重新学习基础：草稿2
原文发布时间为：2008-11-21 —— 来源于本人的百度文章 [由搬家工具导入]
using System;
using System.Collections.Generic;
using System.Text;
namespace baidu
{
class Class1
{
public static void Main()
{
string str1 = "abcdefghi";
string str2 = string.Copy(str1);
Console.WriteLine(str2);
char[] des ={ 't', 's', 'e' };
str1.CopyTo(1, des, 2, 1);
Console.WriteLine(des);//tsb
string[] a = str1.Split('c');
foreach (string x in a)
Console.WriteLine(x);
StringBuilder sb1 = new StringBuilder("hi", 5);
sb1.Capacity = 6;
StringBuilder sb2 = new StringBuilder("hi");
sb2.Append(" my dear");
Console.WriteLine(sb2);
sb2.AppendFormat("{0:c}", 12);
Console.WriteLine(sb2);
sb2.Insert(1, "ello");
Console.WriteLine(sb2);
sb2.Remove(2, 5);
Console.WriteLine(sb2);
sb2.Replace('￥', '$');
Console.WriteLine(sb2);
string[] week ={ "Sun", "Mon", "tue", "wends", "thirs", "fri", "sata" };
DateTime now = DateTime.Now;
Console.WriteLine("{0:现在是yyyy年MM月dd日，HH点mm分},{1}",now,week[(int)now.DayOfWeek]);
DateTime past = new DateTime(2006, 1, 1, 22, 12, 12);
TimeSpan ts = now - past;
Console.WriteLine("{0},{1},{2}", ts, ts.Days, ts.TotalDays);
Console.WriteLine(Math.Abs(-455214.44));
Console.WriteLine(Math.Ceiling(2.32));
Console.WriteLine(Math.Log(Math.E));
Console.WriteLine(Math.Log10(10));
Console.WriteLine(Math.Sqrt(4));
Console.ReadLine();
}
}
}
------------------------------------------------------------------
using System;
using System.Collections.Generic;
using System.Text;
namespace baidu
{
public delegate void playGameHandler(object sender,EventArgs e);
class Class2
{
public static void Main()
{
wang w = new wang();
zhang z = new zhang();
li l=new li();
z.Playing += new playGameHandler(w.kouqian);
z.Playing+=new playGameHandler(l.daren);
z.playGame();
Console.ReadLine();
}
}
public class wang
{
public wang()
{
}
public void kouqian(object sender, EventArgs e)
{
Console.WriteLine("kou qian ");
zhang z = (zhang)sender;
z.Money = z.Money - 50;
Console.WriteLine(z.Money);
}
}
public class zhang
{
public event playGameHandler Playing;
private int money;
public zhang()
{
money = 100;
}
public int Money
{
get { return money; }
set { money = value; }
}
public void playGame()
{
Console.WriteLine("play game");
EventArgs e = new EventArgs();
onPlayGame(e);
}
protected virtual void onPlayGame(EventArgs e)
{
if (Playing != null)
Playing(this, e);
}
}
public class li
{
public void daren(object sender, EventArgs e)
{
zhang z = (zhang)sender;
Console.WriteLine("da ren");
}
}
}
------------------------------------------------------------
using System;
using System.Collections.Generic;
using System.Text;
namespace baidu
{
public delegate void MieHuoEventHandler(object sender,HuoZhai e);
class Class3
{
public static void Main()
{
Teacher t = new Teacher();
t.MieHuo+=new MieHuoEventHandler(MieHuo);
t.findHZ();
Console.ReadLine();
}
public static void MieHuo(object sender, HuoZhai e)
{
Teacher t = (Teacher)sender;
Console.WriteLine(t.name+ e.DiDian+e.JiRen+"MieHuo");
}
}
public class HuoZhai : EventArgs
{
public string DiDian;
public int JiRen;
public HuoZhai(string dd, int jr)
{
this.DiDian = dd;
this.JiRen = jr;
}
}
public class Teacher
{
public event MieHuoEventHandler MieHuo;
public string name = "Lily";
public void findHZ()
{
HuoZhai hz = new HuoZhai("ShangHai", 4);
BaoJin(hz);
}
public void BaoJin(HuoZhai hz)
{
if (MieHuo != null)
MieHuo(this, hz);
}
}
}
------------------------------------------------------------------
使用委托和事件设计程序：小张和小王上课迟到，则小李就扣掉小张10分，扣掉小王50分，小王觉得自己被多扣了，再找回小李要求改正，小李同意了，补给小王40分，同时再多补5分予以补偿。
using System;
using System.Collections.Generic;
using System.Text;
namespace baidu
{
public delegate void LateEventHandler(object sender,EventArgs e);
class Class4
{
static void Main()
{
Zhang z = new Zhang();
Wang w = new Wang();
Li l = new Li();
Console.WriteLine(z.name + "原来有" + z.Score + "分");
Console.WriteLine(w.name + "原来有" + w.Score + "分");
z.Zlate+=new LateEventHandler(l.zKouFen);
w.Wlate += new LateEventHandler(l.wKouFen);
w.Wask += new LateEventHandler(l.wZengFen);
w.Wask += new LateEventHandler(l.wBuFen);
z.Late();
w.Late();
w.Ask();
Console.ReadLine();
}
}
public class Zhang
{
public string name = "小张";
private int _score=100;
public event LateEventHandler Zlate;
public int Score
{
get { return _score; }
set { _score = value; }
}
public void Late()
{
Console.WriteLine(name + "迟到了");
if (Zlate != null)
Zlate(this, EventArgs.Empty);
}
}
public class Wang
{
public string name = "小王";
private int _score=100;
public event LateEventHandler Wlate;
public event LateEventHandler Wask;
public int Score
{
get { return _score; }
set { _score = value; }
}
public void Late()
{
Console.WriteLine(name + "迟到了");
if (Wlate != null)
Wlate(this,EventArgs.Empty);
}
public void Ask()
{
Console.WriteLine("小王觉得自己被多扣了，再找回小李要求改正");
if (Wask != null)
Wask(this, EventArgs.Empty);
}
}
public class Li
{
public void zKouFen(object sender, EventArgs e)
{
Zhang z = (Zhang)sender;
z.Score = z.Score - 10;
Console.WriteLine("小李扣掉小张10分,现在小张还剩下" + z.Score + "分");
}
public void wKouFen(object sender, EventArgs e)
{
Wang w = (Wang)sender;
w.Score = w.Score - 50;
Console.WriteLine("小李扣掉小王50分,现在小王还剩下" + w.Score + "分");
}
public void wZengFen(object sender, EventArgs e)
{
Wang w = (Wang)sender;
w.Score = w.Score + 40;
Console.WriteLine("小李同意了,小李补给小王40分,现在小王还剩下" + w.Score + "分");
}
public void wBuFen(object sender, EventArgs e)
{
Wang w = (Wang)sender;
w.Score = w.Score + 5;
Console.WriteLine("同时再多补5分予以补偿,现在小王还剩下" + w.Score + "分");
}
}
}
