VS 2005 - How To Close Or Stop Thread
Apr 18, 2009How can I close or stop a thread. For example
Dim trlisten As Thread
Is it trlisten.Stop? or trlisten.Close? or what?
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Way To Stop A Thread
Nov 4, 2011I'm having a hard time stopping a thread. Whenever i close my main form the application doesn't stop because there is a thread still running. I tried every solution I can find in the web but i can't make it work.[code]...
View 8 RepliesApplication Does Not Stop On Close?
Nov 12, 2009vb.net application, when the user closes the last form (the code is me.close) the application looks to stop, but it is still running in taskmanager?
View 17 RepliesWant To Run Project So None Can Close Or Stop It
Mar 15, 2012i have a small sample seral comms sample project and its working great .however i want it to run such that it will run continually 24 hours a day and not stop. I do not want any unauthorised persons to close the system, or stop it in any way.
View 4 RepliesClose A Topic Or How To Stop Replies
Feb 23, 2009Can anyone tell me how to close a topic or how to stop replies?
View 1 RepliesHow To Stop An Application/program Or Close It
Feb 15, 2012Guys anyone know how to stop or close a running program remotely through a vb.net program? am already aware on how to run or open one using the System.Diagnostics.Process.Start method. I would be needing it in my next projec
View 8 RepliesRun Project In Background So None Can Close Or Stop It
Mar 6, 2012i have a small sample seral comms sample project and its working great .however i want it to run such that it will run continually 24 hours a day and not stop. I do not want any unauthorised persons to close the system, or stop it in any way
View 2 RepliesStop A Form Close Event?
Feb 19, 2008What I'm trying to do is your basic "You have made changes... yes/no/cancel" messagebox to show during a form closing event, and when they click cancel to stop the form from actually closing (Whereas yes would save and close, no would just close).
[code]...
Can Immediately Stop A Thread From Running .NET
May 25, 2011I have the following code running in a thread to enumerate the local machines in the active directory. This takes some time to complete (about 5-10 seconds) so if the user quits the application before the enum is complete the application takes 5-10 seconds to quit. I tried thread.abort but because it is waiting for For Each SubChildEntry In SubParentEntry.Children to complete it doesn't abort until this returns.
Dim childEntry As DirectoryEntry = Nothing
Dim ParentEntry As New DirectoryEntry
ParentEntry.Path = "WinNT:"
[code].....
Get The Thread To Stop Without Stopping The Application?
Aug 12, 2011I have an application in which there is a do...loop. I need the do...loop to perform some code and then stop for .1 of a second. When i try using System.Threading.Thread.sleep(), a wait cursot comes up and the application stops working. I was wondering if there was any way to get the thread to stop without stopping the application.
View 5 RepliesService Will Not Stop While Thread Is Sleeping?
Feb 13, 2012I have a VB .Net service, which uses System.Threading instead of a timer to basically do what a timer should do. My problem is stopping the service while the thread is in its sleep state. See the code below:
Imports System.Threading
Public Class AService
Private stopping As Boolean[code].....
If say 1 minutes after the service starts, it can not be stopped until its 15 minute interval ticks and the thread wakes. Is there any way to catch the signal that the service is attempting to stop, and interrupt the thread?
How To Make Shortcut Key To Stop Thread When Running
Dec 27, 2009I'm currently making a bot that points and clicks. It works great! The only problem I have is stopping the bot.How could I make a shortcut key that stops the bot while it's running?
View 14 RepliesStop All Threads Or Just The Thread That The Statement Is Executed In?
Dec 12, 2010I'm working with vb.net 3.5SP1 /VS2008. I'm familiar with windows threads from C++ but I didn't do it since the 90s.I have 5 threadpool calls (ThreadPool.QueueUserWorkItem) that do some complex work (they read info from different web pages, regular expressions, etc) and each updates different columns in a data-grid view. They pause for 1 second between each web read with thread.sleep (not to overload the server). My issue is that some of the threads do not complete. I get for example 3 results when I should have 8. Sometimes it works fine. This is an older 3.0Ghz HT machine, I want to test it on the lowest common denominator(and that is all I have ). I tried using Monitor.Enter(ListView1)it seems to help but it is hard to tell. I tried using the thread debug window but it is not really helpful, it seems do disappear during execution. If I remove the threads I always get my data. I'm wondering if something is being blocked? Is there a way to debug this?
Also, does thread.sleep(x) stop all threads or just the thread that the statement is executed in?
Turn Off / Stop ProgressBar When Thread Completes
Sep 3, 2010My program starts a lengthy background operation in a separate thread, and the main thread makes the ProgressBar start scrolling. My question is, how do I tell the main thread how to know when the background thread has stopped, so it can turn off the ProgressBar?
View 8 RepliesClose Form In Thread?
Oct 16, 2010When I am inside a thread, I cannot simply call Me.Close or I get cross threading error!So I need to use some code like this and then call SetClose()
[code]...
Multithreading - .Net: Does Debug.Writeline Stop Thread Execution
Aug 19, 2009I have a vb.net application that uses threads to asynchronously process some tasks in a "Scheduled Task" (console application).We are limiting this app to run 10 threads at once, like so:
(pseudo-code)
- create a generic list of 10 threads
- spawn off the threadproc for each one
- do a thread.join statement for each thread to wait for the longest running one to complete.
What i am finding is that if the code called by the threadproc contains any "Debug.Writeline" or "Trace.Traceinformation" statements, the thread hangs. I can see the thread in the Debug - Windows - Threads window, and switch to it, but it highlights the debug.writeline statement and never gets past it. is there something special about the Debug or Trace statements that make them non-thread-safe? Any idea why this would hang things up? If I leave the debug statement in, the thread never completes. If I take the debug statement out, the thread completes in less than 5 seconds.
Close Button In A Thread Run Time?
Aug 16, 2009i am having a thread to keep the application in sleep for some time after the application process a data.
[Code]....
Currently, the application gets hanged if i press close button when thread.sleep() is running. How can i make the close button to close the application even when the thread.sleep is running.
Open A WPF Window In Its Own Thread Then Close It?
Sep 16, 2010I am trying to give some user entertainment, and show a "please wait" window, with Marquee, during the loading of a separate complex Window. I am attempting to do this by loading the Window in a new thread, like this:
Public Function ShowPleaseWait() As System.Threading.Thread
Dim PleaseWait As New System.Threading.Thread(AddressOf LoadPleaseWait)
PleaseWait.SetApartmentState(System.Threading.ApartmentState.STA)
[code]....
In the calling code, it calls ShowPleaseWait and saves the Thread for later.. To close the window, it calls Thread.Abort, on the saved thread. This in turn will causes it to enter the Catch. I have tried, many different ways, with and without the catch.This works incredibly, the first time it is called. However, additional calls will fail at window.Show() with the exception: The calling thread cannot access this object because a different thread owns it..This really puzzles me as the window was created one line above the call to window.Show and is local. How is it owned by a different thread? How can I fix this?
Close Winform Dialog Box From A Event On A Different Thread?
Apr 1, 2011I actually have gotten the events firing like I expect except for trying to close the dialog window.
Background: I have a wrapper around my "Jabber Client" that sets the delegates for the client wrapper and basically generates a messageProcess event. This event is wired in the main program Class[code]...
Perform A Cross Thread Calling Of Close() Function?
Mar 21, 2011when I try to perform a cross thread call to fill a text box with messages with the following code I have no problems:
Delegate Sub SetTextCallback(ByVal [text] As String)
Public Sub SetStatusBox(ByVal [text] As String)
If Me.statusBox.InvokeRequired Then
[code]....
However, I am having problems when I use the following code to do a cross thread call to close a form. The form just hangs there.
Public Delegate Sub setFormClosing(ByVal ctrl As Control)
Private Sub closeForm(ByVal ctrl As Control)
If Me.InvokeRequired Then
[code]....
Leaving Trash Behind - Stop - Removing A Copy Of Program Shown On The Task Manager After Close
Jan 3, 2009Need help removing a copy of my program shown on the Task Manager after I close.
I must kill a conflicting program that cannot share the COM port and then reinstate when myprogram ends. To reinstate I use: System.Diagnostics.Process.Start(conflictingPath & conflictingProgram)
In the last line of my Form1.Closed I try to end all with:System.Windows.Forms.Application.Exit()
Not working - each time I run this program it does kill the conflicting program, can do its dialing function and upon closing reinstates the conflicting program. But each time another copy shows under Task Manager.
VS 2005 WebBrowser1 - Stop Pop Up Or Get Pop Up Url?
May 2, 2010I made the typical web browser, but when I click on some links instead of it opening in my program, it opens up IE. How can I simply make my program the default web browser to use?
View 9 Replies[2005] Start/stop Iis In .NET?
Oct 3, 2008how do I do start/stop iis in .NET?
View 11 RepliesVS 2010 Error - Cross-Thread Operation Not Valid: Control TbPlaca1 Accessed From A Thread Other Than The Thread It Was Created On
Aug 13, 2010In one application, I need use 4 simultaneous threads.When the threads finished, I need to update the text of a TextBox.So, I create 4 Textbox, and I wanna the threads change the text to FINISHED.Each thread change one distinct TB.I use this "example"
Dim Terminados As Integer = 0
Private Sub frmEnviarMensagem_Load(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles MyBase.Load
Timer1.Enabled = True
Timer1.Start()
[code]....
The problem is, I have an error in the red lines.The error is: INVALIDOPERATIONEXCEPTION "Cross-Thread operation not valid: Control tbPlaca1 Accessed from a thread other than the thread it was created on."I don't use cross threading. Each TB only was accessed for the correspondent thread, and for the "main program".
Cross-thread Operation Not Valid: Control 'Panel1' Accessed From A Thread Other Than The Thread It Was Created On." ?
Nov 3, 2011This is the error message I am getting:
"Cross-thread operation not valid: Control 'Panel1' accessed from a thread other than the thread it was created on." The reason I am getting this error is because I am opening up a new form and then calling these three things:
Panel1.Show()
Label1.Show()
Label2.Show()
why I get this error message because it doesn't occur normally if I open Form2 after closing Form1, it only occurs when I open Form2 after closing Form4.
Error - Cross-thread Operation Not Valid: Control 'txt1' Accessed From A Thread Other Than The Thread It Was Created On
Jul 21, 2009I have done a program using vb2005 to display reading from my microcontroller bs2 board but have encountered some problems. My code are as follows.
Dim Stop_Rx As Boolean
Private Sub btnRead_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles btnRead.Click
SerialPort1.Open()
[code]....
I've encounter an error which is, (Cross-thread operation not valid: Control 'txt1' accessed from a thread other than the thread it was created on.)
Error : Cross-thread Operation Not Valid: Control 'l_users' Accessed From A Thread Other Than The Thread It Was Created On
Jun 21, 2012When my client try to connect to server I'm getting this error : Cross-thread operation not valid: Control 'l_users' accessed from a thread other than the thread it was created on.
Private Sub _socketManager_onConnectionAccept(ByVal SocketID As String) Handles _socketManager.onConnectionAccept
l_Users.Items.Add(SocketID)
End Sub
Threading Progress Bar In .net - Thread Operation Not Valid Control 'ProgressBar1' Accessed From A Thread Other Than The Thread It Was Created On
Feb 17, 2012Would anyone be able to help me here please. I'm fairly new to VB.net and threading so im just trying to figure out what is happening.When I debug this I am getting the error thread operation not valid: Control 'ProgressBar1' accessed from a thread other than the thread it was created on.
I'm a little lost as to why the error is occuring or how to fix it. I've had to put the progress bar in a separate thread otherwise the GUI crashes
[Code]...
Waiting For Threads - Thread.join Suspend Execution Of Code On Calling Thread Until Spawned Thread Finishes Or Is Aborted
Sep 2, 2010My understanding is that thread.join will suspend the execution of code on the calling thread until the spawned thread finishes or is aborted...
With that in mind, I tried this:
For i = 1 to 50
threads = New Thread(AddressOf test)
threads.IsBackground = True
threads.SetApartmentState(ApartmentState.STA)
[CODE]...
However, the rest of the code runs when the loop finishes, not waiting for all the spawned threads to finish. Since the rest of the code needs the threads to finish (otherwise the rest will error).
Cross-thread Operation Not Valid: Control 'Autocad' Accessed From A Thread Other Than The Thread It Was Created On
Jun 6, 2010I have written an application that loads a form - frmCad as well as AutoCad. It does this via a class which detects when AutoCad quits.
Friend Class CadApp Private WithEvents AppObject As AcadApplication... Private Sub AppObject_BeginQuit(ByRef Cancel As Boolean) Handles AppObject.BeginQuit RaiseEvent Quit() End SubEnd Class
My main class loads frmCad as well as CadApp.
Public Class Cad Private WithEvents frmCad As CadForm Private WithEvents app As CadApp... Public Sub ShowForm() If frmCad Is Nothing Then frmCad = New CadForm frmCad.Visible = True End Sub... Private Sub app_Quit() Handles app.Quit frmCad.Dispose() frmCad = Nothing .... End Sub
When I debug the program, it stops at frmCad.Dispose()The program continues to execute, but all the code after it fails to work.Looking more carefully I get an error message which contains:-Cross-thread operation not valid: Control 'Autocad' accessed from a thread other than the thread it was created on.