namespace BeerHouse
{

    public class DAL
    {
        public List<BLL.Person> LoadData()
        {
            List<BLL.Person> NewPersonList = new List<BLL.Person>();

            // пока заглушка
            BLL.Person Person1 = new BLL.Person();
            BLL.Person Person2 = new BLL.Person();

            Person1.ModifyName("Name1", "LName1");
            Person2.ModifyName("Name2", "LName2");

            NewPersonList.Add(Person1);
            NewPersonList.Add(Person2);

            return NewPersonList;

        }
    }
}

namespace BeerHouse
{


    public class BLL
    {

        public List<Person> Persons = new List<Person>();
        public BLL()
        {
            // CALL LOAD FUNCTION FROM DAL
            DAL NewDAL = new DAL();
            Persons = NewDAL.LoadData();

        }
       

        public class Person
        {

            private string _FirstName;
            private string _LastName;

            public string GetName()
            {
                return _FirstName + _LastName;
            }

            public void ModifyName(string NewFirstName, string NewLastName)
            {
                _FirstName = NewFirstName;
                _LastName = NewLastName;
            }

        }

    }
}