简单的时间代码，易学易懂

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

namespace ConsoleApplication2
{
    class userEv : EventArgs
    {
        private string  input;

        public string  inputtext
        {
            get
            {
                return input;
            }
            set 
            {
                input = value;
            }
        }
       
    }
    class Class1
    {
        public delegate void userd(object  sender,userEv e1);

        public event userd userev;

       public void run()