VS 2008 Robust Response To Out Of Memory Exception?
Mar 31, 2010
I've noticed that GDI+ and other graphics can crash when asked to deal with very large images, and the crash doesn't always occur where you'd expect it. I am getting this when testing the slide show program I posted to the code bank yesterday. This is the code concerned:
vb.net
Private Sub animTimer_Tick(ByVal sender As Object, ByVal e As System.EventArgs) Handles animTimer.Tick If infos.Count = 0 Then Exit Su ticks = (ticks + 1)
[code].....
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Jun 9, 2010
I am trying to deserialize an object represented as an array of bytes - but I get a Out of Memory Exception. Whats causing this?
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Jul 27, 2009
Why am I getitng the following error? Object reference not set to an instance of an object. Description: An unhandled exception occurred during the execution of the current web request. Please review the stack trace for more information about the error and where it originated in the code.
Exception Details: System.NullReferenceException: Object reference not set to an instance of an object.
Source Error:
Line 9: Dim entry As DictionaryEntry
Line 10: For Each entry In dictionary
[CODE]...
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Jun 10, 2009
I am pretty new to Visual Basic and am only using it to create a very simple programme. It is essentially an interactive encyclopedia where the user can type in a subject into a text box and get a form with information on it to pop up. I am not using any data sets etc. While the forms are all very simple and the code very limited there are dozens of forms involved, this was working fine until recently when I started to run into OutOfMemoryExceptionThrown every time I try to build my program and debug it. This exception started appearing sporadically with the programme sometimes compliling fine and other times refusing to but now it is every time. I have never written code to do this before so how do I got about freeing up memory? I read in a similar post that it may be connected to allocating memory and then not freeing it up again, or perhaps having too many event handlers in my program without ending them, however I am lost and don't know how to fix these problems.
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Jun 22, 2010
I am writing some code to retrieve data from SQL Server, including an image field. I load the retrieved image data into a byte array and then convert the array into an image. Finally, I want to show a thumbnail of the image in a picturebox control on my app's form. All this works perfectly on my dev machine running windows 7, but the following code:
Dim myblankCallback As Image.GetThumbnailImageAbort = New Image.GetThumbnailImageAbort(AddressOf blankCallback)
PictureBox1.Image = newImage.GetThumbnailImage(180, 180, myblankCallback, New
[Code]....
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Oct 28, 2010
I always get an out of memory exception with my drawings...I read somewhere that I have to dispose my graphics to diminish the amount of memory used by the system.
I have the onPaint event and in there I call my functions with
Dim g as Graphics = e.Graphics
draw_all(g)
So in fact I have to dispose the e.Graphics every time he has to be repainted. Now my question how can I do that, because when I write before the draw_all function g.Dispose, that doesn't work, because he deletes the declaration of g and he doesn't know anymore what it is. If I dispose it after the draw_all function, he doesn't want to draw either.
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Jun 2, 2010
I dying trying to resolve this - its got so bad im unable to perform alot of my work. I keep getting an Out of Memory Error exception.
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Sep 1, 2011
I created a TaskBar application in Visual Studio which minimizes itself inside the system tray and show notifications to the user based on the database change. Whenever a new task assigned to the user he will notified at the system tray like a balloon popup. But whenever the applications runs for an average 15 hours time suddenly my applications crashes and shows out of memory exception.How can i debug this issue ? I can't wait for 15 hours and check for this issue? Is there any tool available to check the memory leakage of my application which can directly point at my issue? How can i generate out of memory exception to my program so it will be debugged easily and fast?
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Sep 4, 2009
I got an out of memory exception in a photo editor thingy i was making in vb.net. The bitmap image is constantly changing, and I always Dispose() of it after it has been sent off to the other bitmap. Is it being stored in a temp folder and using up all my space on the computer, or what? It always bugs after about 8 bitmaps have been drawn.
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Jan 27, 2012
I have a form created to act as a signature form. It will be used on an iPad via Citrix and that's not negotiable per my job so please don't make suggestions about developing it with Apple software. Anyway, on to the issue:Since this will be on an iPad I cannot use an OnMouseDown event to handle the drawing with the form. It consists of a PictureBox where the signature will occur. It works fine unless the user gets "draw happy" and starts drawing for a while. After a little time an Out of Memory Exception occurs and the program crashes.[code]
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Oct 26, 2011
I have an application that listens for connections asynchronously. When a connection comes in, it spawns a new thread from the callback method. This works fine for up to about 13 simultaneous connections then it dies with an out of memory error. The threads that are spawned just do a CHAP handshake and authenticate then go in to a command loop where they sleep until a command comes in or a timeout occurs. I have pasted the code below. Sometimes it will not throw an error but the thread never gets spawned although the connection is accepted.
Code:
Imports System.Net.Sockets
Imports System.Threading
Public Class UpdateMonitor
[Code]....
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Jun 12, 2011
I am working with application for Excel sheets in vb.net.My database is Sql server 2005.I am having around 8 lakhs of rows in my database and 64 columns.when I import a excel sheet for searching the Duplicate of excel sheet rows in database i get this Error System Out of Memory Exception.What is the reason to occur this kind of Error.Is it due to Excess of rows in database or coding error in Application.
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Jun 25, 2010
I have the following sub where i am reading in a 250mb file of dictionary words in a list, for example
Aardvark
Because
Count
[Code]....
As you can see i am wanting to use linq to remove duplicates, and also because i want to use the union and except statments elsewhere.
The above is fine if the filesize is about 150mb but with 250mb it throws a out of memory unhandled exception, on 'sWriter.Writeline(sline).
I am thinking this would need to be inside the loop, but cant work out how include my linq statement also.
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Sep 13, 2009
I'm kind of torn between these two error-handling models:Create a boolean Error and a string ErrorMessage property for your object. Catch all exceptions internally in the object's methods and pass the messages along using conditional logic from the caller, ie:
[Code]...
To me, it seems like the same amount of code either way, except that you have property code for the Error and ErrorMessage properties. However, you also can tell when an error occurs without having to check for exceptions. Which pattern should I go with?
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Mar 21, 2010
i'v got a problem with the Report Viewer form .NET 2008. I'ave to get Some 100000 Records for my company for a year dump report.The problem is i get the OutOfMemory Exception on the design of report.I get only the column i need and i use a Dataset to display.
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Oct 3, 2011
I have a desktop application in vb.net 2003. Here when we load the main screen we find an unhandled exception showing out of memory, but we are able to continue working off the form and retrieving data. It works fine, but the image is not getting loaded.In the main screen we have a background image loaded, one of the images is animated
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Apr 9, 2010
I have some code that uses the Windows Media Player Library capabilities to get around using ID3 tags. I keep getting this error however, whenever I add 1000+ songs to the datagridview:
For Each File_FullPath As String In My.Computer.FileSystem.GetFiles(My.Settings.Path, FileIO.SearchOption.SearchAllSubDirectories, "*.mp3", "*.m4a")
Dim WMP As New WindowsMediaPlayer
WMP.URL = File_FullPath
[code]....
Here is the code I'm using that gets the error:The problem is I need a way to clear the WMP.mediaCollection, but I don't know how.
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Jan 31, 2011
I am using the following piece of code to load images as thumbnails to a FlowLayoutPanel control. Unfortunately i get an OutOfMemory exception.As you already guess the memory leak is found at line
Pedit.Image = System.Drawing.Image.FromStream(fs)
So how could i optimize the following code?
Private Sub LoadImagesCommon(ByVal FlowPanel As FlowLayoutPanel, ByVal fi As FileInfo)
Pedit = New DevExpress.XtraEditors.PictureEdit
Pedit.Width = txtIconsWidth.EditValue
[code]....
Update: The problem occurs while loading a number of images (3264x2448px at 300dpi - each image is about 3Mb's)
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May 10, 2009
Forget fancy shmancy web stuff. I'm looking for a good .NET CLI argument processing utility, prefer open source code. This is for quick and dirty utilities that need robust and friendly command line argument handling.These are utilities with maybe a day of effort in them. Investing a few days writing good command line handling seems overkill but they really need it.Features I like in command line handlers. I'd be thrilled with any open source project that had 2 or 3 of the following.A consistent syntax, posix had a nice command line standard, but not necessarily posix.Ability to provide short names for agruments. E.g. "msbuild /t" == "msbuild /target".It supports good command line parsing then gets out of the way. I want some that my code uses, not something that imposes a pattern on my code e.g. I don't want to have to respond to the presence of an arg with an event, that type of thing. Seperation of concerns is good enough that it's logic can be unit tested. Oh - is it two much to ask for it to read attributes off a class properties (as in .NET configuration classes)? I like the config file overrides in msbuild. I can set properties in a build file, but override on the command line. Built in "show usage". WSF files (csript.exe) have this functionality. I'm not willing to write jscript to get the command line handling though.Not powershell. I can't find anyone in my company who can stand Powershell syntax.
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Sep 30, 2010
I've seen other people that have had this exception post on the forums, but none have had it happen like my situation. So I have a multi-threaded VB.net app that will have the protected memory exception occur while it's in the Thread.Sleep call.
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Nov 26, 2011
I have searched other forums, google, etc. and have not find a solution. I am creating a VB.NET application using Visual Studio 2010. My application runs fine inside the IDE. Outside of the IDE, it crashes immediately with an OOM exception. I have compiled the program in both VS 2010 and VS2008. The outcome is always the same. I increased my Desktop heap to 12288 meg from 3072 meg thinking that was the issue, but the outcome is the case. Although the increase does improve my response in the IDE. The error is also being reported as related to mscorlib.dll; and my version is for 2.0 framework is 2.0.50727 and for 4.0 framework is 4.0.30319. I am running Windows XP/SP3.
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Feb 18, 2010
I am retrieving a large BLOB and keep getting an Out Of Memory Exception. It occurs when I use a SqlDataReader to either check if the column is NULL, or if I try to read it and assign it to a Byte type of parameter, or if I use Response.BinaryWrite.
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Mar 8, 2010
I have created a windows form based application and I want the form to add a user specified amount of user controls (with textboxes) on to a panel. The user can then click some button and the controls on this panel are cleared and new ones are added. The user does something and the process is repeated. Now, I wanted these textboxes to support spell checking and looked all over for a free solution.
WPF textboxes support spell checking where the ones in regular win forms do not. I thought I would be able to use these WPF textboxes by adding them to an ElementHost object which is, in turn, within a panel. This panel would be a user control.
So, in my application, I would be able to add instances of these user controls onto the form and make use of .NET's spell checking goodness. This actually worked but after using the application for a while, found that the application would eventually freeze on me due to out of memory errors. I have pinpointed the memory errors to these WPF controls since this problem does not happen with normal textboxes.
When the window is opened and the number of controls is specified, this is pretty much how the controls are added:
Dim xOffset As Integer = 0
For i As Integer = 0 To theNumber
Dim myUserControl As New SpecialUserControl()
[Code].....
There are a lot of results on the internet when I tried to find a solution and I'm thinking that the problem I am having is due to the fact that the WPF control is not going away even after clearing the panel. Following this conclusion, I have tried different solutions regarding disposing these controls or setting them to nothing but the memory problem keeps occurring.
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Sep 24, 2010
I have a fairly complex application which makes use of an MS Access database. My application generates some 14million entries and inserts them after each generation, into the database. The app works perfectly without any bugs(that I am aware of) apart from one problem. If I run the app and let it run the full 14million odd data entries, the app crashes some way through and gives an Out of Memory exception.
I then loaded up TaskManager and notice that the memory usage increases by about 8-15Kb per second. I have done some reading and have tried using Dispose() to get rid of any objects finished with, I have tried building in release mode and the problem remains. I'm not even really sure if it is a memory leak or something else. I am using VS2010 and my application is running in .net 4.0.
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Nov 27, 2011
I need some guidance on a little program I'm making (one that I thought would take a couple of hours from start to finish, it's been days now ...) that determines all of the proper divisors of any given number up to the maximum value of a UInt32.
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May 27, 2009
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.
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Jul 12, 2010
I am using .net 2.0 and I am getting an exception of system is out of memory. My existing function takes datatable as input parameter which contains little bit large data (eg. more than 35000 rows) and in that function I am appending some xml node data and atlast I am returning the stringbuilder as a object.
[Code]...
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Jul 26, 2011
In my project I am exporting excel file to view some data's. When I am clicking the button it throws an error as follows(The error is thrown in the line Response.End):
[Code]...
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Oct 21, 2011
I am using a VB script in SSIS Script Task to add header and Trailer to a flat file. The code was working fine until recently i came across a problem where the rows in the file are more than usual and resulting in a failure on script task with error`Error:
System.Reflection.TargetInvocationException: Exception has been thrown by the target of an invocation. ---> System.OutOfMemoryException: Exception of type 'System.OutOfMemoryException' was thrown.
[Code]....
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May 19, 2010
I am facing an amazing problem in my application. On my Developement server when I am running my application, then there is one function where I am trying to put whole stringbuilder contents in a string object. This Function is used for paging the reports.For that I am using a method of Stringbuilder.tostring() and when I chek the value of this statement (stringbuilder.tostring()) it shows no such interface is supported, which later on throws exception of system is out of memory. Here i am using .net 2.0 framework and sql server 2005 database.But when I run the application on stagging server then there is no such exception thrown.[code]
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