using System;

using System.Collections.Generic;

using System.Linq;

using System.Text;

using System.Threading.Tasks;

​

namespace tm4h1

{

    class Program

    {

        static void Main(string[] args)

        {

            Employee e = new Employee();

            int n;

            do

            {

                Console.WriteLine("1.ADD");

                Console.WriteLine("2.DELETE");

                Console.WriteLine("3.SEARCH");

                Console.WriteLine("4.DISPLAY");

                Console.WriteLine("5.Exit");

                Console.WriteLine("Enter Your Choice");

                n = Int32.Parse(Console.ReadLine());

                switch(n)

                {

                    case 1:int id = Int32.Parse(Console.ReadLine());

                           String Name = Console.ReadLine();

                            double sal = Double.Parse(Console.ReadLine());

                            Employee e1 = new Employee()

                            {

                            EmployeeID = id,

                            EmployeeName = Name,

                            Salary = sal

                            };

                            Console.WriteLine(e.AddEmployee(e1));

                           break;

                    case 2:int id1 = Int32.Parse(Console.ReadLine());

                        Console.WriteLine(e.DeleteEmployee(id1));

                            break;

                    case 3:break;

                    case 4:e.Display();

                        break;

                    case 5: return;

                }

            } while (n != 0);

        }

    }

    public class Employee

    {

        public String EmployeeName

        {

            get;set;

        }

        public int EmployeeID

        {

            get;set;

        }

        public double Salary

        {

            get;set;   

        }

        List<Employee> Emp = new List<Employee>();

        public bool AddEmployee(Employee e)

        {

            Emp.Add(e);

            if(Emp.Contains(e))

            {

                return true;

            }

            else

            {

                return false;

            }

​

        }

        public bool DeleteEmployee(int id)

        {

            if(Emp.Remove(Emp.Find(emp => emp.EmployeeID == id)))

            {

                return true;

            }

            else

            {

                return false;

            }

        }

        public String SearchEmployee(int id)

        {

            Employee c =Emp.Find(emp => emp.EmployeeID == id);

            return c.EmployeeName;

        }

        public Employee[] GetAllEmployeesist()

        {

            return Emp.ToArray();

        }

        public void Display()

        {

            foreach(Employee e in Emp)

            {

                Console.WriteLine("ID ={0} Name ={1} Salary ={2}", e.EmployeeID, e.EmployeeName, e.Salary);

            }

        }

    }

}

​