Directionary字典键值对查找

using System;
using System.Collections.Generic;

class test
{
    static void Main()
    {
        Dictionary dic = new Dictionary();
        dic.Add("zhangsan", 1101);
        dic.Add("lisi", 1102);
        dic.Add("wangwu", 1103);
        dic.Add("zhaoliu", 1104);

        foreach (string str1 in dic.Keys)
        {
            if (dic[str1].Equals(1103))
            {
                Console.WriteLine("恭喜你！，找到了，1103对应的姓名是{0}", str1);
            }
        }

        foreach (string str in dic.Keys)
        {
             Console.WriteLine("对应的姓名是{0}:{1}",str, dic[str]);
        }

    }

  
1、以键找值直接Value=dic[str]

2、以值找键则可以foreach(string str in dic.Keys)

                              {  

                   if(dic[str].Equal(Value);)
                       {     Console.WriteLine(str);   }

                              }