浅谈.net平台下深拷贝和浅拷贝

class Program
    {
        static void Main(string[] args)
        {
            Student s1 = new Student("li", 23);

            //浅拷贝
            Student s2 = s1;
            s2.Age = 27;
            s1.ShowInfo();//li's age is 27

            //深拷贝
            int i = 12;
            int j = i;
            j = 22;
            Console.WriteLine(i);//12

            Console.Read();
        }
    }

    class Student
    {
        public string Name;
        public int Age;

        public Student(string name, int age)
        {
            Name = name;
            Age = age;
        }

        public void ShowInfo()
        {
            Console.WriteLine("{0}'s age is {1}", Name, Age);
        }
    }

public object Clone()
{
return this.MemberwiseClone();
}

class Program
    {
        static void Main(string[] args)
        {
            ClassA ca = new ClassA();
            ca.value = 88;
            ClassA ca2 = new ClassA();
            ca2 = (ClassA)ca.Clone();
            ca2.value = 99;
            Console.WriteLine(ca.value + "-----" + ca2.value);//88---99

            ClassB cb = new ClassB();
            cb.Member.value = 13;

            ClassB cb2 = (ClassB)cb.Clone();
            cb2.Member.value = 7;
            Console.WriteLine(cb.Member.value.ToString() + "------" + cb2.Member.value.ToString());//浅拷贝：7---7      深拷贝：13----7          

            Console.Read();
        }
    }

    public class ClassA : ICloneable
    {
        public int value = 0;

        public object Clone()
        {
            return this.MemberwiseClone();
        }
    }

    public class ClassB : ICloneable
    {
        public ClassA Member = new ClassA();

        public object Clone()
        {
            //浅拷贝
            return this.MemberwiseClone();

            //深拷贝
            ClassB obj = new ClassB();
            obj.Member = (ClassA)Member.Clone();
            return obj;
        }
    }

public class Sex:ICloneable
    {
        private string _PSex;
        public string PSex
        {
            set{ _PSex = value;}
            get { return _PSex; }
        }

        //public object Clone()
        //{
        //    return this.MemberwiseClone();
        //}
    }

    public class Person : ICloneable
    {

        private Sex sex = new Sex();
        public int aa = 3;

        public string pSex
        {
            set { sex.PSex = value; }
            get { return sex.PSex; }
        }
        private string _PName;
        public string PName
        {
            set { this._PName = value; }
            get { return this._PName; }
        }

        public void ShowPersonInfo()
        {
            Console.WriteLine("-------------------------");
            Console.WriteLine("Name:{0} Sex:{1}", _PName, this.pSex);
            Console.WriteLine("-------------------------");
            Console.WriteLine(this.aa);
        }
        //浅拷贝
        public object Clone()
        {
            return this.MemberwiseClone();
        }
        //深拷贝
        public object DeepClone()
        {
            Person newP = new Person();
            newP.PName = this._PName;
            newP.pSex = this.pSex;
            return newP;
        }
    }

    class Program
    {
        static void Main(string[] args)
        {
            Console.WriteLine("原对象:");
            Person p = new Person();
            p.PName = "Lee";
            p.pSex = "男";

            p.ShowPersonInfo();//原对象：lee 男 3

            //浅拷贝       
            Person copy = (Person)p.Clone();
            //深拷贝
            Person dcopy = (Person)p.DeepClone();

            Console.WriteLine("修改后的原对象:");
            p.PName = "Zhao";
            p.pSex = "女";
            p.aa = 1;
            p.ShowPersonInfo();//zhao 女 1

            Console.WriteLine("修改后的浅拷贝对象：");
            copy.ShowPersonInfo();//lee 女 3

            Console.WriteLine("修改后的深拷贝对象：");
            dcopy.ShowPersonInfo();//lee 男 3

            Console.WriteLine("直接拷贝对象：");
            Person PP = p;
            PP.ShowPersonInfo();//zhao 女 1

            Console.ReadLine();
        }
    }

class Program
    {
        static void Main(string[] args)
        {
            int[] numbers = { 2, 3, 4, 5 };
            int[] numbersCopy = new int[5];
            numbers.CopyTo(numbersCopy, 0);
            numbersCopy[2] = 0;

            int[] numbers1 = { 2, 3, 4, 5 };
            int[] numbersClone1 = (int[])numbers1.Clone();
            numbersClone1[2] = 0;

            Console.Write(numbers[2] + "---" + numbersCopy[2]);//4---0
            Console.Write(numbers1[2] + "---" + numbersClone1[2]);//4--0

            //数组的复制也就是引用传递，指向的是同一个地址
            int[] numbers2 = { 2, 3, 4, 5 };
            int[] numbers2Copy = numbers2;
            numbers2Copy[2] = 0;

            Console.Write(numbers2[2]);//0
            Console.Write(numbers2Copy[2]);//0

            Console.Read();
        }
    }