My program has a parameter that starts up the winform and waits x number of seconds before it runs a function. Currently I am using Thread Sleep for x seconds and then the function runs. how can I add a timer in the strip status label?
so that it says: x Seconds Remaining...
Instead of blocking thread execution, simply call your method when required timeout passes. Place new Timer to your form, and set it's Interval to 1000. Then subscribe to timer's Tick event and calculate elapsed time in event handler:
private int secondsToWait = 42;
private DateTime startTime;
private void button_Click(object sender, EventArgs e)
{
timer.Start(); // start timer (you can do it on form load, if you need)
startTime = DateTime.Now; // and remember start time
}
private void timer_Tick(object sender, EventArgs e)
{
int elapsedSeconds = (int)(DateTime.Now - startTime).TotalSeconds;
int remainingSeconds = secondsToWait - elapsedSeconds;
if (remainingSeconds <= 0)
{
// run your function
timer.Stop();
}
toolStripStatusLabel.Text =
String.Format("{0} seconds remaining...", remainingSeconds);
}
You can use a Timer:
public class Form1 : Form {
public Form1(){
InitializeComponent();
t = new Timer {Interval = 1000};
t.Tick += Tick;
//try counting down the time
CountDown(100);
}
DateTime start;
Timer t;
long s;
public void CountDown(long seconds){
start = DateTime.Now;
s = seconds;
t.Start();
}
private void Tick(object sender, EventArgs e){
long remainingSeconds = s - (DateTime.Now - start).TotalSeconds;
if(remainingSeconds <= 0) {
t.Stop();
toolStripStatusLabel1.Text = "Done!";
return;
}
toolStripStatusLabel1.Text = string.Format("{0} seconds remaining...", remainingSeconds);
}
}
Related
I'm implementing a countdown in my app
private async void Window_Activated(object sender, WindowActivatedEventArgs args)
{
dispatcherTimer = new DispatcherTimer();
dispatcherTimer.Tick += dispatcherTimer_Tick;
dispatcherTimer.Interval = new TimeSpan(0,1,0);
dispatcherTimer.Start();
}
private void dispatcherTimer_Tick(object sender, object e)
{
TimeSpan timeSpan = new TimeSpan(blockTime.Hours, blockTime.Minutes, blockTime.Seconds);
if (timeSpan != TimeSpan.Zero)
{
timeSpan = timeSpan.Subtract(TimeSpan.FromMinutes(1));
Countdown_TexBlock.Text = String.Format("{0}:{1}", timeSpan.Hours, timeSpan.Minutes);
dispatcherTimer.Start();
}
else
{
dispatcherTimer.Stop();
}
}
The code works but only one time
For example I put 15 minutes in the blocktime (the time that the countdown will be running)
after a minute the countdown.text would be 0:14.
So only works after the first minute
Is not supposed to be restarted with dispatcher.start()
In the code that you posted, I don't see the blockTime variable being changed to any other value than it has in the beginning. This means that on every tick of dispatchTimer the value of the timeSpan.Subtract expression will always evaluate to the same 14 minutes. In your code, that 14 minutes is assigned to a local vaiable that is disposed when the tick is over. This gives the appearance that the dispatchTimer has stopped issuing Tick when it hasn't.
Here's what I ran that works as expected (for testing, I changed the minutes to seconds to make it observable in a reasonable time).
public sealed partial class MainWindow : Window
{
public MainWindow()
{
this.InitializeComponent();
// Create the dispatch timer ONCE
dispatcherTimer = new DispatcherTimer();
dispatcherTimer.Tick += DispatcherTimer_Tick;
dispatcherTimer.Interval = TimeSpan.FromSeconds(1);
// This will restart the timer every
// time the window is activated
this.Activated += (sender, e) =>
{
startOrRestartDispatchTimer();
};
}
private void startOrRestartDispatchTimer()
{
dispatcherTimer.Stop(); // If already running
blockTime = TimeSpan.FromSeconds(15);
Countdown_TexBlock.Text = blockTime.ToString();
dispatcherTimer.Start();
}
private void DispatcherTimer_Tick(object sender, object e)
{
if (blockTime > TimeSpan.Zero)
{
blockTime = blockTime.Subtract(TimeSpan.FromSeconds(1));
Countdown_TexBlock.Text = blockTime.ToString();
if (blockTime == TimeSpan.Zero)
{
Countdown_TexBlock.Text = "Done";
dispatcherTimer.Stop();
}
}
}
TimeSpan blockTime = TimeSpan.FromSeconds(15);
private DispatcherTimer dispatcherTimer;
// This will restart the timer when the button is clicked.
private void buttonRestart_Click(object sender, RoutedEventArgs e) =>
startOrRestartDispatchTimer();
}
This is my implementation of a Win Form app that has a countdown timer:
readonly DateTime myThreshold;
public Form1()
{
InitializeComponent();
myThreshold = Utils.GetDate();
Timer timer = new Timer();
timer.Interval = 1000; //1 second
timer.Tick += new EventHandler(t_Tick);
timer.Start();
//Threshold check - this only fires once insted of each second
if (DateTime.Now.CompareTo(myThreshold) > 0)
{
// STOP THE TIMER
timer.Stop();
}
else
{
//do other stuff
}
}
void t_Tick(object sender, EventArgs e)
{
TimeSpan timeSpan = myThreshold.Subtract(DateTime.Now);
this.labelTimer.Text = timeSpan.ToString("d' Countdown - 'hh':'mm':'ss''");
}
The wanted behavior is to stop the timer and the tick function when the threshold is reached.
This now does not happens because the check is only executed once since it is placed in the Form1 initialization.
Does exist a way to add this check in a way to immediately stop the Timer once a condition has been meet?
If we define timer as a class field (so it can be accessed from all methods in the class), then we can just add the check to the Tick event itself, and stop the timer from there:
private Timer timer = new Timer();
void t_Tick(object sender, EventArgs e)
{
// Stop the timer if we've reached the threshold
if (DateTime.Now > myThreshold) timer.Stop();
TimeSpan timeSpan = myThreshold.Subtract(DateTime.Now);
this.labelTimer.Text = timeSpan.ToString("d' Countdown - 'hh':'mm':'ss''");
}
initialize the components
System.Timers.Timer t;
int h, m, s;
I want to reset the timer when I click on the reset button and turn it to 00.00.00, but when I try to reset it with the code the timer stops. But when I start the timer and stop it, it doesn't get reset to 00.00.00
Method of timer
private void OnTimeEvent(object sender, ElapsedEventArgs e)
{
Invoke(new Action(() =>
{
s += 1;
if (s == 60)
{
s = 0;
m += 1;
}
if (m == 60)
{
m = 0;
h += 1;
}
lbltime.Text = string.Format("{0}:{1}:{2}", h.ToString().PadLeft(2, '0'),
m.ToString().PadLeft(2, '0'), s.ToString().PadLeft(2, '0'));
}));
}
Form load event
t = new System.Timers.Timer();
t.Interval = 1000;
t.Elapsed += OnTimeEvent;
t.Start();
Reset Button Which is not working
t.Dispose();
Try something like this:
Stopwatch stopwatch = Stopwatch.StartNew();
private void OnTimeEvent(object sender, ElapsedEventArgs e)
{
Invoke(new Action(() => lbltime.Text = stopwatch.Elapsed.ToString("hh:mm:ss")));
}
private void OnResetButtonClick(object sender, EventArgs e)
{
stopwatch.Restart();
}
This uses a stopwatch to measure the time, and a timer to update the label from the stopwatch. This will also be much more accurate since timers do not guarantee any particular tick-frequency.
I need to display the elapsed time dynamically. My code will pop up a message based on an interval value.
public void button1_Click(object sender, EventArgs e)
{
this.TopMost = true;
DialogResult result1 = MessageBox.Show("Add some notes to your current ticket?",
"Add Notes",
MessageBoxButtons.YesNo);
if (result1 == DialogResult.Yes)
{
Timer tm;
tm = new Timer();
int minutes = int.Parse(textBox2.Text);
tm.Interval = (int)TimeSpan.FromMinutes(minutes).TotalMilliseconds;
tm.Tick += new EventHandler(button1_Click);
tm.Enabled = true;
string pastebuffer = DateTime.Now.ToString();
pastebuffer = "### Edited on " + pastebuffer + " by " + txtUsername.Text + " ###";
Clipboard.SetText(pastebuffer);
tm.Start();
}
else if (result1 == DialogResult.No)
{
}
this.TopMost = false;
}
If I have defined 15 mins in my interval how do i get the countdown to show in a label?
You should store end-time in a filed at form level and then in Tick event handler of the timer check the difference between the end-time and now and update a label which you want to show count-down timer:
private DateTime endTime;
System.Windows.Forms.Timer timer = new System.Windows.Forms.Timer();
private void button1_Click(object sender, EventArgs e)
{
var minutes = 0;
if (int.TryParse(textBox1.Text, out minutes) && timer.Enabled == false)
{
endTime = DateTime.Now.AddMinutes(minutes);
timer.Interval = 1000;
timer.Tick -= new EventHandler(timer_Tick);
timer.Tick += new EventHandler(timer_Tick);
timer.Start();
UpdateText();
}
}
void timer_Tick(object sender, EventArgs e)
{
UpdateText();
}
void UpdateText()
{
var diff = endTime.Subtract(DateTime.Now);
if (diff.TotalSeconds > 0)
label1.Text = string.Format("{0:D2}:{1:D2}:{2:D2}",
diff.Hours, diff.Minutes, diff.Seconds);
else
{
this.Text = "00:00:00";
timer.Enabled = false;
}
}
I wouldn't muck about with timers. I'd use Microsoft's Reactive Framework for this. Just NuGet "Rx-Winforms" to get the bits. Then you can do this:
Observable
.Create<string>(o =>
{
var now = DateTimeOffset.Now;
var end = now.AddMinutes(15.0);
return
Observable
.Interval(TimeSpan.FromSeconds(0.1))
.TakeUntil(end)
.Select(x => end.Subtract(DateTimeOffset.Now).ToString(#"mm\:ss"))
.DistinctUntilChanged()
.Subscribe(o);
})
.ObserveOn(this)
.Subscribe(x => label1.Text = x);
This will automatically create a countdown timer that will update the text in label1 with the following values:
14:59
14:58
14:57
14:56
14:55
14:54
...
00:02
00:01
00:00
If you want to stop this before the timer runs out the Subscribe method returns an IDisposable that you can just call .Dispose().
You should try to count the 15 minutes.
For example, if your using a Label (Label1) you should count it with a timer.
Just use a timer and count every tick (1000 milliseconds) +1
Timer1 has a +1 (declare a int as 0)
If the label reaches the number of seconds or minutes
(You can modify that with milliseconds), it stops the timer.
I have a timer in a console app:
using System.Timers;
Timer Timer = new Timer();
I gave it an interval, and it does stuff at _timer_Elapsed method periodically:
Timer.Elapsed += _timer_Elapsed;
Timer.Enabled = true;
private static void _timer_Elapsed(object sender, ElapsedEventArgs e)
{
...
}
How can I create a second timer that counts down until this timer starts?
Create a second timer that elapses every second and use the following code to count down and a write message to the console.
#define COUNTDOWN_SECONDS 10
private int CountDownValue = COUNTDOWN_SECONDS;
private static void _timer2_Elapsed(object sender, ElapsedEventArgs e)
{
WriteConsoleMessage(CountDownValue--);
if (CountDownValue == 0)
{
// Stop timer2
// Start timer1
}
}
private static void WriteConsoleMessage(int Value)
{
if (Value < COUNTDOWN_SECONDS)
Console.CursorLeft = 0; // Reset cursor to start of the line
Console.Write(string.Format("{0} Seconds until timer starts", Value.ToString());
}
Heres how i did it:
public static int Interval = 5000;
public static int IntervalLeft = Interval;
Timer.Elapsed += _timer_Elapsed;
Timer.Enabled = true;
Timer.Interval = Interval;
CountDownTimer.Elapsed += _CountDowntimer_Elapsed;
CountDownTimer.Enabled = true;
CountDownTimer.Interval = 1000;
CountDownTimer.Start();
private static void _timer_Elapsed(object sender, ElapsedEventArgs e)
{
CountDownTimer.Stop();
Timer.Stop();
DOES THE JOB HERE
Timer.Start();
CountDownTimer.Start();
IntervalLeft = Interval;
}
private static void _CountDowntimer_Elapsed(object sender, ElapsedEventArgs e)
{
Zipper.ClearCurrentConsoleLine();
IntervalLeft = (IntervalLeft - 1000);
Console.Write("Starts in" + IntervalLeft/1000);
}
The first timer one stops the second timer when it elapses...