ClassConstraintDemo.cs

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;

namespace Theory8
{
    class Employee
    {
        private string _empName;
        private int _empID;

        public Employee(string name, int num)
        {
            _empID = num;
            _empName = name;
        }

        public string Name
        {
            get { return _empName; }
        }
        public int Id { get { return _empID; } }
    }


    class GenericList<T> where T: Employee
    {
         T[] _name = new T[3];
        private int _counter = 0;
        public void Add(T val)
        {
            _name[_counter] = val;
            _counter++;
        }

        public void Display()
        {
            for (int i = 0; i < _counter; i++)
            {
                Console.WriteLine(_name[i].Name + ", " + _name[i].Id);
            }
        }
    }
    class ClassConstraintDemo
    {
        static void Main(string[] args)
        {
            GenericList<Employee> objList = new GenericList<Employee>();
            objList.Add(new Employee("John",100));
            objList.Add(new Employee("James", 200));
            objList.Add(new Employee("Patrich", 300));
           
            objList.Display();
        }
    }
}