using System;

class EtherNet

{

    public  void Send(string data)

    {

        Console.WriteLine("EtherNet is Sending: {0}",data);

    }

}

class COM

{

    public  void Transform(string data)

    {

        Console.WriteLine("COM is Transforming :{0}", data);

    }

}

class USB

{

    public void Transform(string data)

    {

        Console.WriteLine("USB is Transforming :{0}", data);

    }

}

class Computer

{

    [STAThread]

    static void Main(string[] args)

    {

        Console.WriteLine("input device type：");

        string deviceType = Console.ReadLine().ToLower();

        Console.WriteLine(" input data：");

        string data = Console.ReadLine().ToLower();

        switch (deviceType)

        {

            case "net":

                EtherNet net = new EtherNet();

                net.Send(data);

                break;

            case "com":

                COM com = new COM();

                com.Transform(data);

                break;

            case "usb":

                USB usb = new USB();

                usb.Transform(data);

                break;

            default:

                Console.WriteLine(" 对不起，没有此种设备！！");

                break;

        }

    }

}

using System;

interface  Device

{

      void Send(string data) ;

}

class EtherNet : Device

{

    public  void Send(string data)

    {

        Console.WriteLine("EtherNet is Sending: {0}",data);

    }

}

class COM : Device

{

    public  void Send(string data)

    {

        Console.WriteLine("COM is Transforming :{0}", data);

    }

}

class USB : Device

{

    public void Send(string data)

    {

        Console.WriteLine("USB is Transforming :{0}", data);

    }

}

 class Wireless : Device

{

    public void Send(string data)

    {

        Console.WriteLine("Wireless is Transforming :{0}", data);

    }

}

class FactoryDevice

{

   Device device = null;

    public Device CreateDevice(string deviceType)

    {

        switch (deviceType)

        {

            case "net":

                device = new EtherNet();

                break;

            case "com":

                device = new COM();

                break;

            case "usb":

                device = new USB();

                break;

            case "wireless":

                device = new Wireless();

                break;

            default:

                Console.WriteLine(" 对不起，没有此种设备！！");

                break;

        }

        return device;

    }

}

class Computer

{

    [STAThread]

    static void Main(string[] args)

    {

        Console.WriteLine(" 请输入设备类型：");

        string deviceType = Console.ReadLine().ToLower();

        Console.WriteLine(" 请输入要发送的数据：");

        string data = Console.ReadLine().ToLower();

        FactoryDevice fac = new FactoryDevice();

        Device device = fac.CreateDevice(deviceType);

       device.Send(data);

Console.ReadLine();

    }

}