Use "System.Threading.Thread.Sleep(15)" As The Delay Code But Freeze The Form
Jul 19, 2011
I've been trying to use "System.Threading.Thread.Sleep(15)" as the delay code but if freeze the form. I used this "Location.Refresh()" where location is the name of the form, but it didn't give me what I need. This code is going to work on a ProgressBar while typing and the value of the progress bar change while typing. The progress bar jumps to the new value and I want it to move. So I thought about puting it in a "For ... Loop" but the whole form freezes.
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Dec 31, 2009
I have 5 Picture Boxes, each picture box has an image but all 5 of them has a visibility of false. I have a button, when clicked will show 5 of the images. But showing the 5 images with a delay. So it's going to be
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May 25, 2010
Currently I'm using System.Threading.Thread.Sleep(5000) to let my app pause/sleep for some time. This works great but I can't open my app anymore when it's sleeping and it uses about 25% of my CPU. I guess there must be a better way to do this. I also tried using a timer but that didn't work out to well for me..
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Jul 20, 2010
The coding that I have a problem with might make people think that I am creating some malware. So the project I am doing is associated with iTunes. iTunes allows people to have one library. There is another way, but it is very confusing to some people, and very unreliable. So my project is that I will allow people to have multiple iTunes libraries on one computer. So the problem is this. In order to have an option to choose your library, I gotta make sure that iTunes is not running.
So this is the script:
Private Sub CheckAndCloseiTunes()
retry:
'Custom class that includes the function to safely close iTunes
Dim Processes As Process() = Process.GetProcessesByName("iTunes")
[CODE]...
So when I use the Threading.Thread.Sleep(2000) code, the form becomes unresponsive.
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May 13, 2012
I have this little application that is using a System.Threading.Thread.Sleep, application runs great but Windows thinks the application is not responding even though it is running.
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Apr 14, 2012
I want to have My.Settings.Delay in seconds not milliseconds adding the 000 for the user. I tried My.Settings.Delay + 0 + 0 + 0. but can't sort how to do this.
Private Sub Button2_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button2.Click
Dim var As Integer
Dim startVal As Integer
[code]....
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Aug 22, 2009
I cant get System.Threading.Thread.Sleep to work..[code]
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Apr 22, 2012
i have a web browser control, that refreshes pages on a loop after calling a few subs, i need to create a delay in the loop so that the page has a chance to refresh and redisplay before it loops again. i tried the code below, but it seemed to freeze the entire form, elements including, so the web browser didnt refresh before the loop, so how could i create a non form-freezing delay for a loop?
For count = 1 To 20
WebBrowser1.Navigate("URL")
simcheckcheck()
[code].....
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Mar 13, 2010
i got inside
WebBrowser1_DocumentCompleted sub
the code below
WebBrowser1.Document.GetElementById("form").InvokeMember("click")
Call ProcessNextLine()
when it clicks this button it should load another page(Like log in)
Call ProcessNextLine()
takes next line from txt file (It's url) + navigate
but I want it to wait let the page load before calling "Call ProcessNextLine()" I tried System.Threading.Thread.Sleep not working?
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Mar 22, 2010
Im trying to do this
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But it will just skip to the last status (Label3.Text = "Status: Welcome")
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Aug 26, 2010
I have another problem with my bot.
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After the 7th line I need a pause until a submit button pops up on the screen. The submit button is hidden until the getelementbyid.focus is run. I cant use webbrowser_documentcompleted because the submit only unhides itself, and I cant use Sleep() because that just stalls the whole block.
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Apr 26, 2009
I am trying to learn how to use Thread.Sleep properly as the main problem I am facing when using it is the fact that the window/form on run time would not move until after the sleep time has elapsed. Did I miss something? Below is a short example of what I want to achieve.
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Oct 24, 2009
What is the difference between creating a thead using BackgroundWorker and creating a thread using System.Threading.Thread?
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Apr 25, 2012
What is the difference in using: BackgroundWorker1 or System.Threading.Thread
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Nov 27, 2009
is there anyway to sleep a thread for a "tick". i.e. the tick in StopWatch.ElapsedTick. right now the best i could achieve is this thread.sleep(1). i need it faster
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Oct 14, 2009
I have a string in which for sure there is a date in the following format: YYYYMMDD. So, to identify 14 October 2009 I'll find 20091014.Having this string, how can I format into System.Threading.Thread.CurrentThread.CurrentCulture.DateTimeFormat.ShortDatePattern?
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Apr 21, 2009
I am creating an IDE for a game script with similar functionality as the Visual Studio IDE (at least, some of it). The game script consist of code that looks visually a bit like C code. It uses braces to define the start and end of a 'class' and uses nested braces to define the start and end of an 'event' in a class.
What I want finally is to have two Comboboxes above the text editor, one that lists each Class and the other listing each Event. The comboboxes should also show the Class and Event that the caret is currently in, just like in Visual Studio.I have attached an example of such a script (you can open it with Notepad).However, here is a short example where you can also see how I "defined" classes and events:
class1
{
event1
{
[code]....
As you can see, the classes are the 'names' of each block of code, defined by matching braces { }. The events are the names of each nested block of code, also defined by matching braces { } but inside a class. There is only one level of nesting.As you can also see, the layout can follow the standard C-style layout, or a slightly different layout (using the opening brace on the same line as the class/event name), or even a completely chaotic mess. As long as the braces match correctly, the code is valid.So in short, the large blocks are classes, while the nested blocks are events.
What I want to do, is parse an entire script, and store all the Classes (and eventually, also all the Events, but let's forget about them for now). I want to store the Class name, start position (defined as the start index of the name), end position (defined as the index of the closing brace) and the full text (defined as the text between start and end position, so including the name).
vb.net
Public Class clsClass
Private _Name As String
[code]....
The code works basically by finding every first opening brace (the opening brace of each CLASS, not event), and then loops through the class (using a brace counter to keep track of the nested braces) until it found the last closing brace. It then stores the name, start, end and fulltext in a new clsClass and adds it to the list to return.
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Feb 17, 2012
Would 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
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Dec 20, 2009
Is there is way to delay loops without using (Sleep or timer) in VB
Because on java you cant do something like this
For(i = 0; i< 100; i++) {
Event.Wait(3000)
Animate(i);
}
I dont want to use sleep because your control is dead while is at sleep And using timer waste memory and process timer plus more coding is needed!
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Apr 27, 2011
I am writing an ASP.NET class that interfaces with an external application. The flow of the transaction between the web server and this application is as follows:My object writes a file to a directory.The outside application detects this file and processes it. This can take between 1-5 seconds.The outside application writes a response file to the same directory.My object detects the response file and parses the results.The 1-5 seconds it can take for the external application to process my file is my problem. The most straightforward way to wait for the file seems to be something like this:
Do While Not File.Exists(f)
Thread.Sleep(500)
Loop
Of course, Thread.Sleep() completely locks up the rest of my website until the outside application processes the file. Clearly, this is not a workable solution.How can I effectively "wait" for my file to be processed without locking up the rest of my website?
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May 20, 2009
I know there is always better ways of doing things. Normally when you create a thread and I want it to pause/sleep for a set amount of time I use the <Object>.Sleep(1000) but this is frowned upon in .Net2+.
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Mar 31, 2011
I have a frm_Main, which starts a thread. The thread then goes and calls a module, which has a thread.sleep() in it. This causes the mouse to freeze up while it sleeps, despite being called by the child thread. I thought this would have be on the thread time-slice? However it is causing my form to freeze for the sleep duration.
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Jul 31, 2011
to some server via an UdpClient. However, I need to make sure that all commands send are separated by a 1 second delay. If there is no delay, two commands send within this 1 second timespan will not be received both; only the first or the second command will get through.he commands are sent in a background thread at the moment, because it might take some time before the command is sent. I keep looping until the command has been sent, like this:
vb.net
Public Sub Send(command As String)
Dim bytes = Me.GetCommandBytes(command)
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Oct 27, 2011
I have a few forms that have a lot of really intensive updating along with a great deal of user interface (text boxes, button clicking etc) Is it possible to open a separate form as a separate UI thread from the start up form that called it to "show" or open or whatever the new method might be?
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Jun 10, 2010
im trying to terminate a threading.thread using thread.abort the thread runs a download connection so is usually in the middle of socket.recieve or socket.send or socket.connect when aborting i just want to terminate the thread no matter what thread.abort raises an MDA excpetion. so i ticked it off in the debug exceptions menu. now it doesnt raise an exception, but the thread simply wont terminate. my program wont close unless i press top in the debugger.i cant pause downloads because i cant terminate the thread this code wasn't working?
Dim vT As Threading.Thread
For Each vT In clsDownloader.DownloadThreads
If Not vT Is Nothing Then
vT.Abort()
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as for the exception concerning threads being aborted from other threads being dangerous, how is it possible to send a message from a main thread to another thread to abort itself? as far as i know the only way to a abort one thread from another is to just kill it (because i dont know of ways for a thread to communicate with another).
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Oct 19, 2010
I'm experiencing an error which complexity and way to approach I can't quite understand.. It looks like two threads not able to work simultaneously.The first thread is the normal program thread, and the problem occurs when the user clicks a button. This sends some messages through a method (PlaceOrder) of an API library object. This method is called 2-3 times in a loop. Handlers have also been added (on program startup) to receive callbacks on events raised by that object, and this is the 2nd thread that contributes to the error.
The error seems to occur when the PlaceOrder method is called while receiving an event from this same object.The result is that the UI freezes. I can trace the error in two places. If I trace the first thread (which is the initial program thread); the freeze occurs when reaching the lock(this) line, in the API-object class. If I trace the callback event, the handlers of this event try to invoke a RichTextBox on the form, and the freeze occurs on the line <RichTextBox>.Invoke(....), as indicated below.
The thing is that when pushing the button, there is a loop which calls the method of the API-object 2-3 times. And the first time succeeds, but the 2nd time it seems to crash in some way with the callback. It would be nice if I had made some silly mistake with the invoke code, but I don't think I have, as it updates fine prior to the error.. I'm not sure, but it may be relevant that it's in fact the same object, so early in my program I add this event listener (which is the one that updates the RichTextBox):
AddHandler ibclient.Error, New EventHandler(Of ErrorEventArgs)(AddressOf client_Error)
..while later, related to the freeze, I have:
ibClient.PlaceOrder(....)
But I'm handling a lot of calls forth and back other than these, and haven't experienced any problem before.it doesn't give any exception or error message, it just freezes.The invoke stuff in the form code, which should be as per trusted examples: (Freeze occurs at blue highlight)
Private Delegate Sub SetRichTextBoxInvoker(ByVal message As String)
Private Sub OnLogUpdate(ByVal message As String)
If Me.rtbTwsMessages.InvokeRequired Then[code]........
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Jul 29, 2009
I wanna sleep a second thread of BackgroundWorker. I tried to use Me.Dispatcher.Thread.Sleep(500) in DoWork event, but it fails.
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Aug 22, 2011
Im having a problem with putting a thread to sleep...
othread.sleep(system.threading.timeout.indefinite)
The error is :"Access of shared member, constant member or enum member or nested type through an instance, qualifying expression will not be evaluated"
The code is:
Code:
Imports System.IO
Imports System.Threading
Public Class In_Process
[code].....
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May 5, 2012
[code]I send the Thread via Thread.Sleep to sleep mode when nothing happens here. Does this affect the TCPListener in his work somehow and what happens to an incomming connection while the Thread is in sleep-mode?
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Apr 5, 2011
Ok so I have been playing with VB.net and brainstorming ways to accomplish launching a thread reliably every 60 seconds reguardless of how long the prior thread took to do it's work. Here is my question. Given the following code:
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My assumption for this output would be that the time between each line would have to be exactly 5000 milliseconds plus the time it takes to execute the rest of the loop which could vary given that there could be an unknown delay due to disk IO. My problem is that looking at lines 10 and 11 and subtracting gives me a difference of 4,958 milliseconds. So my question is what the heck is going on there? How is it possible to get a difference of less than 5000 milliseconds when I have told the thread to sleep for 5000 milliseconds before completing the process. What am I missing?
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