ArrayList和Hashtable

public class Tools{
     public string Name{get ;set;}
}

            #region 0.1ArrayList集合
            ////告诉内存,我要存储内容
            //ArrayList list = new ArrayList();
            ////方法  Add方法
            //list.Add("李小龙");
            //list.Add("成龙");
            //list.Add("甄子丹");
            ////0.1打印出每个人的名称
            //foreach (Object item in list)
            //{
            //    Console.WriteLine("姓名为:~~~~~~~~~~~~~~~~~~" + item + "~~~~~~~~~~~~~~~~~");
            //}

            ////0.2单独获取信息
            //Console.WriteLine("单独获取信息:" + list[1]);

            ////0.3删除
            //list.Remove("李小龙");
            //Console.WriteLine("_______________删除后__________________");
            //foreach (Object item in list)
            //{
            //    Console.WriteLine("姓名为:~~~~~~~~~~~~~~~~~~" + item + "~~~~~~~~~~~~~~~~~");
            //}

            ////0.4添加
            //Console.WriteLine("添加");
            //list.Add("李小龙");
            //Console.WriteLine("!!!!!!!!!!!!!!添加!!!!!!!!!!!!!!!!!!!!!");
            //foreach (Object item in list)
            //{
            //    Console.WriteLine("姓名为:~~~~~~~~~~~~~~~~~~" + item + "~~~~~~~~~~~~~~~~~");
            //}

            ////0.5添加      Add向后追加
            //Console.WriteLine("向后追加");
            //list.Insert(1, "李谦");
            //Console.WriteLine("!!!!!!!!!!!!!!向后追加!!!!!!!!!!!!!!!!!!!!!");
            //foreach (Object item in list)
            //{
            //    Console.WriteLine("姓名为:~~~~~~~~~~~~~~~~~~" + item + "~~~~~~~~~~~~~~~~~");
            //}

            ////0.6判断李小龙是否在名称为list中
            //bool flag = list.Contains("李小龙");
            //Console.WriteLine(flag);

            ////修改     "李谦"  为  "刘谦"
            ////数组中元素个数用XX.Length  集合元素用XX.count
            //for (int i = 0; i < list.Count; i++)
            //{
            //    if (list.Contains("李谦"))
            //    {
            //        //存在  就修改
            //        if (list[i].Equals("李谦"))
            //        {
            //            list[i] = "刘谦";
            //            break;

            //        }
            //    }
            //    else
            //    {
            //        Console.WriteLine("没有该人,如何修改!!");
            //    }
            //}
            //Console.WriteLine("!!!!!!!!!!!!!!修改后!!!!!!!!!!!!!!!!!!!!!");
            //foreach (Object item in list)
            //{
            //    Console.WriteLine("姓名为:~~~~~~~~~~~~~~~~~~" + item + "~~~~~~~~~~~~~~~~~");
            //}

            //方法二

           // //ArrayList list = new ArrayList();
           // Tools p1 = new Tools();
           // p1.Name = "六道神君";
           // Tools p2 = new Tools(); ;
           // p2.Name = "天使神茫";
           // Tools p3 = new Tools();
           // p3.Name = "魔君";

           // list.Add(p1);
           // list.Add(p2);
           // list.Add(p3);

           // Tools p4 = new Tools();
           // p4.Name = "邪神";
           // // list.Add(p4);    //按顺序排列
           // list.Insert(0, p4);//下标定到0

           // //遍历集合中所有的元素
           // foreach (Tools person in list)
           // {
           //     Console.WriteLine(person.Name);
           // }
           // Console.WriteLine("-------------------------------删除后--------------------------");

           //// 判断所
           // if (list.Contains(p4))
           // {
           //     list.RemoveAt(0);//下标
           //  // list.Remove(p4);//实际存在
           // }
           // else
           // {
           //     Console.WriteLine("-------------数据不存在-----------");
           // }

           // foreach (Tools person in list)
           // {
           //     Console.WriteLine(person.Name);
           // }

             Hashtable table=new Hashtable();
              Person p1=new Person();
            p1.Name = "李连杰";
            Person p2 = new Person();
            p2.Name = "巩俐";

            Person p3 = new Person();
            p3.Name = "张靓颖";
            table.Add("", p1);
            table.Add("", p2);
            table.Add("", p3);
            //遍历HashTable三种方案
            /*
             * 无论是java还是C#，引用类型对象都会自动调用它的ToString()
                ToString()命名空间.类名
             */
            //方式一：通过key获取key和value
            foreach (string key in table.Keys)
            {
                //通过key获取value
                Console.WriteLine("key是{0}\tvalue是{1}", key, ((Person) table[key]).Name);
            }
            Console.WriteLine("===========================");
            //方式二：只获取value
            foreach (Object value in table.Values)
            {
                Console.WriteLine(((Person)value).Name);
            }
            Console.WriteLine("===================================");
            //方式三：key和value同时遍历  key+value
            foreach (DictionaryEntry item in table)
            {
                Console.WriteLine("key是{0}\tvalue是{1}",item.Key,((Person)item.Value).Name);
            }
            //删除 Remove()
           // table.Remove("001");
            //修改 咱们修改“002” key对应value值得name属性为“大美丽”
            //先判断 是否存在某个key
            if (table.ContainsKey("")) //存在该key
            {
                Person p = (Person) table[""];
                p.Name = "大美丽";
            }
            Console.WriteLine("==========修改后==========");
            //方式三：key和value同时遍历  key+value
            foreach (DictionaryEntry item in table)
            {
                Console.WriteLine("key是{0}\tvalue是{1}", item.Key, ((Person)item.Value).Name);
            }

            //Console.WriteLine("==========删除后==========");
            ////方式三：key和value同时遍历  key+value
            //foreach (DictionaryEntry item in table)
            //{
            //    Console.WriteLine("key是{0}\tvalue是{1}", item.Key, ((Person)item.Value).Name);
            //}

            Console.ReadLine();
            #endregion