LinQ转换运算符ToDictionary

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

namespace ToDictionaryDemo
{
    class Program
    {
        public class Game
        {
            public string Opponent { get; set; }
            public string Score { get; set; }
        }
        static void Main(string[] args)
        {
            var spartans = new List<Game>
            {
                new Game{Opponent="UAB",Score="55-18"},
                new Game{Opponent="Bowling Green",Score="55-18"},
                new Game{Opponent="Pittsburgh",Score="55-18"},
                new Game{Opponent="Notre Dame",Score="55-18"}
            };
            //字典是一种键值对的集合，ToDictionary 将一个IEnumerable<T>对象（比如LINQ查询所返回的结果）
            //转换为一个IDictionary<Key,Value>对象。
            IDictionary<string, Game> stats = spartans.ToDictionary(key => key.Opponent);
            Console.WriteLine("Spartans vs. {0} {1}", stats["Notre Dame"].Opponent, stats["Notre Dame"].Score);
            Console.ReadLine();
        }
    }
}