ArrayList的赋值

   Person p1 = new Person();
            p1.Name = "Tom";
            //Array

            ArrayList arrayList = new ArrayList();
           
            arrayList.Add("hello world");
            arrayList.Add(10);

           

            arrayList.Add(p1);

           
            string[] names = { "YQQ","LXF","ZL"};
            //arrayList.Add(names);
            arrayList.AddRange(names);
           //删除的时候，是判断p2与集合中的那个p1是否为同一个对象，如果是同一个对象就删除，否则不能删除
           

            string s1 = new string(new char[] { 'a', 'b', 'c' });
            string s2 = new string(new char[] { 'a', 'b', 'c' });

            arrayList.Add(s1);
            arrayList.ToArray();
          
            //arrayList.Remove(p2);
            //arrayList.Remove(s2);

            for (int i = 0; i < arrayList.Count; i++)
            {
                // arrayList[i];获取每个元素
            }
            Person p2 =(Person)arrayList[2];

            Console.WriteLine(p2.Name);

                #region MyRegion
            arrayList.Add(10);
            arrayList.Add("HELLO WORLD");
            arrayList.Add(3.45);

            arrayList.Add(10);
            arrayList.Add("HELLO WORLD");
            arrayList.Add(3.45);

            arrayList.Add(10);
            arrayList.Add("HELLO WORLD");
            arrayList.Add(3.45);

            for (int i = 0; i < 9; i++)
            {
                arrayList.RemoveAt(0);
            }

            arrayList.TrimToSize();

            Console.WriteLine(arrayList.Count);//元素实际个数集合中
            Console.WriteLine(arrayList.Capacity);
                #endregion

                Console.ReadKey();