static void Main(string[] args)
{
Person p1 = new Person();
p1.Id = 123;
Dog jingba = new Dog();
jingba.Name = "北京八爷";
p1.Dog = jingba;
Person p2 = (Person)p1.Clone();
}
public object Clone()
{
Person p = new Person();
p.Id = this.Id;
p.Name = this.Name;
//两个Person对象指向同一个Dog
//这就是浅层拷贝,只拷贝类的第一层成员
//要想实现深层拷贝就去实现Dog类的ICloneable接口
p.Dog = this.Dog;
//return p;
//.NET实现的浅层拷贝快捷方法，仅拷贝成员级别的
//MemberwiseClone()是protected方法，仅在类内部调用
return this.MemberwiseClone();
}