WPF_Practice/PacticeSolution/DelegateEventFuncAction/EventTest.cs

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;

namespace DelegateEventFuncAction
{
    public class EventTest
    {
        public delegate void CustomEventHandler(string message);

        public event CustomEventHandler Trigger;

        public event Action<string> TriggerByAction;

        public void Notify()
        {
            Random rnd = new Random();
            int r = rnd.Next(0, 10);

            if (r <= 7 && this.Trigger != null)
                this.Trigger("70% probability");

            if (r <= 5 && this.TriggerByAction != null)
                this.TriggerByAction("50% probability");
        }
    }
}