VS 2008 : Stop A Process That Runs In The Background?
Nov 26, 2009
I develop an appliaction which is running a process in the background. This process is "forked" from the application (I'm not using threads). The process may take a few minutes while the 'father' application is waiting to the process output, so I'd like to enhance the application with the following:
a) a "Stop" button (like in IE, FireFox) to stop the process in background
b) A status bar that displays what's going on while the process is running in BG.
how to draw a button or status bar of course... I mean how VB.NET handle with stopping or displaying while something else is running in background and how to do it.
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Jul 26, 2011
i've the need to close an ffmpeg conversion started in background with the vb.net process.start.I've seen that an ffmpeg could be closed by hitting the key 'q'.How can i send the 'q' key to the running ffmpeg process?
i intercept the process with this code:
Dim pProcess() As Process = Process.GetProcesses
For Each p As Process In pProcess
If p.ProcessName = "ffmpeg" Then
[code]....
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Jun 9, 2010
I got a problem here. How can I let the program run in background when I click the minimize button on the right up corner?While it is running in background, I also wish there will be a small icon shown in the system tray.
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Jun 28, 2010
this is really bothering me, my program seems to run faster whenever I click on some other window so the form doesn't have focus. What is going on and how can I fix this?
Here's the troublesome section:
ListView1.Items.Clear()
'loop through the updates
[code].....
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Sep 28, 2010
My app starts an On-Screen Keyboard process like this:
Dim PID as System.Diagnostics.Process
:
PID = Process.Start("C:WindowsSystem32osk.exe")
:
[CODE]...
It seems to work 90% of the time. However, sometimes the PID.Kill() fails because it says the process already exited. At this point the OSK is always still there on screen. Yes, I know my code should be testing to see if the process is still running before trying to kill it, but given that the OSK is still on screen..
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Oct 10, 2011
I am looking to write a program that runs in the background that monitors the USB ports on a PC. If a specific device gets unplugged I want a message box to come up saying so. Is this possible. I am guessing I would need to query the usb devices for their ID and then write a simple If then statement, however I do not know how to get the IDs of the usb devices.
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Aug 10, 2011
How can i detect when a new process starts (Any process)?
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Jan 31, 2009
i wanted to know how i can end a process if it runs more then like 10seconds. I am coding a tool that runs a Perl Script but if the Perl Script doesent work then it just hangs at 1 point so it doesent go further what i wanted to do is tell the Program to end the Process after 10 Seconds.
Dim proc As New Process
For Each names As String In lb_1.Items
With proc.StartInfo
[code]....
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Mar 3, 2011
I'm in need of a timer that runs a process every 31.25 milliseconds. Thus, after 768 "ticks" have gone exactly 24 seconds.The control "Timer" that exists in Visual Studio does not accept decimal values.So I had to round the value of the range to 31 or 32. But this raises a problem since the end of the 768 ticks there is a difference of half a second or more. And I need to run the 768 ticks in exactly 24 seconds.I've been researching, and I read some things about the "High-Resolution Timer. " But I did not understand exactly how to use it, and how to set your interval to 31.25 mils, and do that every period of this interval to run the code.
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Feb 22, 2012
I'm creating a sub that will run a batch file, and then delete it when it has finished.[code]...
This causes the program to immediately delete the batch file before it can run. How can I break it up so that it won't delete the batch file until after it has finished?
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Nov 29, 2010
When i push the close button on the top right of the exe i made, the process still runs. How can i make it to where when i close the exe it closes the process too? Also, (this is for shits and giggles) if i wanted to make a button that closed certain processes, what would the code be? For example, the button would close explorer.exe, googledesktop.exe, ect.
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Mar 6, 2012
i 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
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Nov 8, 2010
how can i stop, a process which is being used by another process in vb 2005
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Feb 27, 2011
I have a process that i call, if it doesnt end within a certain time, i want the process to be killed and the loop to only continue after this. if i thread the timer it never tics. If i thread the process it never does as its suppose to.
Code:
Imports System.IO
Imports System.Threading
Public Class Form2
[code]....
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May 18, 2010
I would like to be able to stop a loop while executing using the ESC key.I've found a lot about using the above key from within a Form (for example, to unload it), but very little for the use of the key within a Procedure (Sub, Function) and particularly with respect of preventing a loop from carrying on execution.
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Jan 2, 2010
what is the method to tell when a user starts or stops a process? My company makes a software package that allows a tie in from vb. I want to make a package to allow me to start and stop the software remotely and to monitor when the software is running or not.Ideally there would be some sort of event in windows when the user starts or stops the software. I imagine there is some sort of way to do this with a timer, but I am sure that windows will have some sort of event process when the program starts. I have googled this and looked through the xtremevbtalk forums for this but I am not quite sure as to what keywords to use.
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Apr 9, 2011
I created 3 web browsers (the web browsers is not visible) thet refresh themselves all 2 secondsbut now the cursor change to "AppString" and return to "default"now In every 2 seconds it happening again.
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Oct 11, 2009
I tried to make process that monitores file for changes , makes its md5 hash and outputs.
[code]
Dim f As FileStream = New FileStream(filename, FileMode.Open, FileAccess.ReadWrite, FileShare.ReadWrite, 8192)
Dim md5 As MD5CryptoServiceProvider = New MD5CryptoServiceProvider
md5.ComputeHash(f)
[code]....
It doesn't output at all, it seams to freeze or smt.
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Sep 17, 2011
I'm using sendinput to send keystrokes to external applications launched from my main application. However , the only way I have been able to get it to work is by focusing the external application then sending input. I want to know how to use sendinput to send keys to a background process without giving it focus.
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Mar 17, 2010
Instead of making a WinForm for my application, is there any way to let it operate in the background without a form or anything?
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Feb 15, 2012
When I go to Debug my program (F5), the program will load, until I click on the form with the main part of code in it, and then the program freezes, although it doesn't lock up because as soon as I press stop debugging/ task manager end process, it closes fine.
I will attach the zip of the program here. The form that it freezes on is "Black Ops". Edit Due to the forum not accepting my .Zip file (Invalid file type), I will upload it to MediaFire. Download link (445kb): Click Here
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Oct 13, 2011
I call the method GetUrl below provided in a form-based assembly from a console application to get the content of an HTML page. This works fine so far with one exception. The code starts an iexplore-process in the background and this process remains active even after fnishing my program. The only way I found to get rid of this process was to kill the process, but this seems not be be a very nice and mature solution. I already read that the NET webbrowser control in only a wrapper for an activeX COM control of IE.
Question: How can I close the newly created iexploe-process in a clean way using the webrowser object?
[Code]...
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Apr 24, 2012
I wanted a ProgressBarStyle.Marquee animation while a query is running. I don't want the user to think the application is locked up. it's really not progress just MarqueeAnimation. the issue I have is it's not running as a thread or in the background.
Private Sub ButtonExcute_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles ButtonExcute.Click
ProgressBar1.Style = ProgressBarStyle.Marquee
ProgressBar1.MarqueeAnimationSpeed = 60
ProgressBar1.Refresh()
[code]....
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Nov 10, 2010
I am working on a project and i have come to designing my splash screen... i dont want a useless one what just shows a loading bar what does nothing, im trying to make it useful and show while the main form is loading however this is proving to be a pain in the backside.. i can make the splash screen load when the exe is executed then close when the form is ready but i want to add an animation to the form (just a moving logo) this is just done by me running an timer what changes the location at each tick.. i can get it to work well on its own but when i add frmMain.show() to the code to load the program the animation will not work... i only get this when i ask the program to load the main form..
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Jun 7, 2010
on the loan of my application i created a background_worker to pre-load some of my child forms. here is the problem - it seems that the forms gets loaded into the second process and it wont have any affects on the original process .
In another words when i try to show the preloaded form nothing is displayed. How can i ask the background process to "Merge" with the main process when it is completed! i am not sure if merge is the best word to describe what i am trying to do here!!!
also if i try to re load the form that was created by the main process i will get exception saying you can't change one some that was created by another process
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Nov 4, 2011
I'm developing app in VB.NET 2008.
I have one prob that i'm creating excel sheet runtime, loading data and printing excel sheet through my application. Actually it has 150 sheets to print.
i'm printing by using this code
xla.Sheets.PrintOut(Copies:=1, Collate:=True)
To print 150 sheets , its taking around 17 min. so now the user is waiting until printing process finish(ie 17 min ) .
actually i don't want to make him wait, i want to execute this printing process in backgroud. so the user can work on other process in my app.
how to print this in background ?
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Feb 18, 2009
What I'm trying to do is show a form while a background process is running. Similar to a progress bar but not a progress bar. We have a form that has an animated gif (customer request) and that's it. no other controls. They want this form to show while the processing in the background is running.
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Oct 25, 2010
I am trying to use parallel processes in baclground but it looks like it block the application till all the processes are not completed.[code]...
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Dec 24, 2009
I have a simple application that use thread pool to read a file and input the data into a listbox. I want to be able to stop threadpool from running after clicking a stop button. How do I stop threadpool? Here is the code for my application below:
Imports System.Threading
Public Class Form1
Private Delegate Sub StringDelegate(ByVal text As String)
[Code]....
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Mar 25, 2010
I have got a couple of VB Powerpack Ovalshapes on my Form.I use these for a quick indication if the networked device is online or offline.I can't seem to control the Visible function (or any other function for that matter) one my Background Worker is running.For my Textboxes I used a guide by jmcilhinney which worked great for them but there is no 'Invoke' property for graphics controls.
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