using System;
namespace Heool2
{
    public delegate void DivBySevenHandler(object o,DivBySeventEventArgs e);//DivBySeventEventArgs
    public class DivBySeventEventArgs : EventArgs
    {
        public readonly int TheNumber;
        public DivBySeventEventArgs(int num)
        {
            TheNumber = num;
        }
    }
    public class DivBySeventListener
    {
        public void ShowOnScreen(object o, DivBySeventEventArgs e)
        {
            Console.WriteLine("遇到了可以被7整除的数，他是：{0}", e.TheNumber);
        }
    }
    public class s1
    {
        public static event DivBySevenHandler EventSeven;
        public static void Main(string[] args)
        {
            DivBySeventListener dbsl = new DivBySeventListener();
            EventSeven += new DivBySevenHandler(dbsl.ShowOnScreen);
            GenNumber();
            Console.ReadLine();
        }
        public static void OnEventSevent(DivBySeventEventArgs e)
        {
            if (EventSeven != null)
                EventSeven(new object(), e);
        }
        public static void GenNumber()
        {
            for (int i = 0; i < 99; i++)
            {
                if (i % 7 == 0)
                {
                    DivBySeventEventArgs e1 = new DivBySeventEventArgs(i);
                    OnEventSevent(e1);
                }
            }
        }


    }
}