C#设计模式之建造者(Builder)模式示例源代码-.NET教程,C#语言

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);
  }

 
 }
}