In our program, we want to copy a object fully, and the object is nested, so when we design the class can using the copy constructor, there is a sample, you can run the code with CLR:
using System;
using System.Collections;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Web;
using System.Web.SessionState;
using System.Web.UI;
using System.Web.UI.WebControls;
using System.Web.UI.HtmlControls;namespace WebApplicationTest
{
/// <summary>
/// Summary description for TestDeepCopy.
/// </summary>
public class TestDeepCopy: System.Web.UI.Page
{
private void Page_Load(object sender, System.EventArgs e)
{
ClassLevel1 objClassLevel1 = new ClassLevel1();
objClassLevel1.objClassLevel2 = new ClassLevel2();
objClassLevel1.objClassLevel2.objClassLevel3 = new ClassLevel3();
objClassLevel1.objClassLevel2.strClassLevel2 = "I am a string in level2 class";
// using the instance of the ClassLevel1 to call
// the copy constructor of ClassLevel1 class
ClassLevel1 copyObjClassLevel1 = new ClassLevel1(objClassLevel1);
Response.Write(copyObjClassLevel1.objClassLevel2.strClassLevel2);
}#region Web Form Designer generated code
override protected void OnInit(EventArgs e)
{
//
// CODEGEN: This call is required by the ASP.NET Web Form Designer.
//
InitializeComponent();
base.OnInit(e);
}/// <summary>
/// Required method for Designer support - do not modify
/// the contents of this method with the code editor.
/// </summary>
private void InitializeComponent()
{
this.Load += new System.EventHandler(this.Page_Load);
}
#endregion
}public class ClassLevel3
{
// Member variable
public string strClassLevel3;
// Copy constructor
public ClassLevel3(ClassLevel3 objClassLevel3)
{
this.strClassLevel3 = objClassLevel3.strClassLevel3;
}
// Default constructor
public ClassLevel3(){}
}public class ClassLevel2
{
// Member variable
public string strClassLevel2;
public ClassLevel3 objClassLevel3;
// Copy constructor
public ClassLevel2(ClassLevel2 ojbClassLevel2)
{
this.strClassLevel2 = ojbClassLevel2.strClassLevel2;
this.objClassLevel3 = new ClassLevel3(ojbClassLevel2.objClassLevel3);
}
// Default constrcutor
public ClassLevel2(){}
}public class ClassLevel1
{
// Member variable
public string strClassLevel1;
public ClassLevel2 objClassLevel2;
// Copy constructor
public ClassLevel1(ClassLevel1 ojbClassLevel1)
{
this.strClassLevel1 = ojbClassLevel1.strClassLevel1;
//Call the Copy constructor of ClassLevel2
this.objClassLevel2 = new ClassLevel2(ojbClassLevel1.objClassLevel2);
}
// Default constructor
public ClassLevel1(){}
}
}