How to create timer in C#?

Question

I've tried using System.windows.form and System.Timers.Timer but both are not recognize by visual studio 2017 xamarin form. This made me unable to create Timer time = new Timer(1000);. How do we actually create and set the interval of a timer in C#? I need the full C# code of JavaScript setInterval(function(){ alert("Hello"); }, 3000); for xamarin form.

Answer 1

I think you can take a look to StartTimer

public static Void StartTimer (TimeSpan interval, Func<bool> callback)

interval

The interval between invocations of the callback.

callback

The action to run when the timer elapses.

While the callback returns true, the timer will keep recurring.

Answer 2

public class Timer
{
    CancellationTokenSource _cts = new CancellationTokenSource();

    public Task Wait(TimeSpan delay)
    {
        return Task.Delay(delay, _cts.Token);
    }

    public void Stop()
    {
        _cts.Cancel();
    }
}

usage:

var t = new Timer();
await t.Wait(TimeSpan.FromMinutes(30));

Answer 3

I think you can use this:

await Task.Delay(3000);

DisplayAlert("Hello", "", "OK");