C#_IComparable实例 - 对象ID进行排序

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

namespace ComparableTest
{
    class Program
    {
        class Employee : IComparable<Employee>
        {
            private int empID;

            public Employee(int empID)
            {
                this.empID = empID;
            }

            public override string ToString()
            {
                return empID.ToString();
            }

            public bool Equals(Employee other)
            {
                if (this.empID == other.empID)
                {
                    return true;
                }
                else
                {
                    return false;
                }
            }

            public int CompareTo(Employee rhs)
            {
                return this.empID.CompareTo(rhs.empID);
            }
        }

        static void Main(string[] args)
        {
            List<Employee> le = new List<Employee>();
            Random random = new Random();

            for (int i = 0; i < 5;i++ )
            {
                le.Add(new Employee(random.Next(10)+100));
            }

            for (int i = 0; i<le.Count; i++)
            {
                Console.Write(le[i].ToString()+",");
            }

            Console.WriteLine();
            Console.WriteLine("after sort");

            le.Sort();
            for (int i = 0; i < le.Count; i++)
            {
                Console.Write(le[i].ToString() + ",");
            }

            Console.ReadLine();
        }
    }
}