Object之MemberwiseClone方法

示例:

using System;
using System.Collections.Generic;
using System.Configuration;
using System.Data;
using System.Linq;
using System.Web;
using System.Web.Security;
using System.Web.UI;
using System.Web.UI.HtmlControls;
using System.Web.UI.WebControls;
using System.Web.UI.WebControls.WebParts;
using System.Xml.Linq;
using System.Text.RegularExpressions;
using System.Web.Profile;

namespace WebApplication1
{
    public partial class _Default : System.Web.UI.Page
    {
        protected void Page_Load(object sender, EventArgs e)
        {
            Employee em1 = new Employee(5678);
            Employee em2 = (Employee)em1.Clone();
            em1.First = "san";
            em2.Last = "zhang";
            Response.Write("HC:"+em1.GetHashCode());
            Response.Write("<br/>");
            Response.Write(em1.EmplID+":"+em1.FullName);
            Response.Write("<br/>");
            Response.Write("HC:"+em2.GetHashCode());
            Response.Write("<br/>");
            Response.Write(em2.EmplID+":"+em2.FullName);
            Response.Write("<br/>");
        }

        public class Employee : ICloneable
        {
            public Employee(int id)
            {
                if ((id < 1000) || (id > 9999))
                {
                    throw new Exception(
                        "Invalid Employee ID");
                }

                propID = id;
            }

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


            private readonly int propID;
            public int EmplID
            {
                get
                {
                    return propID;
                }
            }

            public override string ToString()
            {
                return FullName;
            }

            public class Name
            {
                string firstName;

                public string FirstName
                {
                    get { return firstName; }
                    set { firstName = value; }
                }
                string lastName;

                public string LastName
                {
                    get { return lastName; }
                    set { lastName = value; }
                }

            }

            Name empName = new Name();

         

            public string First
            {
                get
                {
                    return empName.FirstName;
                }

                set
                {
                    empName.FirstName = value;
                }
            }

            public string Last
            {
                get
                {
                    return empName.LastName;
                }

                set
                {
                    empName.LastName = value;
                }
            }

            public string FullName
            {
                get { return First + Last; }
            }

        }

    }

}