面向接口编程详解 - 图文(8)

public void Read() {

Console.WriteLine(\开始从MP3中读数据......\); Console.WriteLine(\读取完毕!\); }

public void Write() {

Console.WriteLine(\开始从MP3中写入数据......\); Console.WriteLine(\写入完毕!\); }

public void PlayMusic() {

Console.WriteLine(\现在开始播放音乐......\); }

#endregion }

///

public class MobileHardDisk : IMobileStorage {

#region IMobileStorage 成员

public void Read() {

Console.WriteLine(\开始从移动硬盘(MobileHardDisk)中读数据......\); Console.WriteLine(\读取完毕!\); }

public void Write() {

Console.WriteLine(\开始往移动硬盘(MobileHardDisk)中写入数据......\); Console.WriteLine(\写入完毕!\); }

#endregion } /*

* 可以看到，它们都实现了IMobileStorage接口，并重写了各自不同的Read和Write方法。下面，我们来写Computer： * */

///

private IMobileStorage usbDrive; ///

public IMobileStorage UsbDrive {

get { return usbDrive; } set { usbDrive = value; } }

public Computer() { }

///

/// public Computer(IMobileStorage usbDrive) {

this.UsbDrive = usbDrive; }

///

public void ReadData() {

this.UsbDrive.Read(); }

///

public void WriteData() {

this.UsbDrive.Write(); } }

/*

* OK！下面我们来测试我们的“电脑”和“移动存储设备”是否工作正常。我是用的C#控制台程序，具体代码如下： * */

class Program {

static void Main(string[] args) {

Computer computer = new Computer();

IMobileStorage flashDisk = new FlashDisk(); IMobileStorage mp3Player = new MP3Player();