I have a Windows Service -which contains a System.Timer -which get enabled and started in the OnStart event handler.In the Timer Elapsed event -I make a call to a routine within another DLL. The problem is that the Timer Elapsed event never fires... I have a test application -which works fine. This is written in VB.Net 2008 framework 3.5
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I am a newbie, but I am unable to get this code working. FileSweeper is supposed to start a timmer that triggers fileCopy on a web server. fileSweeoer is triggered by global.asax.ileCopy then will copy the filWould it make any difference if this was a class running on a web server?
Imports Microsoft.VisualBasic
Imports System
Imports System.Threading
[code].....
Is it possible to set a timer for window service in app.config rather than giving a code behind code?
View 1 RepliesI have used timers in .Net for a long time now an never had this problem.Start timer to fire every 10 seconds that reads an object and updates the UI using a delegate.This works great until the form is minimized several times, then the timer thread seems to vanish.Anyone come across this before?
Obviously I can roll my own using a thread directly and sleeping it, however this seems like reinventing the wheel when a threading timer class exists already.
Code: Private Sub m_Tmr_Tick(ByVal state As Object)
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I'm wondering what exactly is the difference System.Timers.Timer and System.Windows.Forms.Timer???
View 4 RepliesI am looking to create a 500ms timer that I can use to make some text flash.Setting up the timer is straight forward enough, but I have not found an example of letting the timer create an exception so I do not have to poll it for a timeout.
View 1 RepliesI used a timer in my user control now when Timer_Tick event is fired I want to raise an event like Ticked. I created:
public delegate sub myDel()
public event myevnt as myDel
in Timer.Tick
I used raiseEvent myevnt. I also raised the event from a button click. This event is handled in a windows form where the control is used, My problem is event is firing when the button is clicked but not firing from the timer.tick. Is there any problem from Timer.Tick.
I have created a windows service and I have two different timer variables in there. 1st one fires off every 5 seconds and then does whats it is required to do. The second one fires every 30 seconds.
I make sure that when the function are getting executed I disable both the timers and enable once the function is complete.My problem is my second longer (30 second ) timer never fires only the first one is firing. I had created this service 3 months ago and it was working fine till now. But now I do not see the timers work properly in a simple windows app i created to test their workings.
[Code]...
When I run the following code in the UI thread, it works without issue.
VB.NET private timer as new timer public sub test()timer.enabled = true timer.interval = 1000 timer.start()addhandler timer.tick, addressof timer_tickend sub private sub timer_tick(...) messagebox.show("fff")end sub
But if I run it within a background thread, nothing happens.
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.
I am making a server program, it works, cool.Made it display the info coming in via a textbox, the number of users connected, etc.I based it off of one of the members heres examples (jmcilhinney).However, I am kind of in a rock and a hard place.Do I try and convert it to a windows service so its on all the time? Or do I leave it in a exe format?I have never touched windows services before, but they look promising.However, this will be residing on a collocated server running Windows Server 2003.The problem with that is, if I run it. Person B, C, D, E, whoever.. can not see it due to the virtualized desk tops of RDC (even under the same username).I am kinda curious if I should make it a windows service, then make my 'display' program that just.. remotely taps into it to control it, and view stats and such.The 'server' will take info sent from the client, and add it into a database, then pass back some commands and such.
View 1 RepliesI got this warning that I don't know what it means.Warning1 The service System.ComponentModel.Design.IInheritanceService already exists in the service container.Parameter name: serviceType00
View 2 RepliesHere is the stack trace:
2012-03-16 19:15:09Z E System.NullReferenceException: Object reference not set to an instance of an object.
at System.Timers.Timer.set_Enabled(Boolean value)
at System.Timers.Timer.Stop()
Here's the code:
Timer declared as private member variable.
Private _myTimer As System.Timers.Timer
Initialize timer method.
[code]....
The timer has to have a value or else the Timer.Stop() call would be throwing the exception. This is a sporadic error and I'm just trying to see if anyone has experienced this before or if anyone has any ideas of what could be causing it. It is occuring in a WinForms application in the event handler for the Elapsed event of the Timer, but it is only occuring sporadically on the users computer. I haven't been able to reproduce the error myself.
In a windows forms application I am attempting to read a file from a share into a filestream.I then start impersonating and write the stream to another share that only my impersonation account has access to.This works fine for small files. But if I attempt this on a 90 meg file I recieve a "Insufficient system resources exist to complete the requested service" error on the following line:
System.IO.File.WriteAllBytes(myLocation,MyByteArray)
Full Example:
Dim ImageData As Byte() = Nothing
Dim fsAttachment As IO.FileStream = Nothing[code].....
The Timer canot work at Windows services, Anyone face b4 ?? Any extra setting need to set b4 use it ??
in VS2003 windows services can work.
Right now I have a windows service which only task is to gather data from a database with a specific DSN and then send out an email if the data is valid. The service contains a timer which ticks every 5 minuts and performs the tasks above.Now I need to re-write the windows service to be able to run on more than 1 DSN.I was thinking of making several threads inside the windows service and then again have a seperat timer inside each thread.Is this a good idea and how can this be done? I want to avoid having a windows service for each DSN.[code]
View 4 RepliesI have this code for a Windows service I am writing in .NET....However the TICK function never gets executed regardless of what interval I put in the tmrRun properties. What am I missing? I am sure its something stupid I am not seeing.
View 6 RepliesI have a windows service application that runs a timer. When this timer ticks it starts another application that runs a process.The application is started but it does nothing. On the other hand if i run the application manually it works fine.
View 5 RepliesWhat i want to happen is for the dictionary keys and items to be overwritten each time it is executed, as the data needs to be up to date.
View 3 RepliesI'm having complications with imlementing a service that uses a timer to send emails. In my code, it stops in GetDocuments() after TisValid() validates the directory path. I tried using a addhandler and threading but neither worked.
View 3 RepliesPrivate Sub wb_Scrape(ByVal sender As System.Object, ByVal e As
[Code]...
Using Visual Studio 2010 / VB.net Windows forms application I have a weird situation occuring. I have a rather simple windows form program I have written where a second form is opened by pressing a button on the "main" form. It is opened simply by the following on the click event:
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how to use the timer to control the blinking? Cuz i tried to stop one timer, it did stop this timer but if i didnt stop the timer 1, both timer 1 and timer 2 will begin although the data is in different entity. By right if the alarm comes in from block 2, only block 2 button will blink, like wise if the alarm comes in from block 1, only block 1 button will blink
the below is my code:
Imports System.Data.SqlClient
Imports System.data
Imports System.Drawing.Image
[Code]....
In my project I've got a MainWindow that opens up a second Window. Inside the second Window there is a Frame and I start a navigationservice inside the Frame. Also in the second Window I've got a KeyDown method that calls Me.Close when the user presses the Escape key. Anyway, when the second Window closes a System.Windows.Threading.DispatcherTimer() inside one of the pages in the navigation service doesn't end. Any ideas on how can I close the second Window and terminate the DispatcherTimer inside the navigationservice?
View 2 RepliesI want to ask regarding the window service. I have a window service doing some tasks in background with specific time, eg. 5 minutes Once it was doing its tasks, the cursor was keeping flash or something likes busy,
View 4 RepliesI have a project that creates and installs a window service. I want to uninstall it because it is running both on my PC and on another. I want to leave it on the other. So when I open VS with the project, I right-click on the servicesetup and choose uninstall and it says "This action is only valid for products that are currently installed." It is listed in control panel Services, so isn't it installed?
View 5 RepliesIf I have a custom windows service running on a server, is there anyway I can access the value of a property/variable within that service? For example, I would like to have a client vb program be able to "read" the value some variable from that service. A simple example would be the service would capture a boolean value of the success or failure of the last time it kicked off a process. I would then like to have a client windows app "connect" with the service and be able to read that boolean value.
View 3 Repliesi had a program , run a word document and print , it work fine.but when i run this program as window service , it didn't print.i check server log , i found a problem.when this program run as exe, programrint all run as Administrator.when it as window service(Administrator) , programword run as Administrator , but print run as SYSTEM.
View 2 RepliesI want to know In which case OnStop() of .NET Window Service will not fire? will it fire when computer sudden restart,power failure , Shutdown or any other conditions?
View 1 RepliesI used the same lines of codes to call a SQL server store procedure to export sql data to an XML file:
1. If I call the stored procedure from a window form application, it works and generates the file at the designated location.
2. If I call the stored procedure from a window service application with a setup project, and the install process run well, and I started the service, and checked the event log, it showed the service start successfully, BUT it FAILED to generate the file at the destination folder. I also run everything as administrator, but it still failed to generate the file. It made me wonder if a window service can call a stored procedure. Because, again, mine ran fine with the window form appl, but window service, I would like to have your sample codes. I have googled around for 3 days now, but could not find the answer. I use vs 2008, sql server 2008, and Windows 7
