Pause Without Freezing The Application
Dec 23, 2011
I have a loop and within that loop I'm running a Dispatcher Timer.[code]Basically what I want is to show each item in the items list pausing after each on for 5 seconds. I want to show elapsed time in a label and after the elapsed time hits 5 seconds show the next item. This is not possible using the Thred.Sleep method, because it just freezes my application for 5 seconds, and shows the next item without ever updating the label with elapsed time.So what to use instead of Thread.Sleep to not freeze the application and update the label with elapsed time?
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Nov 4, 2008
I have a Data Acquisition and Control application that controls at 10 Hz and logs at 1 Hz. Both of those timers call a separate. I recently added a feature to the program to request 6 characters from a server for the barometric pressure. (29.206, etc) It works for the most part, but two weeks ago a computer froze, last week another one froze, and two froze this morning. I have not had freezing problems in the nearly three years this program has been running 24/7. Turns out they disconnected the server this morning, so that explains the simultaneous freezes in two test cells. I used a try catch statement, but apparently that wasn't good enough. how I can make this code more robust?
[Code]...
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Oct 14, 2008
I have rently deployed a VB windows application. It uses ADO typed datasets and datagrids.
On a couple of machine, if the application is left opened for a while (about more than 30 minutes), it gives no response. In order to restart it, I need to end the process vie the Task manager.
How would I even begin to troubleshoot why it is "hanging up"?
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Oct 11, 2011
My application first checks if an SQL Server is installed before it runs. If there is no server it installs one. Now I want the application to pause or exit during the installation, since its thread may compromise the installation process, or is it not?. How do I do this? The Sleep() mmethod may not help because I can't know how long the installation process would take.
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Mar 4, 2012
I want to insert a pause between the display of one control (a button) and the display of another control (a label) on a windows form. Specifically, I want the form to load with the button (and other controls) displayed, then, after a pause of two seconds, the label to display. I have tried timers, and .Sleep() but the effect is not what I want. That is, there is a pause before all of the controls are displayed, and all (including the label) are displayed at one time. I want most of the controls (all except the label) to display normally, then, after a two second pause, I want the label to display (on the same form).
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Mar 8, 2010
1) Why the pause button and also the pause command does not exist in VB 2010 Express?
2) I have some solutions under 2010. In 2 or 3, while debugging, I can change instructions without restarting the application. In others, I cannot change anything (Is like readonly), Looking in 'My Applications', Tab 'Debug', Option 'Configuration' I can choose several Options. In the applications I can debug, the default is 'Active (Debug)'; in the others is 'Active (Release)'. If I change the options, the word 'Active' remains attached to the original option.
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Sep 22, 2009
I am trying a simple hello world application with a console. Using Console.wrtiteline("Hello World"). After the program writes hello world how do I get it to pause on the line? IE print "press any key to continue...."
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Sep 9, 2010
how do I get my app to wait untill an action is completed, I just want it to wait (sleep) untill an action is done, how ?
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Sep 16, 2009
When a button is clicked,my program gets the list of all Drives on a current computer.Then I use String.Concat to merge the drive letter and the rest of the path.So I get something like: "C:" + "somefoldersomefile.some_extension"That creates a full path to a file I am looking for.Then I check if that file exists.If it doesn't exist,I use Process.Start to run the setup file(to install the program I need).It works well and installs the program I need.I want my application,after the installation is finished,to check again if the program is installed and ofcourse confirm that it is.
Private Sub Button1_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button1.Click
Dim DriveList As String() = Directory.GetLogicalDrives()
Dim Drive, FullPath, Path1 As String
Dim EmptyDrives As Integer
[code]....
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Oct 14, 2010
I am moving a lot of data to MS Excel from my application. I use a conditional statement to choose which Excel page the data is transferred into. Then a For Next statement to divide the data into various areas on the Excel sheet.The first sheet will always work correctly, but on the next conditional statement to chose the next Excel sheet no data transfers when running the program. If I step the program by hand all data all code works fine. I believe I need to pause between the conditional statements but I have been unable to get one to work.In the following code I have been trying to get a pause between to conditional statement to no avail.
[Code]...
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Sep 17, 2009
I am putting two questions in one thread. I am using VS2008 Pro.
1- Why my application stops running when I 'Click and hold the left mouse button' and resume after releasing the mouse button on Titlebar? i.e. why this happens when I grab the title bar? How can I avoid this so that my application run regardless if the form is moving or title bar is grabbed with mouse while debugging?
2- I want to make one button to pause the whole application then restart the application from the point where it stopped.
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Jul 21, 2011
I have an app that I'm debugging and I need to pause it by clicking on a "pause" button in the development environment. I don't want to stop it programmatically, just manually to check what it is doing. I know this should be simple but I can't find a pause button anywhere on the toolbar.
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Jan 27, 2011
I am trying to make a start and pause button (and hence continue) to start, pause, and continue my program. The start button works but the pause button does not. Can someone look at my code and see what the pause button needs to do to pause the program? I am using VB 2005. Here is my code.
[Code]...
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Feb 25, 2009
I'm trying to use a loading overlay on top of a Windows form that adds a 50% opaque layer on top of a windows form with a loading GIF, while it does what it needs to do in a background thread. The overlay is a windows form that I'm drawing in the onPaint event.
The loading overlay works fine on multiple different form loads, but fails to work properly when summoned to ensure patience during a 30 second upload process (That Prints a Word Document to PDF, then uploads that PDF to a SQL Server). This upload collects some data from the form, puts it into an Object, then operates entirely on a background thread. The loading overlay will appear, show the first frame loading GIF, then just freeze. The onPaint is getting fired and the image frame is being updated, but it isn't visible
Constructor sets the form to be UserPainted:
Sub New()
InitializeComponent()
SetStyle(ControlStyles.UserPaint Or ControlStyles.Opaque, True)
End Sub
[Code].....
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May 25, 2010
I have a FileSystemWatcher monitoring a folder, and when many files are cut and pasted into the folder, the GUI freezes, as the 'Changed' event is fired over and over. Any way to deal with this?
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May 20, 2011
My program keeps freezing. Here is my [code]...
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Jun 10, 2010
The application is freezing on SetWindowsPos,
Sub AOnTop(frmID As Form, OnTop As Long)[code]...
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Oct 8, 2010
how do I delay my program without freezing? I am sure there is another way to do this without timer.PHP uses sleep(). What do VB use?I tried some Delay or Sleep function but don't seem to work..
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Jul 30, 2011
I'm a VB.Net newbie, and would like to write a small app that runs a While loop to check a DNS domain name, and exits once the domain has been registered.
I found code at How to Get Host Name and IP Address in VB.Net - .Net Articles & Samples to resolve the hostname and handle the "No such host is known" error if it still hasn't been registered, but I have a couple of issues:
1. How to make sure the GUI is correctly displayed even though there's an endless While loop? Should I use some kind of asynchronous call so that the window doesn't freeze?
2. I'd like the app to mimize to the icon bar, and have its window title display some status information ("Still waiting/Registered!") so that I can simply move the mouse over it and know whether the domain has finally been registered or not.
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Mar 6, 2012
I have an application that does not load a main form. My start up object is Sub Main. I am not using the application framework. I have several classes that handle different parts of the program.
objAlerts is the main one being used for this issue I am having.
This is how they are referenced in the main program class.
CODE:
This is the unfinished objAlert
CODE:
My issue is that the windows (alert.Show) open in a frozen state where the mouse pointer displays the hoursglass and the window does not respond. The windows show in the list of objects no problem.
Is there a special way that I should be opening these? I can open windows on the main class no problem.
I read that <form>.invoke(alert) might work, but there is no invoke on the main class according to VB.
I am thinking this might be a threading issue, but I don't know how to fix it because this is the first program that I have made using a Sub Main instead of a form.
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Jul 30, 2009
I have MDI parent and child windows that were working fine but now clicking on a dropdown doesn't do anything, also scrollbars cannot be moved. Other controls are still ok, buttons and other links are still working. I should also note that if I change the child to load in a separate window all the controls work again.
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Apr 4, 2009
Lets discuss about those created active x which got created in VB6 and not working in Vista.Here i will let you know my problem,no idea wheather we need to upgrade any runtime file in VB6 or in vista?
I have done an ActiveX to get client MAC address as its major part and runs over IE.it is successfully running in Win2000, Win2003, WinXp and even with IE7 with previously mentioned Window versions.
This ActiveX was developed in VB 6.0.
This ActiveX gets installed atomatically through a cab file, whenever the application was accessed first time.
this cab file work fine in WinXP but when we try to run this cab file in vista IE get hang
Now, we have to support it with IE7 over Vista.
let me know what should I do to make it compatible with IE7 and Vista. I am using Vista Business right now.
When the application was accessed through IE7 for the first time, ActiveX installation dialog appeared. I pressed the Install button but then IE7 threw an error message that "Internet Explorer has stopped working". After that each time, whenever the application was accessed IE7 threw the same error message.
Cab file i made in VB6 using internet and deploy package wizard,along with cab file we will get one HTM file also to get Object id and code base along with version,even if we try to open this HTM file then also IE get hang.
I tested by manually registering the ocx, also turned off the Protected Mode and enabled my ActiveX through Manage Ad-on as well, but to no avail.
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Aug 12, 2009
I made a game in VB .Net that uses tcp and sends messages back and forth.What is happening is, every so often, the message cannot be sent quickly enough, so then the TCPObj.connect() method goes into a loop, until it reaches the timeout and then spits out an error. Most of the time though, it never gets to the error, my application just freezes, and then comes back after TCPObj.connect() succeeds. How can I make the connect() method do application.doevents while it's trying to connect? Basically, I dont want it to freeze up my whole application. Since tcp.connect() is a .NET method, I can't go in and add application.doevents.
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Jun 12, 2009
put delay in vb.net without freezing form
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Aug 21, 2010
Is there a way to stop or minimize forms and dialogue boxes from freezing? they seem to take up a lot of memory when loading to the point that they some times look transparent for a few seconds.
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Mar 8, 2012
I was messing around with the listview Control first,, And when i got it working i thought what's this backgroundworker thing,,so i read up on what info MS had on the MSDN page..and slapped it in here..and i thought i had it working ok until i tried to move my project application to the side to reply to a instant message i got..and then i noticed that it froze up .and looked like it was using alot of system resources,But wait let me back up just a bit.originally i was trying it with a fairly small number of items, and then i seen on here where someone had posted a rather large index for testing his app with,,and while trying to load that list that's when the issue was noticed i don't really plan on loading a list as big as that test index was but, I would still like to know why the program did what it did using the code below.I'm not really asking for it to be too altered, i kinda like all the controls i have in it the moment,, and the way it loaded as well.
[code]...
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Dec 10, 2010
I wrote a program that visits each link in a listbox and then parses some data from the HTML. [Code] It works fine for 100 or so items, but when I load a big list (2000 items), the GUI seems to freeze. How should I fix this?
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Apr 9, 2011
this is urgent. i have a form in which i need to give timedelay of 3 seconds before each line executes. But when i try system.threading.thread.sleep its freezing the UI and furthermore all delays are executing as one single delay. that is
[Code]...
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Aug 27, 2010
Is there a way to include an ActiveX to VB .NET project without adding it to a form?
If I add it to the form and call a function on it that blocks, the UI is unresponsive until the function returns. Even if I am making the call in a different thread.
I was able to compile the code when I did not include it via the form, but got this error once I called a function on it.
Catastrophic failure (Exception from HRESULT: 0x8000FFFF (E_UNEXPECTED))
How could I make the UI responsive when the ActiveX functions are blocking?
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Oct 3, 2011
I am a bit of a noobie with vb.net and I made this application that does a lot of http requests and stream reading. But when it does this it always freezes my application.So I did a little research and found that I could use background workers to solve this. But I have no idea where to start. So if you could look at my code and tell me where and how I can add background workers to prevent the freezing that would be awesome.[code]
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