class Product

{

private string partA; //定义部件，部件可以是任意类型，包括值类型和引用类型

private string partB;

private string partC;

public string PartA

{

        get { return partA; }

        set { partA = value; }

    }

    public string PartB

    {

        get { return partB; }

        set { partB = value; }

    }

    public string PartC

    {

        get { return partC; }

        set { partC = value; }

    }

}

abstract class Builder

{

    //创建产品对象

    protected Product product = new Product();

    public abstract void BuildPartA();

    public abstract void BuildPartB();

    public abstract void BuildPartC();

    //返回产品对象

    public Product GetResult()

    {

        return product;

    }

}

class ConcreteBuilder1 : Builder

{

    public override void BuildPartA()

    {

        product.PartA = "A1";

    }

    public override void BuildPartB()

    {

        product.PartB = "B1";

    }

    public override void BuildPartC()

    {

        product.PartC = "C1";

    }

}

class Director

{

    private Builder builder;

    public Director(Builder builder)

   {

        this.builder = builder;

    }

    public void SetBuilder(Builder builder)

    {

        this.builder = builder;

    }

    //产品构建与组装方法

    public Product Construct()

    {

        builder.BuildPartA();

        builder.BuildPartB();

        builder.BuildPartC();

        return builder.GetResult();

    }

}

……

Builder builder = new ConcreteBuilder1(); //可通过配置文件实现

Director director = new Director(builder);

Product product = director.Construct();

……