Using a Timer in C#
I'm trying to make a form invisible for x amount of time in c#. Any ideas? Thanks, Jon ...
timer
C# Why are timer frequencies extremely off?
Both System.Timers.Timer and System.Threading.Timer fire at intervals that are considerable different from the requested ones. For example: new System.Timers.Timer(1000d / 20); yields a timer that fires 16 times per second, not 20. To be sure that there are no side-effects from too long event handlers, I wrote this little test progra...
ExecutorService vs Swing Timer
I've been reading Filthy Rich Clients lately and noticed that, although the version of Java is 6, there is no mention of the Concurrent Framework. So, they talk about java.util.Timer and javax.swing.Timer but not about the ExecutorService. I read about the advantages of ExecutorService in the question "Java Timer vs ExecutorService" and...
Running a Java Thread in intervals
I have a thread that needs to be executed every 10 seconds. This thread contains several calls (12 - 15) to a database on another server. Additionally, it also accesses around 3 files. Consequently, there will be quite a lot of IO and network overhead. What is the best strategy to perform the above? One way would be to use the sleep ...
Timer doesnt "loop"
Alright so here is the deal. I am trying to make a application thats a GUI application yet has no GUI. So when the application starts, it has a small form with a login screen ( i am done this part). This the code for the main() in which the form runs but as soon as it is closed, i dispose of it. static void Main() { Appl...
running async operations in c#. - basic.
Consider the following snippet: if(form1.isLoggedIn) { //Create a wait handle for the UI thread. //the "false" specifies that it is non-signalled //therefore a blocking on the waitone method. AutoResetEvent hold = new AutoResetEvent(false); filename = Path.Combine(Environment.GetFold...
How to run JavaScript prior to System.Web.UI.Timer OnTick?
I need a client-side script to confirm that the Timer's OnTick event can proceed. How do I invoke CanContinue() before the Timer1 postback occurs? How do I cancel the postback if user selects Cancel? <%@ Page Language="C#" %> <script runat="server"> protected void Timer1_OnTick(object sender, EventArgs e) { Response...
How to provoke a timer trigger in glassfish?
We need some consistency in our functional test cases. The best we can do currently is to wait for an estimated time before the JEE timers in the product should have been triggered. It would be much more predictable if the test cases could trigger the timers programmatically, probably with JMX. How can this be done? Is there a JMX inter...
Timed popup in Android
I am creating a matching game for Android, and when the user gets a match, a dialog box should pop up saying "Match!" I cannot figure out how to do this though. If I use Thread.currentthread().sleep, the dialog never appears. android.app.AlertDialog a = new android.app.AlertDialog.Builder(match.this).setTitle("Match!").show(); Thread.c...
Design for multiple interacting timers
I'm designing a system that needs timers at all levels of a component hierarchy. Multiple timers may be active at once, but they need to interact with each other (stopping a component's timer stops its descendants' timers, while starting a component's timer starts its ancestors' timers and stops its siblings' timers). The timers each...
Best timing method in C?
What is the best way to time a code section with high resolution and portability? /* Time from here */ ProcessIntenseFunction(); /* to here. */ printf("Time taken %d seconds %d milliseconds", sec, msec); Is there a standard library that would have a cross-platform solution? ...
What is the best way to repeatedly execute a function every x seconds in Python?
I want to repeatedly execute a function in Python every 60 seconds forever (just like an NSTimer in Objective C). This code will run as a daemon and is effectively like calling the python script every minute using a cron, but without requiring that to be set up by the user. In this question about a cron implemented in Python, the soluti...
Is it necessary to dispose System.Timers.Timer if you use one in your application?
I am using System.Timers.Timer class in one of the classes in my application. I know that Timer class has Dispose method inherited from the parent Component class that implements IDisposable interface. Instances of the class below are created many times during my application lifecycle; each of them has an instance of Timer class that gen...
System.Windows.Forms.Timer performance
We have an application containing a lot of user controls that update frequently based on a System.Windows.Forms.Timer. Am I safe to add a Timer instance to each control peformancewise? Or should I have one Singleton Timer that runs all the time that is to be used by all instances? What is acutally happening under the hood? Will there be ...
CreateTimerQueueTimer callback and race condition
I'm using timer queues in my application, and pass a pointer to one of my own C++ Timer objects as the 'parameter' to the callback (in CreateTimerQueueTimer). I then call a virtual method on the object in the callback. The destructor of the Timer object will make sure to cancel the timer using DeleteTimerQueueTimer(). static void callb...
In C#, where should I keep my timer's reference?
The documentation of System.Threading.Timer says that I should keep a live reference for it to avoid it being garbage collected. But where should I do that? My main is very simple that I don't know where to keep the reference: class Program { static void Main() { new System.Threading.Thread(myThreadStart).Start(); ne...
WPF .NET Best way to trigger an event every minute
I have an app that needs to check a database table every minute. The table is indexed by the time of day and so the app needs to run this check every minute. What's the best of way of doing this? I can create a background worker thread but if I set it to sleep for 60 secs after each check I will eventually miss a minute because of the...
Memory leak while using Threads
Hello. I appear to have a memory leak in this piece of code. It is a console app, which creates a couple of classes (WorkerThread), each of which writes to the console at specified intervals. The Threading.Timer is used to do this, hence writing to the console is performed in a separate thread (the TimerCallback is called in a seperate t...
timer class in linux
I need a timer to execute callbacks with relatively low resolution. What's the best way to implement such C++ timer class in Linux? Are there any libraries I could use? ...
Timers using windows service/webapplication
1) In my application am scheduling meetings. 2) am collecting payment installments for purchase of an item (it has payment due dates). 3) Now I want to send notifications to the users i) for schedule events I need to send notification 5 min before the meeting time ii) for payment dues I need to send notifications from one week before to ...