06-觀察者模式實(shí)驗(yàn)參考模板

1、青 島 理 工 大 學(xué)課程實(shí)驗(yàn)報(bào)告課程名稱軟件設(shè)計(jì)與體系結(jié)構(gòu)班級(jí)軟件132實(shí)驗(yàn)日期2015.06.02姓名田清華學(xué)號(hào)201307208實(shí)驗(yàn)成績(jī)實(shí)驗(yàn)名稱觀察者模式實(shí)驗(yàn)實(shí)驗(yàn)?zāi)康募耙螅?）熟悉觀察者模式的核心思想；（2）掌握觀察者模式解決問(wèn)題的方法。實(shí)驗(yàn)環(huán)境Win7, VS2010實(shí)驗(yàn)內(nèi)容1. 定義內(nèi)部數(shù)據(jù)列表（1）內(nèi)部數(shù)據(jù)列表提供數(shù)據(jù)；（2） 每個(gè)數(shù)據(jù)列表項(xiàng)對(duì)應(yīng)界面表格中的一行。2. 定義界面控件DataGridview3. 利用觀察者模式實(shí)現(xiàn)內(nèi)部存儲(chǔ)的數(shù)據(jù)列表數(shù)據(jù)發(fā)生變化時(shí)，自動(dòng)更新DataGridview中的內(nèi)容。算法描述及實(shí)驗(yàn)步驟1. 創(chuàng)建model類student2. 創(chuàng)建抽象目標(biāo)類da

2、ta3. 創(chuàng)建具體目標(biāo)類concretedata4. 創(chuàng)建觀察者類DataGridview5. 類圖：1 / 7調(diào)試過(guò)程及實(shí)驗(yàn)結(jié)果總結(jié)1. 觀察者模式可以實(shí)現(xiàn)表示層和數(shù)據(jù)邏輯層的分離，定義了穩(wěn)定的消息更新傳遞機(jī)制，并抽象了更新接口，是得可以有各種各樣不用的表示層充當(dāng)具體觀察者角色。2. 在觀察者目標(biāo)和觀察者之間建立一個(gè)抽象的耦合，觀察目標(biāo)只需要維持一個(gè)抽像觀察者的集合，無(wú)需了解其具體觀察者。3. 在C#中實(shí)現(xiàn)Observer模式可以采用更有效的方法-.NET中提供了delegate，委托可以看作是一個(gè)穩(wěn)定的接口（充當(dāng)抽象觀察者角色）。附錄Student.cs:using System;usin

3、g System.Collections.Generic;using System.Linq;using System.Text;using System.Threading.Tasks;namespace shiyan_6 class student private string name; private string sex; private int age; public student(string name,string sex,int age) = name; this.sex = sex; this.age = age; public string Name

4、 get return name; set name = value; public string Sex get return sex; set sex = value; public int Age get return age; set age = value; Data.cs:using System;using System.Collections;using System.Collections.Generic;using System.Linq;using System.Text;using System.Threading.Tasks;namespace shiyan_6 ab

5、stract class data protected List<student> studentList = new List<student>(); protected ArrayList gridviewList = new ArrayList(); /添加觀察者 public abstract void Attach(DataGridview dataGridview); /刪除觀察者 public abstract void Datach(DataGridview dataGridview); public abstract void AddStudent(s

6、tudent stu); public abstract void DeleteStudent(int loc); public abstract void Display(); /通知方法 public abstract void Notify(); concreteData.cs:using System;using System.Collections.Generic;using System.Linq;using System.Text;using System.Threading.Tasks;namespace shiyan_6 class concreteData:data pub

7、lic override void Attach(DataGridview dataGridview) gridviewList.Add(dataGridview); public override void Datach(DataGridview dataGridview) gridviewList.Remove(dataGridview); /實(shí)現(xiàn)通知方法 public override void Notify() int i = 0; foreach(object obj in gridviewList) Console.Write("通知第0個(gè)觀察者：",+i);

8、(DataGridview)obj).UpDate(this); /修改數(shù)據(jù) public override void AddStudent(student stu) studentList.Add(stu); Notify(); public override void DeleteStudent(int loc) studentList.RemoveAt(loc); Notify(); public override void Display() foreach (student stu in studentList) Console.WriteLine(stu.Name+" &

9、quot;+stu.Age+" "+stu.Sex); dataGridview.cs:using System;using System.Collections.Generic;using System.Linq;using System.Text;using System.Threading.Tasks;namespace shiyan_6 class DataGridview private data data = new concreteData(); public DataGridview(data data) this.data = data; Console.

10、WriteLine("創(chuàng)建一個(gè)DataGridview"); public void UpDate(data data) this.data = data; Console.WriteLine("數(shù)據(jù)改變！"); this.data.Display(); Program.cs:using System;using System.Collections.Generic;using System.Linq;using System.Text;using System.Threading.Tasks;namespace shiyan_6 class Progr

11、am static void Main(string args) data data1 = new concreteData(); student stu; DataGridview dataGridview1 = new DataGridview(data1); data1.Attach(dataGridview1); DataGridview dataGridview2= new DataGridview(data1); data1.Attach(dataGridview2); /DataGridview dataGridview3 = new DataGridview(data1); /data1.Attach(dataGridview3); Console.WriteLine("給data添加數(shù)據(jù)"); for (int i = 0; i <3; i+) stu = new student("