C#學習筆記--ArrayList?List?Dictionary

using System;
using System.Collections.Generic;
using System.Collections;
namespace ShuJu
{
    class Program
    {
        static void Main(string[] args)
        {
            ArrayList list = new ArrayList();
            Dictionary<string, int> dic = new Dictionary<string, int>();
            List<object> list1 = new List<object>();
            list.Add(233);
            list.Add(456);
            list.Add(789);
            list.Reverse();//將list中的元素順序反轉
            list.RemoveAt(2);//將list中索引所對應的元素刪除
            object[] obj = list.ToArray();//轉化爲數組
            foreach(object o in obj)
            {
                Console.WriteLine(o.ToString());
            }
                Console.WriteLine(list.Count);
            dic.Add("age", 24);
            dic.Add("number", 1310000000);
            dic.Add("IDcard", 4100000);
            dic.Remove("age");
            foreach(string key in dic.Keys)
            {
                //遍歷字典中所有的鍵
                int value = dic[key];
                Console.WriteLine(key);
            }
            foreach(int value in dic.Values)
            {
                //遍歷字典中所有的值
                Console.WriteLine(value);
            }
            int d;
            bool b = dic.TryGetValue("age", out d);
            Console.WriteLine(b);

            list1.Add(666);
            list1.Add(555);
            list1.Sort();//從小到大排列
            int bl=list1.IndexOf(555);//返回與之匹配的索引
            Console.WriteLine(bl);
            object[] ob = list1.ToArray();
            foreach( int obb in ob)
            {
                Console.WriteLine(obb);
            }
            Console.ReadLine();
        }
    }
}