I have a brief question.
In my program I want to use a ToolStripStateLabel to display some info to the user. Comming from c++ and QT I don't quite understand the .net variant of this controll. Because I want to show the user a message for a certain ammount of time I.E 3000ms. or 3 seconds but I can't seem to figure out how to do this. So, is it even possible and, how do I do this?
Unfortunately you have to implement Timer to do that.
private void InitTimer()
{
var myTimer = new Timer();
myTimer.Tick += new EventHandler(TimerEventProcessor);
// Sets the timer interval to 3 seconds.
myTimer.Interval = 3000;
myTimer.Start();
}
private static void TimerEventProcessor(object sender, EventArgs e)
{
ToolStripStatusLabel.Visible = false;
(sender as Timer).Stop();
}
Related
I'm pretty new in c# and I'm programing just for my personal studies, I have been trying to program an instruction where a read some data from a remote station to my application (m64...mw74), it's running OK for couple minutes but its crash maybe after 5 minutes.
please see the code I'm using below to update my data every 1 second and write it in a simple text box in my form.enter image description here
Thank you very much in advance.
private void Load_act()
{
actvalueL1.Text = plc.Read("mw64").ToString();
actvaluep1.Text = plc.Read("mw68").ToString();
actvaluep2.Text = plc.Read("mw71").ToString();
actvaluep3.Text = plc.Read("mw74").ToString();
InitTimer();
}
private Timer timer1;
public void InitTimer()
{
timer1 = new Timer();
timer1.Tick += new EventHandler(timer1_Tick);
timer1.Interval = 1000; // in miliseconds
timer1.Start();
//Console.ReadLine();
}
private void timer1_Tick(object sender, EventArgs e)
{
Load_act();
}
You're chaining the timers, eventually going to run yourself out of memory as they cannot dispose - the timer creates the next with its own call. Return them on to a parent method that loops your timer 'initTimer'
I have time declared like this :
private readonly Timer _timer = new Timer();
public MyForm()
{
InitializeComponent();
_timer.Interval = 100;
_timer.Tick += TimerTick;
_timer.Enabled = true;
}
void TimerTick(object sender, EventArgs e)
{
//update some textBoxes some labels etc.
}
At some point it just stops ticking why is that ? I saw some post's where the timer was getting garbage collected so to prevent this i used GC.KeepAlive(_timer); in one of my methods but even after adding this line it still stops ticking. Am i not preventing the GC in the correct way ? Or something else is happening ? I would like to lower the interval even more but I'm not sure if can go lower than 55ms.
This is my second question on StackOverflow here. I posted my first question a while ago and got a working reply in no time, much impressed, much appreciated.
Anyways, so what I want to know is, how to get a DispatcherTimer to work and show time in a certain textbox and stop it when it reaches a certain time (let's say 60 seconds) and perform a function after 60 seconds.
What I'm basically using this for is :
Making a game, which has to stop after 60 seconds and show the scores or related stuff. So this requires me to show the time in a textbox and perform a function at 60 seconds or after that.
Here's more information :
Textbox is called "timerbox"
Here's the code I've tried :
DispatcherTimer dt = new DispatcherTimer();
private void TimerStart(object sender, RoutedEventArgs e)
{
dt.Interval = TimeSpan.FromSeconds(1);
dt.Tick += dt_Tick;
dt.Start();
}
int count = 0;
void dt_Tick(object sender, object e)
{
count = count + 1;
timerbox.Text = Convert.ToString(count);
}
It doesn't show the time in textbox, plus I don't know how to make it stop at certain point and perform a function.
Thank you for reaching here, please leave answers with full explanation as I'm a complete beginner :)
P.S. I'm using Windows Store App Development Environment in Visual Studio 2013.
And there's no "Timer" in it as there is in normal C# Environment.
AOA.
I am recently started learning c#. (interested in windows form application). Hope this help you.
if you just want to set timer for a curtain event.....
recommend you using timer ( in toolbox )......
follow steps, when you double click on timer1 VS will create a timer1_Tick function for you which will be called every timer you timer ticks.....
now what you want to do when timer1 icks write it in there....like this....
private void timer1_Tick(object sender, EventArgs e)
{
//enter your code here
}
now write timer1. and VS will display a list of avaliable function....
for example,
timer1.Interval = (60*1000); //enter time in milliseconds
now when you want to start the write......
timer1.Start();
and to stop timer at any timer call
timer1.Stop();
if you want to repeat timer just write timer1.start() in that tick function.....
plus, to set textbox text equal to timer1 time use something like
textBox1.Text = Convert.ToString(timer1.Interval);
Click here for more information on timer class
hope this help you,
in case of any confusion, just comment,.....
The normal flow of a DispatcherTimer would look like this:
First Set up your new Object, set up the a new EventHandler that will run your desired code each Tick and Set the Timespan for the desired Tick Interval.
public MainPage()
{
this.InitializeComponent();
timer = new DispatcherTimer();
timer.Tick += new EventHandler<object>(timer_Tick);
timer.Interval = TimeSpan.FromMilliseconds(bpm);
}
Set The Timer_Tick Envent
async Void timer_Tick(object Sender, object e)
{
await this.Dispatcher.RunAsync(Windows.UI.core.CoreDispatcherPriority.High, () =>
{
//Run the Code
textBox1.text = timer.interval.TotalMilliseconds.ToString();
});
You have to have a trigger to Start the Dispatcher(and to stop if you need to), for example a button
private void StartButton_Click()
{
timer.Start();
}
This example was done using The new windows 10 Universal App platform within VS2015, but I think it should look about the same in a normal windows 8 App
This question already has answers here:
How do you add a timer to a C# console application
(12 answers)
Closed 3 years ago.
What is the best way to implement a timer? A code sample would be great! For this question, "best" is defined as most reliable (least number of misfires) and precise. If I specify an interval of 15 seconds, I want the target method invoked every 15 seconds, not every 10 - 20 seconds. On the other hand, I don't need nanosecond accuracy. In this example, it would be acceptable for the method to fire every 14.51 - 15.49 seconds.
Use the Timer class.
public static void Main()
{
System.Timers.Timer aTimer = new System.Timers.Timer();
aTimer.Elapsed += new ElapsedEventHandler(OnTimedEvent);
aTimer.Interval = 5000;
aTimer.Enabled = true;
Console.WriteLine("Press \'q\' to quit the sample.");
while(Console.Read() != 'q');
}
// Specify what you want to happen when the Elapsed event is raised.
private static void OnTimedEvent(object source, ElapsedEventArgs e)
{
Console.WriteLine("Hello World!");
}
The Elapsed event will be raised every X amount of milliseconds, specified by the Interval property on the Timer object. It will call the Event Handler method you specify. In the example above, it is OnTimedEvent.
By using System.Windows.Forms.Timer class you can achieve what you need.
System.Windows.Forms.Timer t = new System.Windows.Forms.Timer();
t.Interval = 15000; // specify interval time as you want
t.Tick += new EventHandler(timer_Tick);
t.Start();
void timer_Tick(object sender, EventArgs e)
{
//Call method
}
By using stop() method you can stop timer.
t.Stop();
It's not clear what type of application you're going to develop (desktop, web, console...)
The general answer, if you're developing Windows.Forms application, is use of
System.Windows.Forms.Timer class. The benefit of this is that it runs on UI thread, so it's simple just define it, subscribe to its Tick event and run your code on every 15 second.
If you do something else then windows forms (it's not clear from the question), you can choose System.Timers.Timer, but this one runs on other thread, so if you are going to act on some UI elements from the its Elapsed event, you have to manage it with "invoking" access.
Reference ServiceBase to your class and put the below code in the OnStartevent:
Constants.TimeIntervalValue = 1 (hour)..Ideally you should set this value in config file.
StartSendingMails = function name you want to run in the application.
protected override void OnStart(string[] args)
{
// It tells in what interval the service will run each time.
Int32 timeInterval = Int32.Parse(Constants.TimeIntervalValue) * 60 * 60 * 1000;
base.OnStart(args);
TimerCallback timerDelegate = new TimerCallback(StartSendingMails);
serviceTimer = new Timer(timerDelegate, null, 0, Convert.ToInt32(timeInterval));
}
I seem to have a thread issue I think, I have written a timer to return to the main screen if its on any other screen for 5 seconds. This code works fine the first time the ResetScreen() is called, but after it returns to the main screen itself, I can't navigate to any other screen as it keeps returning to the Timer event handler.
I also tested this without the this.Dispatcher.Invoke and replaced it with a message box, and it just constant pops up about every second.
private void ResetScreen()
{
if (!mainScreen)
{
myTimer = new System.Timers.Timer();
myTimer.Elapsed += new ElapsedEventHandler(OnTimedEvent);
myTimer.Interval = 5000;
myTimer.Start();
}
}
private void OnTimedEvent(object source, ElapsedEventArgs e)
{
myTimer.Stop();
this.Dispatcher.Invoke((Action)(() =>
{
// show main screen
}));
}
Edit:
I think its just a timer issue in general. Just can't seem to stop the timer.
When using System.Timers.Timer() you need to explicitly set the AutoReset property to false:
myTimer = new System.Timers.Timer();
myTimer.Elapsed += new ElapsedEventHandler(OnTimedEvent);
myTimer.Interval = 5000;
myTimer.AutoReset = false;
myTimer.Start();
Check out the documentation and examples on MSDN.