using System;
using System.Collections.Generic;
using System.Text;
using System.Collections;
namespace Study
{
   class Program
   {
      static void Main(string[] args)
      {
         ScoreIndex s = new ScoreIndex();
         s["张三", 1] = 90;
         s["张三", 2] = 100;
         s["张三", 3] = 80;
         s["李四", 1] = 60;
         s["李四", 2] = 70;
         s["李四", 3] = 50;
         Console.WriteLine("张三课程编号为1的成绩为：" + s["张三",1]);
         Console.WriteLine("张三的所有成绩为：");
         ArrayList temp;
         temp = s["张三"];
         foreach (IndexClass b in temp)
         {
            Console.WriteLine("姓名：" + b.Name + "课程编号：" + b.CourseID + "分数：" + b.Score);
         }
         Console.ReadKey();
      }
   }
   class IndexClass
   {
      private string _name;
      private int _courseid;
      private int _score;
      public IndexClass(string _name, int _courseid, int _score)
      {
         this._name = _name;
         this._courseid = _courseid;
         this._score = _score;
      }
      public string Name
      {
         get { return _name; }
         set { this._name = value; }
      }
      public int CourseID
      {
         get { return _courseid; }
         set { this._courseid = value; }
      }
      public int Score
      {
         get { return _score; }
         set { this._score = value; }
      }
   }
   class ScoreIndex
   {
      private ArrayList arr;
      public ScoreIndex()
      {
         arr = new ArrayList();
      }
      public int this[string _name, int _courseid]
      {
         get
         {
            foreach (IndexClass a in arr)
            {
               if (a.Name == _name && a.CourseID == _courseid)
               {
                  return a.Score;
               }
            }
            return -1;
         }
         set
         {
            arr.Add(new IndexClass(_name, _courseid, value)); //arr["张三",1]=90
         }
      }
      //重载索引器
      public ArrayList this[string _name]
      {
         get
         {
            ArrayList temp = new ArrayList();
            foreach (IndexClass b in arr)
            {
               if (b.Name == _name)
               {
                  temp.Add(b);
               }
            }
            return temp;
         }
      }
   }
}