Timers With For Each Loop
Apr 23, 2012
I'm developing an application to learning purposes only. The application will check some proxies that are in a proxy list.
I did a For Each loop ( to run all the proxies in the listbox ). The problem is some proxies are slow to answer and I must do the application wait some seconds before get the next proxy.
I tired a sleep thread but I don't want the application to be unanswering. There's any chance to help me with the timers?
I tried all possible ways and searched a lot but my problem is each time the timer ticks, it make the full for each loop again instead waiting.
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Mar 14, 2011
Makes the following statement about the code below:
**"The computer evaluates the loop condition in the Do...Loop statment to determine whether the loop instructions should be processed. In this case, the inputsales <> String.Empty condition compares the contenst of the input sales variable to the String.Empty value. As you know the String.Empty value represents a zero length, or empty, string if the inputsales variable is empty, the loop condition evaluates to True and the computer process the loop instructions. *If on the other hand the inputsales variable is not empty, the loop condition evaluates to false and the computer skips over the loop instructions.
Based on the code I think it is the opposite: ...that while the inputsales value is not empty it should evaluate to true and process the loop and if it is empty it should evaluate to false and skip the loop?
See below.
Option Explicit On
Option Strict On
Imports System.Globalization
[CODE]...
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Mar 9, 2010
is it a good coding practice to keep timers in a project to a minimum, or does it not really matter?
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Jul 19, 2010
how can I place all timers on a form into a collection
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May 31, 2006
I recently upgraded an application from VB 6.0 to VB.NET. This application contains a timer in its form (only one form is there). But after upgrading, the timer is not getting activated. Form is using DefInstance as follows: frmMain.DefInstance.Show()
[Code]...
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Nov 17, 2011
how do I multithread using timers. For instance 3 picture boxes that change ever 3 seconds?
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Aug 13, 2010
I have a from with various timers. what is the code to turn off all timers in a form at once?
i all ready tried:
For Each crt As Control In Me.Controls<br/>
If TypeOf crt Is Timer Then<br/>
crt.Stop()<br/>
End If<br/>
Next
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Apr 25, 2010
Public Class Form1
Dim SW As New Stopwatch
Dim MS As New MenuStrip
Dim Btn As New ToolStripButton
[code]....
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Oct 22, 2009
Public Class Form1
Public elapsed_time As TimeSpan
Public start_time, stop_time As DateTime
Public txtBreak As String = "180"
[code]....
All the code needs to be controled by seperate timers as the user may need to pause timer3 or timer4 at any one time. The problem I have is that after about 5 minutes the time and elapsed time are about three seconds ahead of the two count down timers.
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Jun 5, 2009
basically what im doing is something similar to this;
Private Sub FirstRoutine()
'This is my first routine, i load a listbox up with a whole
heap of info
[code].....
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Feb 8, 2010
The below is my program so far
Public Class Form1
Private Display As Boolean
Private WithEvents tmr As Windows.Forms.Timer
[code]....
Upon clicking the button a series of letters are displayed to the screen.I would like to be able to capture the time taken to press the letter shown.
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Jun 14, 2011
keeping an Console Application running, so that a timer can perform routine tasks. I am newer to VB.NET and I am not sure what the best method of doing this. Here is a sample of my code that I have currently.
Imports System.Timers
Module MainModule
Public MonitorEnabled As Boolean = True
[code]....
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Jul 9, 2009
I have the system tray icon changing pictures based off a timer..and when I check my page faults they go up on every tick ofthe timer.. so then I pull out the changing of the picture thinkingthat was it.. but still page faults increase..so just wondering if timers have issues ?this was a timer from VB6 ? is there a new timer I should use from.net.. delete the old and use a new control ? I have a couple sobefore I switch them all out.. figure I would find out first..
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May 20, 2011
can i execute 2 or 3 timers at same time if its possible how come?
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Sep 5, 2009
I am using vb 2008 I am trying to learn loops and timers but I have some problems. [Code] The problem with this is it does not wait it just sends 123 all at the same time. I tried using the other way the one that makes the program freeze for the amount of time I want it to wait, but I don't want the program to freeze I want to to move my mouse ext whilst its doing it. as for the loop this is as far as I got I cant really test it yet cos my program is typing 123 a million times a second and my pc doesn't like that so i need to fix the timers. [Code]
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May 8, 2011
I created a timer in the main form - form1 which then updates some text in form2 each 100ms. Now When I click a button in form1, the timer stops. Why? Happens no matter if timers are on or off by default. I have to open/close form2 to make my status updates work again - that's where I run the timer on form load and stop the timer on form close.
Was doing it in windows 2010 express.
So this is what I have in form1:
Public Sub Timer1_Tick(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Timer1.Tick
'some stuff
[Code].....
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Jan 8, 2009
I am new in .net but I am working on a console application and all I want to do is stop the consolo application if it is idle for more that 3 minutes. I did this on a VB6 using the timer but in .net i can't.
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Mar 18, 2011
I have a background application with a couple of System.Timers.Timer running in it. I also have a NotifyIcon that when double clicked brings up a windows form.
My problem is that sometimes my form gets displayed but then for whatever reason it seems like it's losing focus and becomes un-usable (it just sits there in the background).
So here comes the question now... Can the freeze be caused by the form loading (i.e. me double clicking my NotifyIcon) and the timer tick happening the same time?
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Jul 4, 2010
I have a timer in one app which is basically the clock of Windows displayed in a textbox.If I run two apps at the same time I notice that one timer after a while, stops
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Jul 12, 2010
I'm considering making an application that will perform various tests against servers on a local network - for example pinging them, checking hard drive space, checking the state of services, whether or not databases are available, etc etc. Very similar to Hostmonitor if anyone has ever used that - but my app will be free
These tests would have to be performed at specified intervals, but the problem is that there could be literally hundreds of tests and I'm not sure how well my app would cope with hundreds of timers running... especially if they are all configured to run every minute or two (they all need to run independently of each other).
Really I'm just wondering how you guys would design such a system.The best way I can think of is to have a separate timer associated with every test and then when a test's timer has elapsed use the ThreadPool to do the work that the test will perform. That way if loads of them happen to run at the same time then the ThreadPool will queue them rather than trying to run say 200 at once. I also think I would need to have some kind of staging for when the app first starts, so that every single test is not going to have the exact same time to run (well, every test that has the same interval configured), but that shouldn't be too much of an issue.I guess it would be a good idea to try and use some sort of grouping so that more than one test can use the same timer - like if 20 tests were set to run with a 5 minute interval then I could use one timer and run all of the tests when that one timer fires.
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Oct 27, 2011
I want to expand it a little bit and add a second timer that runs parallel to the first timer, but is not affected in any way shape or form by the first timer.
Ive tried nesting the second loop in the first loop but the second loop takes 3 seconds to complete (I use thread.sleep(3000)), so I found that it froze the first loop till the second loop finishes. I was reading about system threading (System.Timers.Timer) and it seems like that is the route I want to go.
I wrote this quick as an example:
[Code]...
I cant use the timer1 to set off the second round of events because of the thread.sleep. I was hoping that the code above puts the second thread to sleep while the windows.form.timer continues on ticking every 1000 ms
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May 7, 2009
Is there any way to check date and hour without using two Timers?
Right now i have this for the date:
Private Sub Timer1_Tick(ByVal sender As Object, ByVal e As System.EventArgs) Handles Timer1.Tick
Timer1.Stop()
[Code]....
PS (again): I thought about setting the Timer1 interval to 60000miliseconds, so that it would check the time everysingle step of the way (or maybe 10 minutes...), but I don't want the app to lag, so... How can i implement a Background Worker?
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Mar 12, 2012
In my class, we are designing a concentration game. The game will give you and output of numbers and you will have a specified time to memorize the numbers. Then, you will enter your guess to see if you were right or not. User will have the option to specify if they want a 3, 6, 12, or 24 digit number. Then they will be able to specify their own timer of 30 seconds, 15 seconds, 3 seconds, or 1 second. The options are done using radiobuttons.Groupbox 1 categorizes the number of digits long. Groupbox 2 is for the timer. So far, I have the whole game layed out except for the timer. Everything works.
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Sep 4, 2011
so i have a problem, when trying to call the Skype API on a timer it gets nothing, im just trying to read messages on a loop and display them in my console, but on timer tick, nothing happens. But if i put the timer tick code in main it works fine. Here is my code:
[Code]...
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Mar 24, 2012
I'm making a blackJack Game for my programing class and at the Form Load it enables one of my Timers for me with out the code to enable it, and the I've checked the designer multiple times and its Enabled is set to False.I"ve tried Changing the name of the Timer and it still runs the code and I've even deleted the Timer and made a new one and it still runs it.
Private Sub GameInterFace_Load(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles MyBase.Load
Login.ShowDialog()
If Login.Pass <> 1 Then[code]....
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Sep 28, 2011
I have a form that holds min two timers, One is a 72 hour timer and one is a 12 hour timer.
What I am trying to do is have both run at the same time, when the 12 hour timer expires it'll bring up a form informing the user that in 60 hours the machine will reboot (or they can just hit reboot). When the 72 hour timer expires it reboots the machine.
BUT I know my managment is going to want to be flexable. e.g instead of 72 hours make is 54, and instead of 12 make it 6.
I wish to avoid using global variables
This is the code for the 12 hour one, How do I call it and set i12sec and i12min?
************************************************
Private Sub t12hTimer_Tick(sender As System.Object, e As System.EventArgs, i12sec As Integer, i12min As Integer) Handles t12hTimer.Tick
t12hTimer.Interval = 1000 '1000 Miliseconds = 1 second
[Code]....
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Mar 4, 2010
Man I've tried to figure it out but i cant get it, anyone know how to?
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Apr 4, 2009
is there anything similiar to control timers in vb 2008? like a lib or something?
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Feb 28, 2010
I am trying to use AddHandler to designate an array of timers to call a function when they have elapsed.
Below is my
Public Shared Sub CreateCooldown(ByVal name As String, ByVal duration As Integer, ByVal timetype As String)
cooldowns(a).Name = name
[Code]....
Unfortunately, when the AddHandler line is called, it instantly fires the cd_Tick function (which I do not want to happen until the timer has elapsed), then never fires it again.
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Mar 12, 2010
Do timers not work in services? I have a service that is running fine, has been for a while. I'm trying to add some work that needs to kick off regularly, so I create a timer that fires every 5-seconds and kick it off when needed. The Tick event never fires. Never, not once. I'm not sure why it doesn't work. Here's the relevant code I'm using. I have 4 backgroundworker threads named, simply enough, bgw1 - bgw4. I wil show you the code for one of the threads so you can see what I'm doing.
[Code]...
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