using System;

namespace Factory

{

  // Location class

  public class Location 

  {

    public double Latitude {get; set;}

    public double Longitude {get; set;}

  }

​

  // the 'Product' interface : in this example it is Locaton. So Location will be the product

  public interface ILocationFactory 

  {

    Location GetLocation();

    void WriteLocation(Location location);

  }

  // A 'Concrete Product' class

  public class Home : ILocationFactory

  {

    public Location GetLocation()

    {

        return new Location{Latitude = 40.741895, Longitude = -73.989308 };

    }

    public void  WriteLocation(Location location)

    {

      Console.WriteLine("My Home location resides at latitude: " + location.Latitude + " and longitude: " + location.Longitude + " .");

    }

  }

  // A 'Concrete Product' class

  public class Business : ILocationFactory

  {

    public Location GetLocation()

    {

       return new Location{ Latitude = 40.65133155546328, Longitude = -74.26483815644531 };

    }

    public void  WriteLocation(Location location)

    {

      Console.WriteLine("My Business location resides at latitude: " + location.Latitude + " and longitude: " + location.Longitude + " .");

    }

  }

  // A Creator Abstract Class

  public abstract class LocationFactory

  {

    public abstract ILocationFactory GetPlace(string Place);

  }

  // A 'Concrete Creator' class

  public class ConcreteLocationFactory : LocationFactory

  {

    public override ILocationFactory GetPlace(string Place)

    {

      switch(Place)

      {

        case "Home": //could be an enum that represends Home class

          return new Home();

        case "Business": 

          return new Business();

        default:

          throw new ApplicationException(string.Format("Location '{0}' cannot be created", Place));

      }

    }

  }

public class Program

  {

    public static void Main(string[] args)

    {

      LocationFactory factory = new ConcreteLocationFactory();

      ILocationFactory home = factory.GetPlace("Home");

      Location locationOfHome = home.GetLocation();

      home.WriteLocation(locationOfHome);

      ILocationFactory business = factory.GetPlace("Business");

      Location locationOfBusiness = business.GetLocation();

      business.WriteLocation(locationOfBusiness);

    }

  }

} // namespace

​

​