namespace Builder_DesignPattern
{
using System;

// These two classes could be part of a framework,
// which we will call DP
// ===============================================

class Director
{
public void Construct(AbstractBuilder abstractBuilder)
{
abstractBuilder.BuildPartA();
if (1==1 ) //represents some local decision inside director
{
abstractBuilder.BuildPartB();
}
abstractBuilder.BuildPartC();
}

}

abstract class AbstractBuilder
{
abstract public void BuildPartA();
abstract public void BuildPartB();
abstract public void BuildPartC();
}

// These two classes could be part of an application
// =================================================

class ConcreteBuilder : AbstractBuilder
{
override public void BuildPartA()
{
// Create some object here known to ConcreteBuilder
Console.WriteLine("ConcreteBuilder.BuildPartA called");
}

override public void BuildPartB()
{
// Create some object here known to ConcreteBuilder
Console.WriteLine("ConcreteBuilder.BuildPartB called");
}

override public void BuildPartC()
{
// Create some object here known to ConcreteBuilder
Console.WriteLine("ConcreteBuilder.BuildPartC called");
}
}

/// <summary>
/// Summary description for Client.
/// </summary>
public class Client
{
public static int Main(string[] args)
{
ConcreteBuilder concreteBuilder = new ConcreteBuilder();
Director director = new Director();

director.Construct(concreteBuilder);

return 0;
}
}
}