ContextSwitchDeadlock Was Detected?

May 18, 2011

I'm getting this message in my 2010 debugger suddenly for some reason:The CLR has been unable to transition from COM context 0x4c4b68 to COM context 0x4c4cd8 for 60 seconds. The thread that owns the destination context/apartment is most likely either doing a non pumping wait or processing a very long running operation without pumping Windows messages. This situation generally has a negative performance impact and may even lead to the application becoming non responsive or memory usage accumulating continually over time. To avoid this problem, all single threaded apartment (STA) threads should use pumping wait primitives (such as CoWaitForMultipleHandles) and routinely pump messages during long running operations.

It happens while I am looping through a datatable. In each iteration I do a SQL Select lookup and a a SQL Update if I don't find a matching record.

For Each drCurrentRow As DataRow In m_Dataset.Tables("Group").Rows
Dim boolFound As Boolean = False
CheckForRecordInTemp(boolFound, drCurrentRow.Item("ACTIVITY_GROUP"))

[code]....

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VS 2005 ContextSwitchDeadlock Was Detected?

Jun 9, 2010

Message: The CLR has been unable to transition from COM context 0x1b2008 to COM context 0x1b2178 for 60 seconds. The thread that owns the destination context/apartment is most likely either doing a non pumping wait or processing a very long running operation without pumping Windows messages. This situation generally has a negative performance impact and may even lead to the application becoming non responsive or memory usage accumulatingcontinually over time. To avoid this problem, all single threaded apartment (STA) threads should use pumping wait primitives (such as CoWaitForMultipleHandles) and routinely pump messages during long running operations.

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IDE :: Error ContextSwitchDeadlock - Eliminate?

Feb 13, 2009

when i run code after 60 sec it display following error what is this error and how to eliminate? ContextSwitchDeadlock was detected Message: The CLR has been unable to transition from COM context 0x2040a8 to COM context 0x204218 for 60 seconds. The thread that owns the destination context/apartment is most likely either doing a non pumping wait or processing a very long running operation without pumping Windows messages. This situation generally has a negative performance impact and may even lead to the application becoming non responsive or memory usage accumulating continually over time. To avoid this problem, all single threaded apartment (STA) threads should use pumping wait primitives (such as CoWaitForMultipleHandles) and routinely pump messages during long running operations.

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Nov 3, 2010

I get the ContextSwitchDeadlock Error when I set try to RichTextBox text to some large text, empty it and then set it to some other large text again.[code]...

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Mar 30, 2010

I'm using VB .Net 2008. I have been experiencing a wierd problem with my FileSystemWatcher that I haven't been able to resolve for the past few days. The watcher only catches the first event. The watcher is enabled via EnableRaisingEvents. I'm not sure why it quits. I was getting an ContextSwitchDeadlock error, so I placed <MTAThread> before the sub to switch to multiple threading. The errors stopped, but the FileSystemWatcher doesn't activate after the first event. Has anyone experienced this before? How do I fix this? [Code]

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Windows Service Giving Error ContextSwitchDeadlock?

Jan 21, 2011

I've developed a windows service that connects to a database and executes a Stored Procedure when running in debug mode I get the following message: "ContextSwitchDeadlock was detectedMessage: The CLR has been unable to transition from COM context 0x1ffc20 to COM context 0x1ffd90 for 60 seconds. The thread that owns the destinationcontext/apartment is most likely either doing a non pumping wait or processing a very long running operation without pumping Windows messages. This situation generally has a negative performance impact and may even lead to the application becoming non responsive or memory usage accumulating continually over time. To avoid this problem, all single threaded apartment (STA) threads should use pumping wait primitives (such as CoWaitForMultipleHandles) and routinely pump messages during long running operations."

vb
'Explicitly imports a namespace into a page, making all classes and interfaces of the imported namespace available to the page.

[code]....

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[2008] Run Code After 60 Seconds Then Gets Error ContextSwitchDeadlock?

Feb 12, 2009

when i run code after 60 sec it display following error what is this error and how to eliminate ?ContextSwitchDeadlock was detected Message: The CLR has been unable to transition from COM context 0x2040a8 to COM context 0x204218 for 60 seconds. The thread that owns the destination context/apartment is most likely either doing a non pumping wait or processing a very long running operation without pumping Windows messages. This situation generally has a negative performance impact and may even lead to the application becoming non responsive or memory usage accumulating continually over time. To avoid this problem, all single threaded apartment (STA) threads should use pumping wait primitives (such as CoWaitForMultipleHandles) and routinely pump messages during long running operations.

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PInvokeStackImbalance Was Detected?

Jul 7, 2011

Am getting this error when am running the code to open/close the CD try:"PInvokeStackImbalance was detected Message: A call to PInvoke function 'TabsTest!TabsTest.Form1::mciSendString' has unbalanced the stack. This is likely because the managed PInvoke signature does not match the unmanaged target signature. Check that the calling convention and parameters of the PInvoke signature match the target unmanaged signature"

[Code]...

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Feb 7, 2012

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Dec 3, 2010

CLR detected an invalid program

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Apr 14, 2011

I am using the following function within a WndProc override:

[Code]...

Edit and Possible Solution: Based on the answer at DisconnectedContext MDA when calling WMI functions in single-threaded application I think the solution here is to call GetPortName() outside of WndProc. I will test this tonight and post my result.

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May 5, 2010

This is the message that I'm getting out of a program I'm writing.

InvalidApartmentStateChange was detected

Message: The current thread used to have an apartment state of MTA, but the application has CoUnitialized this thread and it is now STA. This may cause calls on RuntimeCallableWrappers representing some COM components to fail and may also cause COM component that are not multi-threaded to be accessed from multiple threads at the same time which can cause corruption or data loss.The current program structure is UI buttons that activate a BackGroundWorker object to do the processing and display progress in a progressBar.The only thing I seem to have added (as in I disable the code and it works fine) is code to print two reports.To sum up, I'm in the backgroundWorker thread, and I kick off an event "PrinterDoc1.Print()" which I've handled (there doesn't seem to be much flexibility on using an event for that), then later on in the backgroundWorker thread this error shows up pointing to the invocation of a delegate which updates a label on my form.

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Aug 27, 2010

I am getting this right after I bind grid. I called the db multiple times (no more than 5.) and Iábound those result to a datatableáand it then throws this error. I was not getting this error yesterday when i was running this program. And there doesnt seem to be anything I have not done before.

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LoaderLock Error Detected?

Apr 20, 2009

I'm using an AutoDesk Inventor View API (dont think it matters for this question) placed on my form. I can call files and have them open without issue, only when I open assemblies (drawing files) I get this error:

"LoaderLock was : Attempting managed execution inside OS Loader Lock. Do not attempt to run managed code inside a DllMain or image initialization function since doing so can cause the application to hang."

I dont expect anyone to know much about the API, however I assume this is a common error.

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Feb 23, 2012

Hi to all, i really need some help with a piece of code. Im developing an app, which receive midi TIMECODE (MTC) and shows it on a textbox. when i start the app, it runs ok, and shows the mtc on the textbox, but after a few seconds it crashes and shows an error:
"A callback was made on a garbage collected delegate of type 'MidiTesting!MidiTesting.MidiIn_Callback::Invoke'. This may cause application crashes, corruption and data loss. When passing delegates to unmanaged code, they must be kept alive by the managed application until it is guaranteed that they will never be called."

[Code]...

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Jun 4, 2012

I want to make an internet checker , but I don't know what's the problem with this PinvokeStackImbalance. Actually, the code was made for Visual Basic 2008, But I`m using Visual Basic 2010.

WebTest = CBool(InternetGetConnectedState(dwflags, 0&))

Where's the problem? Btw, it's a module.

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VB 2005 PInvokeStackImbalance Was Detected?

Nov 23, 2006

im trying to grab the Text from Yahoo Messengers Window in Microsoft Visual Basic 2005 Express Edition. I get this error when trying to grab the Chat Windows Text. Edit... think that was my code to set win Text but still i dunno why that error happens.

[Code]...

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VB Applications Gets Detected As Virus?

Feb 25, 2009

Then i downloaded C4F (Code 4 Fun) an application that's allow you to make Peer2Peer Applications using the PNRP.

So then i made a simple chat (Must say you do not need to fill in any code at all for this chat system) then i compile the source code to an *.exe file and everything seems fine at this stage.

But now the problem accours, when im am sending my chat application to my friends they got an alert about it's a virus im sending them. but when the file is on my own system it dosent say anything at all, and i have AVG Pro Edition & OutPost Firewall 2009 with lifetime license. and all my Anti Virus / Spyware Engine is up to date.

I have been writing on another forum on the internet but they just told me that my system was infected with a virus and that was the problem. s´┐Ż ive completely deleted my whole system, and installed the Windows XP Professionel again.

But i i stil have the same problem? any one knows whats going on here. i cant post anycode for this cause you don't need any code for making a Chat application in C4F, Basicly it loads a C4F project in to Visual Basic Studio 2008 with no source at all.

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VS 2008 RaceOnRCWCleanup Was Detected?

Mar 18, 2010

New one on me. RaceOnRCWCleanup was detected happens when I close my application. The complete error was:"RaceOnRCWCleanup was detected Message: An attempt has been made to free an RCW that is in use. The RCW is in use on the active thread or another thread. Attempting to free an in-use RCW can cause corruption or data loss."

I found a link for the error here[URL]...34(VS.80).aspx . That either went screaming over my head, or it is like listening to politicians, a lot of words that don't mean much.

My best guess is that I added a WMI query that runs periodically in a background thread, thinking that because it was a background thread I had nothing to worry about. I added some code to close the background thread before the application closes and so far,

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VS 2010 PInvokeStackImbance Was Detected

Feb 15, 2012

[code]A call to PInvoke function 'WindowsApplication1!WindowsApplication1.FEUSB::FEUSB_ScanAndOpen' has unbalanced the stack. This is likely because the managed PInvoke signature does not match the unmanaged target signature. Check that the calling convention and parameters of the PInvoke signature match the target unmanaged signature."

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Cross Thread Operation Detected

May 22, 2012

I am trying to load data using a backgroundworker using a code snippet that I found. I think that it would all work fine, except that I am getting an error that I am doing a cross thread operation. The task that I am trying to accomplish is loading data for a large dataset when a command (Run Operation) is called so that I can prepare the user that it may take a long time, and I can display a scrolling marque to show them that the program is not frozen. I am using a separate form to display the warning, an OK button, and a scrolling marque.[code]

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Detect Process And Not Running It When Detected?

Feb 9, 2012

trying to detect the process, if it is not running, then only run the process, but it still runs the process eventhough the process is still running :(

For Each Proc As Process In Process.GetProcesses()
Dim strProc As String = Proc.ProcessName & ".exe"
If Not strProc = "MemberSyncFBtoSQL.exe" Then

[Code]....

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Loader Lock Detected Twain?

May 29, 2009

I am using a TwainPro4.dll for scanning purposes in my VB.net application framework v3.5.When i run my application i get the below exception,

LoaderLock was detected
Message: DLL 'C:WINDOWSassemblyGACPegasusImaging.WinForms.TwainPro44.0.22.0__80d669b8b606a2daPegasusImagi

[code].....

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Movement Stops Once Collision Detected?

Jun 11, 2010

So, I am just trying to get the snake to move after it collides with the picture box. Right now, the snake is moved by using the arrow keys. However, once it collides with "the food", it won't move.

Imports System
Imports System.Drawing
Imports System.Drawing.Graphics

[Code]......

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Upload Code Being Detected As Virus?

Sep 13, 2011

Im trying to make a simple uploading program but when i run the program it is being detected as a virus and is being deleted. I have tried using 2 different ways of doing the ftp uploading but both are being deleted. the code im using is:

My.Computer.Network.UploadFile("file location", "upload location", "username", "password")
and
Dim request As System.Net.FtpWebRequest = DirectCast(System.Net.FtpWebRequest.Create("upload

[code].....

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.NET Program Being Detected As Virus On Remote System

Jan 3, 2012

I've developed a simple program and in it I 'copy-pasted' some code which makes a copy of the program executable in a particular path (docs folder) and sets registry to start the executable in windows start-up only.. Everything is working absolutely fine in my PC. But when I sent the exe to my friend's PC. Then the antivirus in her PC detected it as a trojan!

[Code]....

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How To Detect If USB Cable Is Inserted / Detected And Ready

Apr 5, 2010

I would like to detect the insertion, and completion of installation of a USB cable in VB2008 as two separate events. The driver gets installed prior to insertion of the cable.

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IDE :: Prerequisites Installed But Failed To Be Detected By MSI Installer

Aug 23, 2009

I am working on the msi installer built by VS(Setup and Deployment Project). I 've got everything else working like charm except the prerequisites of the project.

[Code]...

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Feb 4, 2012

im developing an application with an error log, when something goes bad, it must send through mail the error details so i can remotely fix and upload a new update with the fix.Im using Try Catch Exception but i have a lot of methods to include this option in, is there another way to do it without doing so much code?

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VS 2010 GetAsyncKeyState : Error 'PInvokeStackImbalance Was Detected'

Mar 8, 2011

I'm using the following code and it's bringing up this error 'PInvokeStackImbalance was detected'.

Public Class Form1
Private Declare Function GetAsyncKeyState Lib "user32" (ByVal vkey As Long) As Integer

[code]....

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A Potentially Dangerous Request.Form Value Was Detected From The Client?

Apr 3, 2009

I have a form that have many text fields and all are being validated, I also added the NiceEdit plugin to be able to format text in my text areas, but it is raising errors like:

A potentially dangerous Request.Form value was detected from the client Now I can simply go to the top of the page and in the page directive add ValidateRequest="false" but this will deprive me from all the validation that I really need, so how can I switch validation OFF for my text areas ???VB.net, ASP.net 3.5, VWD 2008 Express...

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Component To Trigger An Event When A Sound Is Detected Above A Threshold

Feb 17, 2009

I'm looking for an easy and free way to detect my dog's bark using a microphone attached to the computer. Basically, I just need a component to trigger an event when a sound is detected above a threshold...no fancy processing required. I've found some sound components, but they all seem too complicated for this application.

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Fun With Datagrids, Checkbox Checked Not Detected Until Selection Changed?

Dec 8, 2011

I have a datagrid that has a checkbox column and it all works fine and dandy except I'm not sure what the proper way to handle this situation is. When I check one or more checkboxes then loop through to find which ones were checked if I didnt move the selected cell before clicking go it will not detect the last checkbox checked. However if I change selection it does. Problem is I dont want to change selection, I tried unsBelow is the code I'm using to find which checkbox is checked. This will msgbox me the text in the second column of all the rows checked except the last one I checked

For
Each
chk_s In

[code]....

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Mar 25, 2012

I recently revised a VB ListView and removed one column of data, and failed to spot an If ... Then reference to data in the removed column. The code runs without the 'impossible' SubItem query being detected in my W7-64 desktop IDE, but crashes in the compiled/ installed version. In my older XP-32 laptop however the code error is trapped as it should be. I have noticed occasionally that other minor code errors are not trapped in the W7-64 system - is that normal, or has my W7 IDE been damaged somehow? Should I delete and re-install VS 2010 in the W7 machine ... not a trivial task!

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I got this monitor that can turn 90 degrees & another program will rotate the display when it detects it has been rotated, I have a few questions though.

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2.How can I make it actually rotate the screen when the message is detected that the screen has been rotated?

I would download the other software but it's just some bulky & slow software for a small thing, windows has the ability for rotation built in, just not the auto rotation feature like the program, I just need to detect the message & make windows rotate the screen.

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Feb 10, 2011

I've written my own program to assist other engineers with their work at my company. Some people have been able to install the program with no problems, others can't seem to get it installed and I'm having trouble figuring out why. They install .Net Framework 4 as this is the Target framework that was setup in the file, although I don't think I fully utilize all the features yet and not sure when I will. I will post the portion of the log that contains the error. If anyone decode some of this so I can track down the problem. I'm not sure if downgrading the necessary version of .Net would work or not, but didn't want to be changing that unless there was a good reason too.

PLATFORM VERSION INFO

ERROR SUMMARY
Below is a summary of the errors, details of these errors are listed later in the log.
* Activation of V:EAUsersRCFPE Files SetupPE Files.application resulted in exception. Following failure messages were detected:
+ Exception occurred loading manifest from file PE Files.exe: the manifest may not be valid or the file could not be opened.
+ Cannot load internal manifest from component file.

ERROR DETAILS
Following errors were detected during this operation.

CODE:

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Feb 4, 2011

why I am getting the following error? I have debugging enabled.Server Error in '/' Application.A potentially dangerous Request.Form value was detected from the client (strContent="<p>test</p>").

Description: Request Validation has detected a potentially dangerous client input value, and processing of the request has been aborted. This value may indicate an attempt to compromise the security of your application, such as a cross-site scripting attack. You can disable request validation by setting validateRequest=false in the Page directive or in the configuration section. However, it is strongly recommended that your application explicitly check all inputs in this case.

Exception Details: System.Web.HttpRequestValidationException: A potentially dangerous Request.Form value was detected from the client (strContent="<p>
test</p>
").

Source Error: The source code that generated this unhandled exception can only be shown when compiled in debug mode. To enable this, please follow one of the below steps, then request the URL:

1. Add a "Debug=true" directive at the top of the file that generated the error. Example:

<%@ Page Language="C#" Debug="true" %>

or:

2) Add the following section to the configuration file of your application:

<configuration>
<system.web>
<compilation debug="true"/>

[code]....

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Apr 22, 2010

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I have all the logic for logging into the application, it's just the checking for no activity over a given periodáand then forcing the user to log back in again that I'm not having much luck with.

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Nov 8, 2010

I use... $.post("/StoreHtml", { 'html': $("#txtHtml").val(), , function (data) { }); to store html user enters, but method above fails with an "A potentially dangerous Request.Form value was detected from the client". How do I encode the html before sending it? ... and how do I decode it in vb.net?

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Potentially Dangerous Request.Form Value Was Detected Dealing With These Errors Proactively?

Mar 17, 2010

I'm noticing this error more and more in my error logs. I've read through the questions here talking about this error, but they don't address what I would like to do (see below).

I'm considering three options, in the order of preference:

1) When submitting a form (I use formviews almost exclusively, if that helps), if potentially dangerous characters are detected, automatically strip them out and submit.

2) When submitting a form, if potentially dangerous characters are detected, alert the user and let them fix it before trying again.

3) After the exception is generated, deal with it and alert the user.

I'm hoping one of the first two options might be able to do somewhat globally...I know for the 3rd I'd have to alter a TON of Try-Catch blocks I already have in place. Doable, but labor intensive. I'd rather be proactive about it if at all possible and avoid the exception all together.

Perhaps one approach to #1 would be to write a block of code that could loop through all text entry fields in a formview, during the insert/update event, and strip the characters out. I'm ok with that, but I'd rather not have to heavily alter all my Insert/Update events to accomplish this. Or maybe I just create a different class to do the text checking/deleting, and only insert 1 line of code in each Insert/Update event. If anyone can come up with some example code of any of these approaches that would be a

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Jun 7, 2012

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My

Dim country As String = Me.geo.lookupCountryName(DataGridView1.Item(1, count).Value)
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Jan 20, 2012

I have a class with a static list of keys, and I have a static method called Remove() that removes a key from that list.Now what I understand from the contracts post conditions is that as the programmer of the class, I guarantee that the current public method does something specific, in this case : removing the element of the list.

Here's what I've written:

private static List<Keys> m_usedKeys; // private list of keys
public static void Remove(Keys _key)
{

[code]....

What I'm trying to "Ensure" here, is that the Remove() method removes the key for real from the list (Yes this might be a trivial example, but I get the error there.)when I write the Contract.Ensures() line, VS2010 gives me the following error :

Error 3 Detected expression statement evaluated for potential side-effect in contracts of method 'LibJungleTimer.KeyBind.Remove(System.Windows.Forms.Keys)'. (Did you mean to put the expression into a Requires, Ensures, or Invariant call?) C:UsersJoelDocumentsProgrammationJTJungleTimerLibJungleTimerKeyBind.cs 51

I think this error says that the expression m_usedKeys.remove(_key); has a potential side-effect. In fact, it has a side-effect, it removes a key from the list!If I try to write something like this instead :

Contract.Assert(!m_usedKeys.Any(x => x == _key));

well it compiles fine.

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Sep 25, 2009

which compiler errors would be detected out by VB compiler?

I have searched out some compiler errors list for C#, for example, see the website at [URL]

MSáprovided us the information about C# compiler error. Does MS provideáVB compiler errors information as well.VS

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I have a problem detecting whether one of the arrow keys is pressed, all the other keys seem to be detected apart from the arrow keys??? I have set key preview to True........ It detects the arrrow keys BUT ONLY if I have NO other controls on the form??? example..

Me.Text = e.keycode

It works, but then if I add a button for example, it stops.

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