using System;

using System.Collections.Generic;

using System.Collections;

using System.Linq;

public class Employee{

   public delegate bool PromoteDelegate(Employee emp);

   public static PromoteDelegate PromoteDelegateObj = null;

   public int ID {get;set;}

   public string Name {get;set;}

   public double Salary {get;set;}

   public double Experience {get;set;}

   public static void PromoteEmployee(List<Employee> employees){

      if(PromoteDelegateObj==null) throw new Exception("PromoteDelegate Should not be null");

       foreach(var emp in employees){

           if(PromoteDelegateObj(emp)){ 

               Console.WriteLine(emp.Name);

           }

       }

   }

}

public class Program

{

    public static void Main()

    {

        var employees = new List<Employee>(); 

        employees.Add(new Employee(){ID=1,Name="shihab",Salary=35000,Experience=2.9});

        employees.Add(new Employee(){ID=2,Name="Arun",Salary=25000,Experience=2.1});

        employees.Add(new Employee(){ID=3,Name="Kiran",Salary=30000,Experience=2.9});

        //Employee.PromoteDelegateObj = IsEligibleToPromote;

        // Anonymous Method

        Employee.PromoteDelegateObj = delegate(Employee emp){

            if(emp.Experience>2.5) return true;

            return false;

        };

        // Lambda Expression

        //Employee.PromoteDelegateObj = (emp) => { if(emp.Experience>2.5) return true;return false;};

        Employee.PromoteEmployee(employees);

    }

    public static bool IsEligibleToPromote(Employee emp){

      if(emp.Experience>2.5) { return true; }

       return false;

    }

}