实现工作汇报

 public class SE:Employee
    {
        private int popularity;
        public int Popularity
        {
            get { return popularity; }
            set { popularity = value; }
        }

        public string DoWork()
        {
            StringBuilder sb = new StringBuilder();
            sb.Append(this.Name + ":
");
            for (int i = 0; i < this.workList.Count; i++)
            {
                sb.Append((i + 1) + "、" + workList[i].Name + ":" +
                    workList[i].Description + "
");

            }
            return sb.ToString();
        }
        public SE(string id, string name, int age, Gender gender, int popularity,
            List<Job>list):base(id,name,age,gender,list)
        {
            this.Popularity = popularity;
        }

  public class PM:Employee
    {
       public int YearOfExperience { get; set; }
       public string Dowork()
       {
           string message = this.Name + "：管理员工完成工作内容！";
           return message;
       }
       public PM(string id, string name, int age, Gender gender, int yearOfExperience,
           List<Job> list):base(id,name,age,gender,list)
         
        {
            this.YearOfExperience = YearOfExperience;

public class Job//定义工作项目
    {
        public string Name { get; set; }//工作名称
        public string Description { get; set; }//描述
       //构造函数
        public Job(string name, string description)
        {
            this.Name = name;
            this.Description = description;
        }
    }

 public enum Gender//枚举
    {
      male, female
     
    }

public partial class Form1 : Form
    {
        List<Employee> empls = new List<Employee>();
        public Form1()
        {
            InitializeComponent();
            Init();
        }
        public void Init()
        {
            List<Job> list1 = new List<Job>();
            list1.Add(new Job("编码", "购物车模块"));
            list1.Add(new Job("测试", "给购物车模块做单元测试"));
            SE ai = new SE("112", "艾边成", 25, Gender.male, 100, list1);

            List<Job> list2 = new List<Job>();
            list2.Add(new Job("设计", "数据库建模"));
            list2.Add(new Job("编写文档", "详细设计说明书"));
            SE job = new SE("113", "Joe", 24,Gender.female, 200, list2);

            PM pm = new PM("890", "比尔", 50, Gender.female, 30, null);
            empls.Add(ai);
            empls.Add(job);
            empls.Add(pm);


        }

 private void button1_Click(object sender, EventArgs e)
        {
            foreach (Employee emp in empls)
            {
                if (emp is PM)
                {
                    MessageBox.Show(((PM)emp).Dowork(), "汇报");

                }
                if (emp is SE)
                {
                    MessageBox.Show(((SE)emp).DoWork(), "汇报");
                }
            }
        }

public  class Employee
    {
        public int Age { get; set; }
        public Gender  Sex { get; set; }
        public string ID { get; set; }
        public string Name { get; set; }
       //给Employee添加工作列表属性
        protected List<Job> workList { get; set; }
       //构造
        public Employee(string id, string name, int age, Gender gender, List<Job> list)
        {
            this.Age = age;
            this.ID = id;
            this.Name = name;
            this.Sex = gender;
            this.workList = list;

        }