C++ DLL function that returns the address in memory and size in bytes of a jpeg image. How can I load that jpeg image directly from memory into a picture box in my VB form? I cannot afford to save it to disk first.
View 10 RepliesIm getting a problem with one of my programs I have made in visual basic.NET where it gives me a memory error when i debug the program in the IDE. the exact error is this: "Attempted to read or write protected memory. This is often an indication that other memory is corrupt". My program basically has a few forms with text fields on that get their text values from an access database on the same hard drive. Im wondering if im doing something wrong because my program just seems to eat up memory whenever it does anything. For example I have one form that has a combobox on it and when you change the drop down list selection it retreives a few strings from the database and puts them into the relevant text boxes, if you keep changing the selection then the memory usage (in task manager) just keeps going up and up. occasionally I get the error mentioned above when debugging but in my built version of the program it throws an exception everytime the memory usage gets past 49K.
Also I noticed when debugging in the "immediate window" frame I get the following message often:A first chance exception of type 'System. Invalid OperationException' occurred in System.Data.dll...Do I need to somehow be "releasing" the memory that is used to gather data once it becomes redundant?
I am using the following code
This error occurs :
Attempted to read or write protected memory. This is often an indication that other memory is corrupt.
Attempted to read or write protected memory. This is often an indication that other memory is corrupt.
Public Class FormRegEnumValue
[CODE]......................
QuoteSystem.AccessViolationException was unhandled Message="Attempted to read or write protected memory. This is often an indication that other memory is corrupt." Source="System.Windows.Forms"
Im designing a web browser and i continue to receive this error after going to about 3 websites it crashes with that error.
I have a BackgroundWorker object that I instantiated to perform a DB process on a background thread ansynchronously. I have event handlers for DoWork and RunWorkerCompleted. I can tell that the BackgroundWorker is disposing of itself because I added a message box into the Disposed event handler.Is it necessary to detach the event handlers to ensure that the memory is cleaned up and that there are not memory leaks?
View 1 RepliesI've noticed that every time I start a new thread in my program, the memory usage jumps about 1000k and it never goes back down. I have ensured that the thread is no longer running, and only one instance of my worker thread is ever running at a time. I am using ThreadPool.QueueUserWorkItem and ASyncOperation to get stuff done. The program starts using a Sub Main in a module that uses STAThread; I read that using STAThread instead of MTAThread makes it impossible for the Garbage Collector to get in and consider objects for garbage collection. However, when I change the STAThread to an MTAThread, the WebBrowser control in my frmMain cannot be instantiated.
I get this exception:
Code: An unhandled exception of type 'System.Threading.ThreadStateException' occurred in System.Windows.Forms.dll
Additional information: ActiveX control '8856f961-340a-11d0-a96b-00c04fd705a2' cannot be instantiated because the current thread is not in a single-threaded apartment. I do threading with the WebBrowser control, so will using MTAThread fix my problem? If so, how should I partition my code so that the WebBrowser control won't be affected by the above exception? I call the thread repeatedly with a timer (although only one instance ever runs at a time), and my program's memory usage starts at about 5000k and can jump to 300,000k+ depending on many times the thread needs to be called.
I have developed a contact's manager in VB.net 2008, the program works fine on desktop's but when I try using it on a laptop I get this error message:
microsoft.visualbasic.powerpacks.vs, version=9.0.0.0, culture=neutral,publickeytoken=b03f5f7f11d50a3a
I can't figure out how to get VS to break only on unhandled errors. I've tried this checking the "User-unhandled" box and unchecking the "Thrown" box for "Common Language Run-time Exceptions" and I've tried checking both boxes, and I've tried checking only the "Thrown" box, and I've tried unchecking both boxes.VS either completely ignores all run-time exceptions or breaks on both handled and unhandled run-time exceptions. Is my VS 2008 IDE broken or am I missing something?
View 5 RepliesIs 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.
I'm just curious as to which one of these 3 error syntaxes in the try/catch is right.
vb.net
try
Catch ex As Exception
MessageBox.Show(ex.Message.ToString())
MessageBox.Show(ex.Message)
[Code]...
I was trying to make a calculator which takes the amont of copies you want to make and it tells you the cost. Then you type in the amount you want to enter and if its less a message box comes up saying "please enter more money". I've had a few problems
1. when i use formatcurrency the program crashes for no apparent reason
2. if i calculate cost without entering any copies then it crashes (ive tried putting a msgbox in but it crashes anyway)
3. if i get the msgbox to come up saying "Please enter more money" i had to remove the formatcorrency tag.
ive been building a app, and have a beta tester who is on xp, im on vista x64, the app works great t my end, an dive also tested it on another pc with vista x64, and on a laptop wit win7 32, Now my beta teste has been testing fine on hes xp rig, up untill today when the WIP build i sent him started kicking up errors all over the place, try as i might i cant narrow it down to were the error is, heres how the app looks on vista and win7:[code]So i thought it might of been something i changed in between the working xp version and the wip but, all i changed was the page title, nothing else, no code etc.
View 4 RepliesThe follow code can be called about 6K times on the server it is run on then gets a out of memory error in the last catch statement. I don't see what is wrong with the code, it works well up until the out of memory..
Public Function AddUserToGroup(ByVal sSamAccountName As String, ByVal sGroupName As String) As Boolean
Try
Dim returnStatus As Boolean = True[code]......
I have two forms, Form1 and Form2. Form2 has a button to show OpenFileDialog. I call Form2 from Form1 by a button. My startUp Form is Form1. When i start debugging, i press my Form1's button to show my Form2, it shows, but when i click On Form2's Button to show OpenFileDialog it is giving me exception that
"Attempted to read or write protected memory. This is often an indication that other memory is corrupt."
When i set my startup Form to Form2 and click Form2's Button to show OpenFileDialog then it shows!
With option strict on i have errors addition. I want how to make the addition of:
1. all the odd numbers on a collection of 5 textboxes and see result to label1
2. all the the even numbers to label2
3.all numbers smaller than number 5 to label 3
4. all numbers greater than number 5 to label 4
I'm not sure what happened. I saved my project last night and everything was in working order. I opened it this morning and it's not recognizing a lot of the System methods and functions
MsgBox
Format
FormatCurrency
InputBox
Even the constants like vbTab and vbCrLf aren't appearing. Any suggestions on this? I'm running VS2008 Express Edition.
I'm familiar with Throw New Exception(), and how this causes an application to "break" with an error at the Throw line itself.But what I'm after is a way to throw the exception within a function, and for the application to break at the line which called the function - not at the Throw statement itself.Is there a way of doing this, but without having to wrap the function call within a Try-Catch?
For example:
1. Main code calls function "DoThis()"
2. DoThis() runs and throws an exception
3. Code breaks at "Call DoThis()"
Error14Option Strict On disallows implicit conversions from 'System.Windows.Forms.TextBox'to 'Microsoft.Office.Interop.Excel.TextBox'
View 18 RepliesI am testing out this code which creates a excel file, and then call a sub to insert data into the file. The excel is created, but the function is not inserting the data. I am getting a error "External table is not in the expected format". I do not know what could be the problem.
This is the code below:
Imports Microsoft.Office.Interop
Public Class Form1
Private Sub Button1_Click(ByVal sender As System.Object, ByVal e As
[Code].....
I am writing out an xml file that has the folowing root element:
<TileSet xmlns="D:ProgramminganimationClassLibraryanimationClassLibrary"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="D:ProgramminganimationClassLibraryanimationClassLibrary tileSetContentsV3.xsd"
Height="100"
Width ="100">
[Code]...
how to write these attributes correctly?
I have a weird problem that seems to of started happening yesterday afternoon. Basically, VS seems to of decided to act as if I had set like a "On Error Resume Next" style rule where instead of telling me about exceptions it just ignores them completely.For example, I just created a fresh new project and stuck this in the form_load event:
vb.net
My.Computer.FileSystem.ReadAllText("rubbish")
So that should error and tell me that it could not find the file, but instead the form just loads and ignores that code.Obviously this isn't right..
I am working with VB Express 2008 and i am having a lot of errors appear when using code from other VB Versions. Is their a computability problem
Private Sub Button2_Click(ByVal sender As System.Object, ByVal e As System.EventArgs)Handles Button2.Click
'CLICK TO OPEN DVD ROM DRAW Declare mciSendStringA Lib "winmm.dll" (ByVal lpstrCommand As String, _
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Use code tags when posting your code. Code tags are used like so =>
When I try to compile my project, I get this error
Error 1 Unable to copy file "objDebugoneForce.pdb" to "binDebugoneForce.pdb". Access to the path 'objDebugoneForce.pdb' is denied. oneForce.
How to rectify it? [URL]