C#数组 List、Dictionary 、Arrary、ArrayList

 #region Dictionary  泛型集合，动态修改查询、查询和排序

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

            dic.Add("北京", "1");

            dic.Add("山西", "2");

            dic.Add("深圳", "3");

            if (!dic.ContainsKey("山西"))

            {

                dic.Add("山西", "5");

            }

            foreach (KeyValuePair<string, string> item in dic)

            {

                Console.WriteLine("Key:{0},Value{1}", item.Key, item.Value);

            }

            //排序遍历

            var result = from d in dic orderby d.Key select d;

            foreach (KeyValuePair<string, string> item in result)

            {

                Console.WriteLine("Key:{0},Value{1}", item.Key, item.Value);

            }

            #endregion

Arrary：

  #region Arrary 创建固定长度的数组

            string[] str = { "1", "2", "3" };

                            int[] i = { 1, 2, 3, 4 };

                            //取数

                            string[] arr = new string[3];

                            arr[0] = "山西";

                            arr[1] = "广州";

                            arr[2] = "上海";

                            Console.WriteLine("{0}",arr.Length);

            #endregion

ArrayList:

  #region  ArrayList 允许动态增加,移除元素,排序、反转数组  using System.Collections;

            ArrayList arraylist = new ArrayList();

            arraylist.Add("山西");

            arraylist.Add("北京");

            Console.WriteLine("长度{0}",arraylist.Count);

            arraylist.Remove("北京");

            arraylist.RemoveAt(1);

            //反转

            arraylist.Reverse();

            //排序

            arraylist.Sort();

            foreach (string s in arraylist)

            {

                Console.WriteLine(s);

            }

            //允许创建元素为类实例的泛型数组

            ArrayList arrList = new ArrayList();

            arrList.Add(new Person(1, "1"));

            foreach (Person item in arrList)

            {

                Console.WriteLine("item.Id:{0},item.Name:{1}",item.ID,item.Name);

            }

            #endregion

List:

  #region  List  创建泛型集合，动态增加、排序、反转 using System.Collections.Generic;

            List<Person> lists = new List<Person>();

            lists.Add(new Person(1, "2"));

            foreach (Person item in lists)

            {

                Console.WriteLine("item.Id:{0},item.Name:{1}", item.ID, item.Name);

            }

           #endregion