CODEWITHSUNDEEP
c#windows-phone-7.1
iVikD
iVikD

Reputation: 296

How can I add a timer on Windows Phone 7.1?

I'm looking for a way to add a timer (or stopwatch) that will start counting from 0 the moment the application is launched or a button is clicked, and keeps counting even after the user navigates through different pages, and then be able to display how much time has passed in the last page of the application. I've been messing around with the DispatcherTimer class, but to be honest, I'm having trouble understanding it. Any help, or even a nod in the right direction would be greatly appreciated!

Upvotes: 0

Views: 569

Answers (2)

Frederik Winstrup Johansen
Frederik Winstrup Johansen

Reputation: 720

If you want to use a time, you could add one on the page showing time!

Add this code to the constructor or somewhere else where you want to activate the timer. (The App.StartTime is the same as i wrote in the other answer)

        DispatcherTimer timer = new DispatcherTimer();

        timer.Tick +=
            delegate(object s, EventArgs args)
            {
                TimeSpan time = (DateTime.Now - App.StartTime);

                this.timenow.Text = string.Format("{0:D2}:{1:D2}:{2:D2}", time.Hours, time.Minutes, time.Seconds);
            };

        timer.Interval = new TimeSpan(0, 0, 1); // one second
        timer.Start();

Upvotes: 1

Frederik Winstrup Johansen
Frederik Winstrup Johansen

Reputation: 720

You just have to store the time when your app launch and then subtract the current time from the stored value.

in your App.cs store the time when application launch:

    private static DateTime _starttime = DateTime.Now;

    public static DateTime StartTime
    {
        get
        {
            return _starttime;
        }
    }

In your page or any where you need to get the current time the application has run, you just have to subtract then current time from the stored time. I have used it in a button click handler, see below:

    private void timebutton_Click(object sender, RoutedEventArgs e)
    {
        TimeSpan time = (DateTime.Now - App.StartTime);

        this.timenow.Text = string.Format("{0:D2}:{1:D2}:{2:D2}", time.Hours, time.Minutes, time.Seconds);
    }

Upvotes: 1

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