using System.Collections.Generic;//引用命名空间//Dictionary可以理解为散列集合

 public class DictionaryTest

 {

          public static void Main()

          {

                //1.初始化

                Dictionary<string, string> dicA = new Dictionary<string, string>();

                //2.添加元素 key，value->学号，姓名

                dicA.Add("A01", "张三");

                dicA.Add("A02", "李四");

                dicA.Add("B03", "王五");

                dicA.Add("A03", "毛毛");

                dicA.Add("B02", "张三");

                //3.通过key删除元素

                dicA.Remove("A03");

                //4.修改值

                dicA("A02")="新值";

                //5.假如不存在元素则加入元素

                if (! dicA.ContainsKey("A08"))

                    dicA.Add("A08", "哈哈");

                //6.获取元素个数

                int count= dicA.Count;

                //7.遍历集合

                foreach (KeyValuePair<string, string> kvp in dicA)

                {

                       Console.WriteLine("学号：{0},姓名：{1}", kvp.Key, kvp.Value);

                }

               //8.遍历键或值的集合

               Dictionary<string, string>.KeyCollection allKeys = dicA.Keys;

               Console.WriteLine("最佳女主角：");

               foreach (string oneKey in allKeys)

               {

                    Console.WriteLine(oneKey);

               }

               //Dictionary<string, string>.ValueCollection allValues = dicA.Values;

               //foreach (string oneValue in allValues)

               //{

               //     Console.WriteLine(oneValue);

               //}

               //9.取值

               string stuName=dicA("A01");

               //10.清空

               dicA.Clear();

        }