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Compte à rebours en secondes

J'ai un lblCountdown avec une valeur int de 60. Je veux que la valeur int du lblCountDown diminue avec des secondes jusqu'à atteindre 0.

C'est ce que j'ai jusqu'ici:

   private int counter = 60;
    private void button1_Click(object sender, EventArgs e)
    {
        int counter = 60;
        timer1 = new Timer();
        timer1.Tick += new EventHandler(timer1_Tick);
        timer1.Interval = 1000; // 1 second
        timer1.Start();
        label1.Text = counter.ToString();
    }

    private void timer1_Tick(object sender, EventArgs e)
    {
        counter--;
        if (counter == 0)

            timer1.Stop();
            label1.Text = counter.ToString();

    }
c#stringtimer
9
MizLucid

Utiliser la minuterie pour cela

   private System.Windows.Forms.Timer timer1; 
   private int counter = 60;
   private void btnStart_Click_1(object sender, EventArgs e)
   {
        timer1 = new System.Windows.Forms.Timer();
        timer1.Tick += new EventHandler(timer1_Tick);
        timer1.Interval = 1000; // 1 second
        timer1.Start();
        lblCountDown.Text = counter.ToString();
    }

    private void timer1_Tick(object sender, EventArgs e)
    {
        counter--;
        if (counter == 0)
            timer1.Stop();
        lblCountDown.Text = counter.ToString();
    }
16
Stecya
int segundo = 0;
DateTime dt = new DateTime();

private void timer1_Tick(object sender, EventArgs e){
    segundo++;
    label1.Text = dt.AddSeconds(segundo).ToString("HH:mm:ss");
}
3
Pablo

Vous devrez utiliser un minuteur et vous connecter à l'événement Tick pour faire ce que vous cherchez . http://msdn.Microsoft.com/en-us/library/system.windows.forms timer.aspx

1
Paul

Comment utiliser la classe Timer de .NET Framework? http://msdn.Microsoft.com/en-us/library/0tcs6ww8.aspx

0
Bueller

Vous avez besoin d'une classe publique pour que Form1 s'initialise. 

Voir ce code:

namespace TimerApp
{
    public partial class Form1 : Form
    {
        public Form1()
        {
            InitializeComponent();
        }

        private int counter = 60;
        private void button1_Click(object sender, EventArgs e)
        {
            //Insert your code from before
        }

        private void timer1_Tick(object sender, EventArgs e)
        {
            //Again insert your code
        }
    }
}

J'ai essayé et tout a bien fonctionné

Si vous avez besoin d'aide, n'hésitez pas à commenter :)

0
Ben Halsey

 enter image description here .

Usage:

CountDownTimer timer = new CountDownTimer();


//set to 30 mins
timer.SetTime(30,0);     

timer.Start();

//update label text
timer.TimeChanged += () => Label1.Text = timer.TimeLeftMsStr; 

// show messageBox on timer = 00:00.000
timer.CountDownFinished += () => MessageBox.Show("Timer finished the work!"); 

//timer step. By default is 1 second
timer.StepMs = 33;

et n'oubliez pas de Dispose(); quand la minuterie est inutile pour vous;

Code source:

using System;
using System.Windows.Forms;

public class CountDownTimer : IDisposable
{
    public Action TimeChanged;
    public Action CountDownFinished;

    public bool IsRunnign => timer.Enabled;

    public int StepMs
    {
        get => timer.Interval;
        set => timer.Interval = value;
    }

    private Timer timer = new Timer();

    private DateTime _maxTime = new DateTime(1, 1, 1, 0, 30, 0);
    private DateTime _minTime = new DateTime(1, 1, 1, 0, 0, 0);

    public DateTime TimeLeft { get; private set; }
    private long TimeLeftMs => TimeLeft.Ticks / TimeSpan.TicksPerMillisecond;

    public string TimeLeftStr => TimeLeft.ToString("mm:ss");

    public string TimeLeftMsStr => TimeLeft.ToString("mm:ss.fff");

    private void TimerTick(object sender, EventArgs e)
    {
        if (TimeLeftMs > timer.Interval)
        {
            TimeLeft = TimeLeft.AddMilliseconds(-timer.Interval);
            TimeChanged?.Invoke();
        }
        else
        {
            Stop();
            TimeLeft = _minTime;

            TimeChanged?.Invoke();
            CountDownFinished?.Invoke();
        }
    }

    public CountDownTimer(int min, int sec)
    {
        SetTime(min, sec);
        Init();
    }

    public CountDownTimer(DateTime dt)
    {
        SetTime(dt);
        Init();
    }

    public CountDownTimer()
    {
        Init();
    }

    private void Init()
    {
        TimeLeft = _maxTime;

        StepMs = 1000;
        timer.Tick += new EventHandler(TimerTick);
    }

    public void SetTime(DateTime dt) {
        TimeLeft = _maxTime = dt;
        TimeChanged?.Invoke();
    }

    public void SetTime(int min, int sec=0) => SetTime(new DateTime(1, 1, 1, 0, min, sec));

    public void Start() => timer.Start();

    public void Pause() => timer.Stop();

    public void Stop()
    {
        Pause();
        Reset();
    }

    public void Reset()
    {
        TimeLeft = _maxTime;
    }

    public void Restart()
    {
        Reset();
        Start();
    }

    public  void Dispose() => timer.Dispose();
}
0
Andrew