Timothy

泛型(Generic) 不著重規劃(類別)

泛型(彈性)===>類名型別,Detegate(委派)

Employee 類別

 

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

namespace csmod04
{
  public  class Employee
    {
      //Data Field
        private String _id;

        public String Id
        {
            get { return _id; }
            set { _id = value; }
        }
        private String _name;

        public String Name
        {
            get { return _name; }
            set { _name = value; }
        }
        private DateTime _birthDate;

        public DateTime BirthDate
        {
            get { return _birthDate; }
            set { _birthDate = value; }
        }
        private Decimal _salary;
      //讀取的屬性
        public Decimal Salary
        {
            get { return _salary; }
         
        }
      //建構子
      public Employee() { }
      //建構子overLoading
      public Employee(String _id,String _name,DateTime _birthDate)
      {
          this._id = _id;
          this._name = _name;
          this._birthDate = _birthDate;
          }
    }
}

Salse 類別

 

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

namespace csmod04
{
    //繼承性
    public class Sales:Employee
    {
        //Data Field
        private Decimal _qa;

        public Decimal Qa
        {
            get { return _qa; }
            set { _qa = value; }
        }
        //建構子
        public Sales()
        {
        }
        public Sales(String _id, String _name, DateTime _birthDate):base(_id,_name,_birthDate)
        {
            
        }

    }
}

主程式

 

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
//限制員工類型(其他型不收)
namespace csmod04
{
    class TestEmployeeCol
    {
        public static void Main()
        {
            //泛型
            List<Employee> col = new List<Employee>();
            col.Add(new Employee("0001", "eric", new DateTime(2000, 1, 1)));
            col.Add(new Sales("0002", "bill", new DateTime(2000, 1, 1)));
            col.Add(new Employee("0003", "sam", new DateTime(2000, 1, 1)));
            //逐一參考
            foreach (Employee e in col)
            {
                if (e is Sales)
                {
                    ((Sales)e).Qa = 20000;
                }
            }

        }
    }
}