FileSystemWatcher Doesn't Activate - Error: ContextSwitchDeadlock
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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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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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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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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Mar 19, 2009
I am getting the following error, when I create a file in the folder that I am watching using FileSystemWatcher Control.Message="Cross-thread operation not valid: Control 'txt_FolderActivity' accessed from a thread other than the thread it was created on." Source="System.Windows.Forms"
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Dec 13, 2010
When I run the code to setup the watcher everything run ok. When A new file is detected, I get the messagebox with no problem. After I click 'ok', the vb6 app that called this crashes with no error.[code]......
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Nov 4, 2010
I've been whining for several months about the way Windows 7 prevents application exceptions from actually occurring, and arbitrarily assigns "compatibility settings" without actually detailing what those settings are, even during Visual Studio Debugging operations. Am I just completely ignorant to some setting I can toggle to turn all that garbage off and make Win7 act like an operating system that wasn't designed for a 2 year old? It never hurts to try. In a worst case scenario,
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Sep 23, 2010
The error it has is that when one of the text boxes is changed the code changes all of them triggering every single function to activate. Is there a simpler solution other then recoding it from the start? also each different Private Sub is identical basically.
Public Class Form1
Private Sub K_TextChanged(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles K.TextChanged
Dim T As Double[code]...
I know the code is very brute forced & sloppy but its the only way i really know how to do it.
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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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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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Aug 27, 2010
I have a filesystewatcher object. On it`s event it runs a procedure which fills a treeview with a data. I had problems with treeview methods, but when I run them using invoke method everything is ok. But I still have one problem. When I load the form for the first time, everything works fine. But, when I then close the form (me.dispose, me.close), and load it once again, when Filesystemwathcer start the procedure i have an exception "invoke or begininvoke cannot be called on a control until the window handle has been created" trying to run a treeview.invoke method?
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Jun 25, 2010
Whenever I have an error, the program doesn't crash. It just stop executing code. The error message goes to the debug window (which I can't see until I end the program). If I have a button for example I can still click this and execute the code inside it.
I never thought I'd be asking this, but how do I make my programs crash again?
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Dec 8, 2011
I am trying to add a registry key in to the file "MyApp" which doesn't yet exist in the registry key directory, when I try and write this key however I get an error from the debug console telling me the "NullReference was unhanded". If I go and manually make this folder it works brilliantly, I thought that this code would make the folder as well?
[Code]...
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Jun 3, 2009
this is strange, I've got a macro with an array containing several registry keys.
And I want to insert the values of these into predefined bookmarks in a Word document. This works great if the key is there, but if it isn't, I want the code to skip that and continue trying the next one in the array. I've got the code that looks like this:
[Code]...
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Jul 4, 2010
I have creating timekeeping application, I was used drag and drop for my datagridview. During build I can add, edit and delete records. But when I published and run there was an error saying (see below). [Code] When JIT debugging is enabled, any unhandled exception, will be sent to the JIT debugger registered on the computer, rather than be handled by this dialog box.
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May 6, 2012
Mine is a simple conexion problem but I dont understands what's happening I have another form in the same project which has no problems at all, I desided to create a form to use it as a base form named plantillav only to duplicate forms and intance the others from that one I put it's Modifiers Property = Protected in ortder to modify property values in the other ones I don't know if the process generated a failure.
I created the following strconn:
Public
Class
clientesc
[CODE]...
This table was exported from phpmyadmin (wamp) so it means is created and even with registers inserted directly from console, the problem is when I send from the application, with the following error that indicates that the name of the field doesn't exist or is not well written; Unknown column 'code_empleado' in 'field list'.
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Sep 2, 2009
I get this error when trying to populate a DataGridView.The last sentence of the error text says to handle the DataError event but I'm not sure how to do that. A Try...Catch doesn't work.
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May 18, 2012
I have this function I put together with help online and it works just fine until the program runs over night. I don't think it is night time that is the problem, just the long run time. I take bitmaps and place text on them then convert them to icons so that the image can be used on the system tray.
[Code]...
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Oct 21, 2009
If I use IE I can visit the website I want and click the 'Next' button and life is good. If I open that same website using the webBrowser control and click the 'Next button I get a javascript error message.I'm not doing anything in the code to manipulate the website. My goal, eventually, is to have some level of automation; but at this point, I get the javascript error and a pop-up and it screws everything else.
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May 10, 2010
im trying to generate an error message to the user to let them know a file doesnt exist.So far ive got the user to enter the file name into a textbox, they click search and if successful will load a new form with a PDF file reader built in( AxAcroPDF1 )everytime i enter the right file name i get the file loaded, if enter the wrong name the File page still loads with no pdf and no message saying file doesnt exist.
Private
Sub PictureBox1_Click(ByVal
sender As System.Object,
ByVal e
[code]....
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Dec 31, 2011
I'm trying to get all nodes below but I am getting an error message of: Overload resolution failed because no accessible 'GetAttributeValue' accepts this number of arguments.
[Code]...
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Nov 13, 2009
I want to check if an IP address can be resolved to a hostname.I figured I would use System.Net.Dns.GetHostEntry as System.Net.Dns. GetHostByAddress is shown as obsolete in VS2008.
However,if I specify an invalid IP address to System.Net.Dns.GetHostEntry the HostName property equals the IP address I gave. If I use System.Net.Dns.GetHostByAddress it, rightly, gives a resolution error.I don't mind continuing to use System.Net.Dns. GetHostByAddress but is there any way to have System.Net.Dns.GetHostEntry throw an error if the IP address cannot be resolved to a hostname (other than by checking if the IP address given equals the hostname returned, I mean)
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Mar 15, 2009
I've used this in a couple of places and it simply doesn't work. Despit the try event, VB.Net still crashes or throws up an error.
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May 14, 2010
I have below installer class to ngen app after installation and I'm getting several errors.
Imports System.Collections
Imports System.ComponentModel
Imports System.Configuration.Install
'This line gives warning: Namespace or type specified in the Imports
[code]....
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Nov 30, 2009
I've one VB.net 1.1 based windows app. I recently added the app.config files. In code it works fine. But, when I compile the application, VS 2003 doesn't generate the appname.exe.config.(I read on google) I manually copied the app.config file to the Release folder. But the code is giving error that the file doesn't exists.
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May 2, 2010
I'm setting up a simple XML read-write demo (VB Winforms) in Visual Studio 2010 Premium (tried in both the RC and RTM) and added:
Imports System.Xml
Result: Error Namespace or type doesn't contain any public members or cannot be found...
VS 2008 equivalent example recognizes the Imports statement fine.I know this has to be me, but I'm stumped.
Note: I tried this with the app targeting both .Net 3.5 and 4.0. Same result.
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Feb 20, 2012
I have my application watching my desktop, pictures, music, and document folders.[code]What would I need to put into logrename() in order for it to automatically upload the renamed file onto my server?
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Jul 31, 2010
I added FileSystemWatcher in Form1_Load like this -
Private Sub Form1_Load(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles MyBase.Load
....................
[code]....
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Apr 7, 2011
I can't seem to get a FileSystemWatcher to work, this is what I currently do.
Private Sub FileSystemWatcher1_Changed(sender As System.Object, e As System.IO.FileSystemEventArgs) Handles FileSystemWatcher1.Changed
MsgBox("Directory has changed")
End Sub
I have the filesystemwatcher path in my desktop. But when I create, re-name or delete something in the desktop it dosn't do anything, not even giving an error. I filter FileName, DirectoryName and LastWrite (the defaults).
The FileSystemWatcher have the EnableRaisingEvents set to true. So don't really know what the problem is.
I've tried google without any luck, all I found was people having problem that the FileSystemWatcher executed twice.
So do I have to do anything more on the code to get it to work?
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