Question

I am trying to create an event that executes a function when a certain amount of time has changed. The timer is done by another code, it’s supposed to call Plus(1), but will that change all timers (if I create multiple)? And this code is not actually working.

namespace @event
{
    class Program
    {
        static void Main(string[] args)
        {
            Tick tijd = new Tick();
            tijd.interval = 10;
            tijd.TijdVeranderd += new EventHandler(Uitvoeren);
            dynamic func = new Tick();

            for (int i = 0; i < 100; i++)
            {
                func.Plus(1);
            }

            Console.ReadLine();
        }

        static void Uitvoeren(object sender, EventArgs e)
        {
            Console.WriteLine("Uitgevoerd!");
        }
    }

    public class Tick
    {
        public event EventHandler TijdVeranderd;

        public int interval;

        private int tijd;

        public void Plus(int i)
        {
            tijd += 1;
        }

        public int Verander
        {
            get { return this.tijd; }
            set
            {
                this.tijd = value;

                if (tijd == interval)
                {
                    if (this.TijdVeranderd != null)
                        this.TijdVeranderd(this, new EventArgs());

                    tijd = 0;
                }
            }
        }

        public Tick() { }
    }
}

EDIT: I don’t want to use the .net timer, I want to create my own.

Answer 1

There seem to be a couple of errors in your code:

First of all, in Main, you are calling Plus() on a different instance of Tick than the one that you configured. Try using tijd.Plus(1) instead of func.Plus(1).

Also, in the implementation of Plus, when you increment the private variable tijd, the code associated with the property Verander does not get executed, so no events ever fire. To quickly fix, increment Verander instead of tijd.

namespace @event
{
    class Program
    {
        static void Main(string[] args)
        {
            Tick tijd = new Tick();
            tijd.interval = 10;
            tijd.TijdVeranderd += new EventHandler(Uitvoeren);

            for (int i = 0; i < 100; i++)
            {
                tijd.Plus(1);
            }

            Console.ReadLine();
        }

        static void Uitvoeren(object sender, EventArgs e)
        {
            Console.WriteLine("Uitgevoerd!");
        }
    }

    public class Tick
    {
        public event EventHandler TijdVeranderd;

        public int interval;

        private int tijd;

        public void Plus(int i)
        {
            Verander += 1;
        }

        public int Verander
        {
            get { return this.tijd; }
            set
            {
                this.tijd = value;

                if (tijd == interval)
                {
                    if (this.TijdVeranderd != null)
                        this.TijdVeranderd(this, new EventArgs());

                    tijd = 0;
                }
            }
        }

        public Tick() { }
    }
}