Timer Pauses (sort Of) The Display Portion (label) Of The Timer Indeed Pauses?
Oct 27, 2009
My timer pauses (sort of the display portion (label) of the timer indeed pauses, however when the timer is resumed it starts again, but not at the point where it was disabled. As an example. If I pause the timer at 10:00 and wait ten seconds when I hit resume it starts at 09:50, where it should resume at 10:00 or 09:59
Module Helper
Public SessionTime As String
Public Pause As Boolean = False[code].....
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Nov 18, 2010
I am building a web crawler in .Net which executes approx 500 httpwebrequests at a time. Everything runs fine but the problem arise at some points; Looks like garbage collection thread takes over the whole application pause for a few seconds. Is there anyway that reduce the delay generated by GC.
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Aug 30, 2011
I have a strange problem on one machine that my VB.Net (.NET 3.5 - VS2008) app is running on, it runs a custom sized Powerpoint presentation in an IE control within my VB app. However, on one of the machines my app is installed on, the presentation always pauses on slide 2.
This is a kiosk type app, where there is no user interactivity. On all the other machines running this software, there is no problem. So it must be something related to the machine itself.
The PC is an XP Pro machine and was originally running IE6, which displayed the problem, I ugraded it to IE8 to see if this would fix it, but the problem persists. The machine is running Powerpoint 2003 (don't recommend upgrading the machines OS/Software- this is out of the question, as it is a business spec machine - even getting IE8 installed was a battle!)
The presentation itself has no complexity, all 15 slides are basic text and photos, no animation, no video etc. As far as I can tell, the problem is nothing to do with my software, or the Powerpoint slideshow, as this operates fine on similar machines and reinstalls made no difference, it must be a problem with the machine/installation itself. I've tried running the slideshow on the problem machine, in PowerPoint itself, rather than in my app, and it runs fine. I've also tried running it in an IE window, without running it through my app, and again, it seems fine.
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Sep 8, 2009
I know that keypresses tend to have this behaviour naturally in Windows, but when you first press down a key there's a short pause. I'm trying to use Keydown to move my Window around but it moves, then pauses, then starts moving again. Is there some way to get rid of the pause without disabling it in Windows?
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Mar 5, 2009
I'm trying to program a countdown timer that shows the time in a label, with a button to start it, and if the button is pressed again add certain amount of time, for example 1 minute.
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Apr 5, 2012
Here is my code:
number = 1
If chkFN.Enabled = True Then
If ProgressBar1.Value < 100 Then
number += 1
lblFN2.Text = number
[Code]...
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Feb 8, 2010
I have a database application with error handling in a separate module.
[Code]...
But while debugging (and "Address" field is left empty), the program breaks and I get an exception at the "Throw New Exception" line even if the error should be trapped by the "Try...Catch" block.
At runtime, everything works well and the correct error is displayed.
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Aug 2, 2010
What I need to do to make this code work for hours as well?[code]...
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Jan 15, 2009
I need an accurate timer to interface a Windows application to a piece of lab equipment.I used System.Timers.Timer() to create a timer that ticks every 10 msec, but this clock runs slow. For example 1000 ticks with an interval of 10 msec should take 10 wall-clock seconds, but it actually takes more like 20 wall-clock sec (on my PC). I am guessing this is because System.Timers.Timer() is an interval timer that is reset every time it elapses. Since it will always take some time between when the timer elapses and when it is reset (to another 10msec) the clock will run slow. This probably fine if the interval is large (seconds or minutes) but unacceptable for very short intervals.Is there a function on Windows that will trigger a procedure every time the system clock crosses a 10 msec (or whatever) boundary?
UPDATE: System.Timers.Timer() is extremely inaccurate for small intervals.I wrote a simple program that counted 10 seconds several ways:
Interval=1, Count=10000, Run time = 160 sec, msec per interval=16
Interval=10, Count=1000, Run time = 16 sec, msec per interval=15
Interval=100, Count=100, Run time = 11 sec, msec per interval=110
Interval=1000, Count=10, Run time = 10 sec, msec per interval=1000
It seems like System.Timers.Timer() cannot tick faster that about 15 msec, regardless of the interval setting.Note that none of these tests seemed to use any measurable CPU time, so the limit is not the CPU, just a .net limitation (bug?)For now I think I can live with an inaccurate timer that triggers a routine every 15 msec or so and the routine gets an accurate system time. Kinda strange, but...I also found a shareware product ZylTimer.NET that claims to be a much more accurate .net timer (resolution of 1-2 msec). This may be what I need. If there is one product there are likely others.
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Jul 9, 2009
I have a timer on a page in ASP.NET.
After a certain period of time elapses, I want to disable the timer.
I want to put a static variable in the timers tick event that will track how many seconds have elapsed.
My question is, will this work?
If user X and Y are viewing the page will they both have separate local static variables?
What is the best method of shutting down an ASP.NET timer after a certain elapsed time?
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Apr 23, 2009
I have a windows application that need to process som quite time consuming jobs. In my first try i did all processing under
the form thread. The result was bad response and update of the form due to the heavy jobs.To get around the problem with bad response from the form i created a new class "processing" where i put all the data processing. Then i instanciated a background worker where i in the "doWork" sub created a new instance of "processing".The "processing" class creates a timer from system.timer, and the timer drives the processing.On the Timer event Elapsed the timer starts a new thread from the thread pool.
My problem is now when i want to asynchronously close the background worker (with the corresponding function call what ever it is called ...) there is still a timer thread out there that causes exceptions for me.
1. How can i close my background worker and at the same time have the timer to be stopped?
2. Is there a way to synchronize the timer event so that the timer executes from the background worker thread?
3. Is there a better approach for me to adapt?
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Jan 11, 2011
I want to create an array of timer in vb.net. My problem is that how will i raise the tick event for a particular timer, say mytimer(x).tick and inside the tick event there is also a button, say mybutton(x) which changes location every interval. for example:
public class blah
dim mybuttons(20) as button
dim mytimer(20) as timer
private sub form_load(....) handles me.load
for x as integer = 0 to 20
[Code]...
i dont know what to do next, all i want is to pass the button mybuttons(x) to mytimer(x) tick event, in which their index number are the same. i want to create one timer per button. how to do that? please help me and post example codes. i've researched the net but i cant understand passing variables, addhandlers, etc. i'm just new to programming object oriented.
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Jul 4, 2011
How can I incorporate the timer so once a page loads the timer activates, waits a few seconds then I tell my program what to do next.I tried this code but it didnt work:
Timer1.Interval = 5000
Timer1.Enabled = True
Timer1.Start()
[code]....
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Sep 30, 2010
Everything is nice and dandy on my pc, then I compile, move it to its final destination and I doesn't work! At first I thought it was a OS problem, but both machines has win7, I then thought it was a compilation problem, installed visual studio on the other pc, recompiled still with no luck, then it dawned on me, may it be a problem of 32bit vs 64bit?The piece of code is this:[code]....
By the way is not a problem of mouse_event, is the timer that doesn't work
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Mar 24, 2009
I have a timer in vb.net and it's interval is 1000ms ,. i have placed in it's timer_tick event a code that will print screen the screen and save it to a database.The problem is when i click outside of the form, or loosing the focus of the mouse to the form containing that timer/printscreen, the timer stops. As a result the printscreen also stops.here are it's properties:
generate member = true
interval = 1000
modifiers = friend
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Jun 22, 2010
I would like to make a timer using a label or something equivalent.What I want to do is to have the label to count the time from a specific function.Lets say i have a button on my form named "btnRun".I would like to have it so when I click button run it will make "Label1" count up until the a certain function stops.I would like it to display Hours, Minutes and seconds.
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Jan 29, 2011
Private Sub Timer1_Tick(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Timer1.Tick
Dim total As Single
[code].....
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Oct 4, 2009
I need to Change text of label One by one with One timer
For Example!
"S"
'step1 "Sh"
'step2 "Sha"
'step3 "Shar"
'step4"Shari"
'step5"Shariq"
'step6"ShariqD"
'step7"ShariqDO"
'step8"ShariqDON"
'step9
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Oct 4, 2011
I want to move a label across the form every X milliseconds. How do I do that? I understand how to use a timer, but don't know how to move the control. Here is my
Private Sub Timer1_Tick(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Timer1.Tick
Label1.Location.X = Label1.Location.X + 10
End Sub
"Expression is a value and therefore cannot be the target of an assignment."
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Feb 13, 2009
How do Put a timer on a label To Popup like every 20 seconds?
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Mar 11, 2009
I want to say the timer count the time the Process is working so that it Counts always higher on a Label with the Text 00:00:00. So it always go higher by 5ms:
00:00:10
00:00:15
00:00:20
00:00:25
and so on.
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Oct 6, 2009
i just want to blink the label without using timer. i think its possible if i use looping structure
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Jul 14, 2011
I recently switched my code from using the windows.forms.timer to the systems.timer.timer and it has resulted in a multithreading error. I'm using the timer to trigger just one event so multithreading shouldn't be an issue. To give more detail I have implemented the timer at follows:
At the top of the class I have: Private Shared timr1sec As System.Timers.Timer
When the program loads (Private Sub Test_load):
timr1sec = New System.Timers.Timer(1000)
AddHandler timr1sec.Elapsed, AddressOf OnTimedEvent
In OnTimedEvent I call several subroutines, and write some data to the screen using a ListView object.VisualExpress throws the multithreading error on the last line of this code, which is in OnTimedEvent
[Code]...
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Aug 13, 2010
I have a routine which is controlled by a timer. It works perfectly. The problem is that now, I need to run this routine several times, so I need to start differents threads so that my program doesn't get hung up. I've been trying to start my timer inside a thread, but it doesn't work!
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Nov 6, 2009
VB6 create object of timer instead of timer control
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Apr 6, 2009
Is it possible to use a timer to delay code? For example:
[code]...
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Apr 8, 2011
I have a problem in timers, I want to display 2 forms each one after 3 and 5, how to do that? I mean when the first form appears, after 3 seconds another one will appear, then after 5 seconds the second will appear. I have a code where someone gave me here but its for message box only, thus I modify it to put a form still does not work. Here the code I put in the timer below:
Private Sub frmblabla_Load(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles MyBase.Load
tmrnote.Start()
Private Sub tmrnote_Tick(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles tmrnote.Tick[code]....
I still have problem when the message box stops, it displays all the forms together. All I want is when the message box stops, then it display the first form then stop to display the second then stop to display the last. The first form must stay for 3 seconds on the screen, then after 3 seconds the second appears then after 5 seconds the last appears.
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Jan 24, 2011
I am having a mental block on how to work out a 15 minute timer that is shown on a label and counts down so that the user can watch it. I can do it just fine in seconds but I need to put it into the format of 15:00 and then have it count down the seconds and the the minutes when ever it drops 60 seconds. I found a few articles on using the dateNow syntax but that seems like it would only be good for adding time not subtracting it. Also I know I can set up a button to start and stop the timer but is it possible to use the space bar as the start/stop button?
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Oct 13, 2009
if a label says 500 how can i make it go up by 2 each time a timer ticks?
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Nov 26, 2010
i have a MDI application with parent and childforms.
i have a global timer in a module that makes a com search and writes the result to a parentform status strip label.
the problem is that the label do not change.
i have tried the following:
1) on timer.elapsed
parentForm.statusstriplabel.text =...
2) to create a delegate and invoke a parent form function
3) to create and raise an event
although all 3 seened to run the label didn't changed.
the timer was created in a different module than the parentform class for many reasons.
one of them is because i want to access the timer.start , timer.stop from all the childforms
when i tried a local timer to paretform worked perfect but i couidnt start and stop it from the childs
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