项目中，经常会遇到要创建一个对象的副本作为临时变量或其它用途，需要new一个新对象出来，

然后把源对象的各个属性赋值给这个新对象，这样，及时改变了新对象的属性，源对象也不会发生改变，即深拷贝。

显然，硬编码地把对象的一个个属性赋值给另外一个对象，不仅繁琐，而且容易出错，对象的类删掉一个属性，

则这个副本需“减掉”这个属性。

以Employee类为例，下面的代码实现了Employee的深拷贝与浅拷贝：

Employee类：

[Serializable]    public class Employee:ICloneable    {        public string IDCode  { get; set; }        public int Age  { get; set; }        //注意Department类要贴上序列化的的标记[Serializable]，        //因为Employee要被序列化，其所有属性都要可被序列化        public Department  Department  { get; set; }        /// 
        /// 深拷贝        /// 
        /// 
              public Employee DeepClone()        {            using (Stream objectstream = new MemoryStream())            {                IFormatter formatter = new BinaryFormatter();                formatter.Serialize(objectstream, this);                objectstream.Seek(0, SeekOrigin.Begin);                return formatter.Deserialize(objectstream) as Employee;            }        }        /// 
        /// 浅拷贝        /// 
        /// 
              public Employee ShallowClone()        {            return Clone() as Employee;        }        /// 
        /// 创建当前System.Object的浅表副本        /// 
        /// 
              public object Clone()        {          return  this.MemberwiseClone();        }    }

 

Department类：

[Serializable]    public class Department    {        public string Name { get; set; }           public override string ToString()        {            return this.Name;        }    }

 

Main方法：

static void Main(string[] args)        {            Employee emp1 = new Employee            {                IDCode = "10086",                Age = 23,                Department = new Department { Name = "信息化部" }            };            //浅拷贝            //Employee emp2 = emp1.ShallowClone() as Employee;            //深拷贝            Employee emp2=emp1.DeepClone() as Employee;            //修改emp2,emp1的各个属性不会被修改            emp2.IDCode = "10087";            emp2.Age = 24;            emp2.Department.Name= "研发部";            //输出验证            Console.WriteLine("编号：{0}，部门：{1},年龄:{2}",emp1.IDCode,emp1.Department,emp1.Age);            Console.WriteLine("编号：{0}，部门：{1},年龄:{2}", emp2.IDCode, emp2.Department, emp2.Age);            Console.ReadKey();        }

 

运行截图：

 

总结：emp2为emp1深拷贝的副本，修改emp2的属性，emp1的属性不会改变。