class1.cs

来自DoFactory的设计模式, 由于是本人根据已有代码创建,没有NETOptimized项

// Builder pattern -- Structural example  

using System;
using System.Collections;

namespace DoFactory.GangOfFour.Builder.Structural
{
    // MainApp test application 

    public class MainApp
    {
        public static void Main()
        {
            // Create director and builders 
            Director director = new Director();

            Builder b1 = new ConcreteBuilder1();
            Builder b2 = new ConcreteBuilder2();

            // Construct two products 
            director.Construct(b1);
            Product p1 = b1.GetResult();
            p1.Show();

            director.Construct(b2);
            Product p2 = b2.GetResult();
            p2.Show();

            // Wait for user 
            Console.Read();
        }
    }

    // "Director" 

    class Director
    {
        // Builder uses a complex series of steps 
        public void Construct(Builder builder)
        {
            builder.BuildPartA();
            builder.BuildPartB();
        }
    }

    // "Builder" 

    abstract class Builder
    {
        public abstract void BuildPartA();
        public abstract void BuildPartB();
        public abstract Product GetResult();
    }

    // "ConcreteBuilder1" 

    class ConcreteBuilder1 : Builder
    {
        private Product product = new Product();

        public override void BuildPartA()
        {
            product.Add("PartA");
        }

        public override void BuildPartB()
        {
            product.Add("PartB");
        }

        public override Product GetResult()
        {
            return product;
        }
    }

    // "ConcreteBuilder2" 

    class ConcreteBuilder2 : Builder
    {
        private Product product = new Product();

        public override void BuildPartA()
        {
            product.Add("PartX");
        }

        public override void BuildPartB()
        {
            product.Add("PartY");
        }

        public override Product GetResult()
        {
            return product;
        }
    }

    // "Product" 

    class Product
    {
        ArrayList parts = new ArrayList();

        public void Add(string part)
        {
            parts.Add(part);
        }

        public void Show()
        {
            Console.WriteLine("\nProduct Parts -------");
            foreach (string part in parts)
                Console.WriteLine(part);
        }
    }
}