11-3.cs

来自「这是学习java基础的好的源代码的学习资料」· CS 代码 · 共 81 行

//程序11-3
using System;
interface IDistributable
{
	void Distribute();
	void Store();
}
interface ISalable
{
	void Sale();
	void Distribute();
}
public class Publish:IDistributable,ISalable
{
	protected int num;
	protected double prc;
	public Publish()
	{}
	public Publish(int n, double p)
	{
		num=n;
		prc=p;
	}
	public void Distribute()   // 实现接口成员
	{
		Console.WriteLine("Distributed in campus only.");
	}
	public void Sale()         // 实现接口成员
	{
		Console.WriteLine("Sale on cost.");
	}
	void ISalable.Distribute()  // 实现显式接口成员
	{
		Console.WriteLine("Where to distribute?");
	}
	void IDistributable.Store()  // 实现显式接口成员
	{
		Console.WriteLine("To Store.");
	}
	public void ToPublish ()
	{
		Console.WriteLine("Number: {0}, Price: ￥{1} ",num,prc);
		//ISalable.Distribute();          //错误，无法直接调用显式接口成员实现
		((ISalable)this).Distribute();    //允许通过转换调用显式接口成员实现
	}
}
public class LectureNotes :Publish
{
	protected string Name;
	public LectureNotes()
	{}
	public LectureNotes(string nm,int n, double p):base(n,p)
	{
		Name = nm; 
		num=n;
		prc=p;
	}
	public void Title()
	{
		Console.WriteLine("The LectureNotes Title:  "+Name);
	}
	public void ForStore()
	{
		((IDistributable)this).Store(); //在派生类中调用基类的显式接口成员实现
	}
}
public class Test
{
	public static void Main()
	{
		LectureNotes LN = new LectureNotes("C# Programming", 400, 28.6); //类对象
		ISalable ExplicitImpl = LN; //接口对象
		LN.Title();
		LN.ToPublish();
		ExplicitImpl.Distribute();      //通过接口对象调用显式接口成员实现
		((ISalable)LN).Distribute(); //通过对类对象的转换调用显式接口成员实现
		LN.Distribute();	          //通过类对象调用接口成员实现
		LN.Sale();
		LN.ForStore();
	}
}