C#复制和深度复制的实现方法

 class Program  {    [Serializable]    public class Car     {      public string name;      public Car(string name)      {        this.name = name;      }    }    [Serializable]    public class Person:ICloneable    {      public int id;      public string name;      public Car car;      public Person()      {      }      public Person(int id, string name, Car car)      {        this.id = id;        this.name = name;        this.car = car;      }      public Object Clone() //实现ICloneable接口，达到浅表复制。浅表复制与深度复制无直接有关系。 对外提供一个创建自身的浅表副本的能力      {        return this.MemberwiseClone();      }    }    //要复制的实例必须可序列化，包括实例引用的其它实例都必须在类定义时加[Serializable]特性。    public static T Copy<T>(T RealObject)    {      using (Stream objectStream = new MemoryStream())      {        //利用 System.Runtime.Serialization序列化与反序列化完成引用对象的复制          IFormatter formatter = new BinaryFormatter();        formatter.Serialize(objectStream, RealObject);        objectStream.Seek(0, SeekOrigin.Begin);        return (T)formatter.Deserialize(objectStream);      }    }         static void Main(string[] args)    {      Person p1 = new Person(1, "Scott", new Car("宝马"));      Console.WriteLine("原始值：P1:id={0}----------->name={1}------>car={2}", p1.id, p1.name, p1.car.name);      Person p2 = Copy<Person>(p1); //克隆一个对象      Person p3 = p1.Clone() as Person;//浅表复制      Console.WriteLine("改变P1的值");      p1.id = 2;      p1.name = "Lacy";      p1.car.name = "红旗";      Console.WriteLine("P1:id={0}----------->name={1}------>car={2}", p1.id, p1.name, p1.car.name);      Console.WriteLine("深度复制：P2:id={0}----------->name={1}------>car={2}", p2.id, p2.name, p2.car.name);      Console.WriteLine("浅表复制：P3:id={0}----------->name={1}------>car={2}", p3.id, p3.name, p3.car.name);      Console.ReadKey();    }

List<T> oldList = new List<T>(); oldList.Add(..); List<T> newList = new List<T>(oldList); 

static class Extensions  {      public static IList<T> Clone<T>(this IList<T> listToClone) where T: ICloneable      {          return listToClone.Select(item => (T)item.Clone()).ToList();      }  //<SPAN style="COLOR: #000000">当然前题是List中的对象要实现ICloneable接口</SPAN> } 

public static T Clone<T>(T RealObject) {    using (Stream objectStream = new MemoryStream())    {       //利用 System.Runtime.Serialization序列化与反序列化完成引用对象的复制       IFormatter formatter = new BinaryFormatter();        formatter.Serialize(objectStream, RealObject);        objectStream.Seek(0, SeekOrigin.Begin);        return (T)formatter.Deserialize(objectStream);    } } 

public static T Clone<T>(T RealObject) {       using(Stream stream=new MemoryStream())      {        XmlSerializer serializer = new XmlSerializer(typeof(T));        serializer.Serialize(stream, RealObject);        stream.Seek(0, SeekOrigin.Begin);        return (T)serializer.Deserialize(stream);      }}