C#设计模式之建造者(Builder)模式示例源代码

using System;
using System.Collections;

//product
public class Computer
{
private string Type;
private Hashtable info=new Hashtable ();
public Computer(string type)
{
Type=type;
Console .WriteLine ("Conputer " type " is Builded!");
}

public string this[string key]
{
get
{
return (string)info[key];
}
set
{
info[key]=value;
}
}
public void Show()
{
Console .WriteLine ("this is a computer of " Type " :");
Console .WriteLine (" " info["cpu"]);
Console .WriteLine (" " info["ram"]);
}
}

//Builder
public abstract class Builder
{
protected Computer computer;

public Computer Computpter
{
get
{
return computer;
}
}
public Builder(string type)
{
computer=new Computer (type);
}
abstract public void BuildCpu();
abstract public void BuilderRam();

}

public class MacBuilder:Builder
{
public MacBuilder(string type):base(type)
{}
public override void BuildCpu()
{
computer["cpu"]="MacCpu";
}
public override void BuilderRam()
{
computer["ram"]="MacCpu";
}

}

public class pcBuilder:Builder
{
public pcBuilder(string type):base(type)
{}
public override void BuildCpu()
{
computer["cpu"]="pcCpu";
}
public override void BuilderRam()
{
computer["ram"]="pcCpu";
}

}

public class Worker
{
public void Construct(Builder builder)
{

builder.BuildCpu();
builder.BuilderRam();
}
}

public class CEO
{

public static void Main()
{
try
{
Worker Worker=new Worker ();
Builder PcBuilder=new pcBuilder ("Pc");
Builder MacBuilder=new MacBuilder ("Mac");

Worker .Construct(PcBuilder);
Worker.Construct(MacBuilder);

PcBuilder.Computpter.Show ();
MacBuilder.Computpter.Show ();
}
catch(Exception ex)
{
Console.WriteLine ("Error:" ex.Source " " ex.InnerException ex.StackTrace ex.TargetSite);
}

}
}