C#设计模式之抽象工厂(abstract factory)模式示…

using System;

namespace Design_Pattern
{

public class Computer
{
private RAM Ram;
private CPU Cpu;
public Computer(RAM ram,CPU cpu)
{
this.Ram =ram;
this.Cpu =cpu;

Console .WriteLine("A Computer is Composed! " this.Ram " " this.Cpu );
}
}

public abstract class RAM
{
public abstract Computer ComposeAComputer(CPU cpu);
}
public abstract class CPU
{
public abstract Computer ComposeAComputer(RAM ram);
}

public class pcRAM:RAM
{
public override Computer ComposeAComputer(CPU cpu)
{
Console .WriteLine ("pcComputer...");

return new Computer(this,cpu);
}

}

public class pcCPU:CPU
{
public override Computer ComposeAComputer(RAM ram)
{
Console .WriteLine ("pcComputer...");

return new Computer(ram,this);
}

}

public class macRAM:RAM
{
public override Computer ComposeAComputer(CPU cpu)
{
Console .WriteLine ("MacComputer...");
return new Computer(this,cpu);
}

}

public class macCPU:CPU
{
public override Computer ComposeAComputer(RAM ram)
{
Console .WriteLine ("MacComputer...");
return new Computer(ram,this);
}

}

public abstract class abstractFactory
{
public abstract RAM CreateRam();
public abstract CPU CreateCpu() ;
}

public class PcFactory:abstractFactory
{
public override RAM CreateRam()
{
return new pcRAM();
}
public override CPU CreateCpu()
{
return new pcCPU();
}

}

public class MacFactory:abstractFactory
{
public override RAM CreateRam()
{
return new macRAM();

}
public override CPU CreateCpu()
{
return new macCPU();
}

}

class ITMarket
{
private RAM ram;
private CPU cpu;
public ITMarket(abstractFactory factory)
{
this.ram =factory.CreateRam();
this.cpu =factory.CreateCpu();
}
public void Run()
{
ram.ComposeAComputer(cpu);
cpu.ComposeAComputer(ram);
}

}

class ClientApp
{
public static void Main(string[] args)
{
Console .WriteLine("PC Factory.....\n");
abstractFactory pcfactory=new PcFactory ();
ITMarket itMarket=new ITMarket (pcfactory);
itMarket .Run ();

Console .WriteLine("MAC Factory.....\n");
abstractFactory macfactory=new MacFactory();
itMarket =new ITMarket (macfactory);
itMarket .Run ();
}
}

}