RXBlog - CSharp Timer Sample (Sample for RoslynPad)

rxblog-csharptimer.cs

public class TimeStopWhenNoOneCares
{
    private long _Time;
    private CancellationTokenSource _Canceller;

    private Action<long> _TimeHasSpassed;
    public event Action<long> TimeHasSpassed
    {
        add {
            _TimeHasSpassed += value;
            if (_Canceller == null)
            {
                _Canceller = new CancellationTokenSource();
                this.RunTimeInterval( _Canceller.Token );
            }
        }
        remove {
            _TimeHasSpassed -= value;
            if (_TimeHasSpassed == null)
            {
                _Canceller.Cancel();
            }
        }
    }

    private void RunTimeInterval(CancellationToken token)
    {
        Task.Run( ()=>{
        
            while (token.IsCancellationRequested == false)
            {
                _TimeHasSpassed?.Invoke(_Time);  
                
                Task.Delay(1000).Wait();   
                _Time++;
            }
            _Canceller?.Dispose();
            _Canceller = null;
        });
    }
}

TimeStopWhenNoOneCares t = new();
Action<long> processTime = (time)=>{

    Console.WriteLine( time );
};

t.TimeHasSpassed += processTime;

Console.ReadLine();

t.TimeHasSpassed -= processTime;

Console.WriteLine( "Time stop" );
Console.ReadLine();

Console.WriteLine( "Time continue from last value" );
t.TimeHasSpassed += processTime;

Console.ReadLine();