using System;

using System.Collections.Generic;

public class Program

{

    public static void Main()

    {

        var client = new AlcoClientBuilder()

            .WithEthernetModule("ab2008013")

            .WithPort(443)

            .Build();

        var clientWithAuth = new AlcoClientBuilder()

            .WithEthernetModule("ab2008013")

            .WithPort(443)

            .WithCredentials("user1", "MIGHAg")

            .Build();

    }

}

​

public class AlcoClientBuilder : IBuilder

{

    private string _login;

    private string _password;

    private string _ethernetModuleName;

    private int _port;

    // Конструктор билдера

    public AlcoClientBuilder(){

    }

    public AlcoClientBuilder WithEthernetModule(string name)

    {

        _ethernetModuleName = name;

        return this;

    }

    public AlcoClientBuilder WithPort(int port)

    {

        _port = port;

        return this;

    }

    public AlcoClientBuilder WithCredentials(string login, string password)

    {

        _login = login;

        _password = password;

        return this;

    }

    public Alcotester Build()

    {

        return new Alcotester(_ethernetModuleName, _port, _login, _password, true);

    }

}

​

public class Alcotester{

    public Alcotester(string p1, int p2, string p3, string p4, bool p5) {}

}

​

public interface IBuilder

{

    Alcotester Build();

}