C#源码学习之---事件经典例子

源码下载:http://dl2.csdn.net/down4/20070910/10205102226.rar 

using System;
using System.Collections.Generic;
using System.Text;

namespace ConsAppEvents
...{
    public delegate void MyEventHandle(object i_sender, object i_arg);
    class Program
    ...{
        static void Main(string[] args)
        ...{
            Class3 m_runOject = new Class3();
            m_runOject.OnError += new MyEventHandle(m_runOject_OnError);
            m_runOject.OnSomeThingHappened += new MyEventHandle(m_runOject_OnSomeThingHappened);
            m_runOject.Run();
            Console.ReadKey();

        }
        private static void m_runOject_OnError(object i_sender, object i_arg)
        ...{
            Console.WriteLine("Error in {0}, arg:{1}", i_sender, i_arg);
            Console.WriteLine("object {0} will stop running.", i_sender);
            ((Class3)i_sender).Stop();
        }

        private static void m_runOject_OnSomeThingHappened(object i_sender, object i_arg)
        ...{
            Console.WriteLine("Something happended in {0}, arg:{1}", i_sender, i_arg);
        }

    }
 public class Class3
    ...{
        public bool m_isStop = false;
        public event MyEventHandle OnSomeThingHappened;
        public event MyEventHandle OnError;

        public Class3()
        ...{
        }

        public void Run()
        ...{
            Random m_rand = new Random();
            int m_randomNum = m_rand.Next();
            while (!m_isStop)
            ...{
                if (m_isStop) ...{ break; }
                m_randomNum = m_rand.Next(100);
                if (m_randomNum % 5 == 0)
                ...{
                    if (this.OnError != null)
                    ...{
                        this.OnError(this, m_randomNum);
                    }
                }
                else
                ...{
                    if (this.OnSomeThingHappened != null)
                    ...{
                        this.OnSomeThingHappened(this, m_randomNum);
                    }
                }
            }
        }

        public void Stop()
        ...{
            m_isStop = true;
        }
    }

}