C#图解教程（第四版）Chapter12数组_Clone 方法P234

using System;

namespace Chapter12_1212_CloneMethod
{
    class Program
    {
        static void Main(string[] args)
        {
            // 下面演示克隆值类型数组
            int[] arr1 = { 1,2,3};
            Console.WriteLine("the arr1 is:");
            foreach (int tempi in arr1)
            {
                Console.WriteLine("{0}", tempi);
            }
            int[] arr2 = (int[])arr1.Clone();
            Console.WriteLine("After call Clone,you get an other array");
            foreach (int tempi in arr2)
            {
                Console.WriteLine("{0}", tempi);
            }

            arr2[0] = 100;
            arr2[1] = 200;
            arr2[2] = 300;
            Console.WriteLine("After assign value the arr2 is:");
            foreach (int tempi in arr2)
            {
                Console.WriteLine("{0}", tempi);
            }
            //下面演示克隆引用性数组
            A[] A_arr1 = new A[3] { new A(), new A(), new A() };
            A[] A_arr2 = (A[])A_arr1.Clone();//你得到了另外一个数组，它的指向和A_arr1是一样的
            Console.WriteLine("address of A_arr1 is:{0}",A_arr1);
            Console.WriteLine("address of A_arr2 is:{0}",A_arr2);
            //未修改之前，两个数组是这样的
            Console.WriteLine("A_arr1 's value is:{0}",A_arr1[0].Value);
            Console.WriteLine("A_arr1 's value is:{0}",A_arr1[1].Value);
            Console.WriteLine("A_arr1 's value is:{0}", A_arr1[2].Value);
            Console.WriteLine("A_arr2 's value is:{0}",A_arr2[0].Value);
            Console.WriteLine("A_arr2 's value is:{0}", A_arr2[1].Value);
            Console.WriteLine("A_arr2 's value is:{0}", A_arr2[2].Value);
            //修改A_arr2 ,A_arr1也会变
            A_arr2[0].Value = 100;
            A_arr2[1].Value = 200;
            A_arr2[2].Value = 300;
            Console.WriteLine("After Change value:");
            Console.WriteLine("A_arr1 's value is:{0}", A_arr1[0].Value);
            Console.WriteLine("A_arr1 's value is:{0}", A_arr1[1].Value);
            Console.WriteLine("A_arr1 's value is:{0}", A_arr1[2].Value);
            Console.WriteLine("A_arr2 's value is:{0}", A_arr2[0].Value);
            Console.WriteLine("A_arr2 's value is:{0}", A_arr2[1].Value);
            Console.WriteLine("A_arr2 's value is:{0}", A_arr2[2].Value);



        }
        class A
        {
            public int Value = 5;
        }
    }
}