What is cloning and how we inpmement it in asp.net

As we know cloning is done on Objects. If we need a copy of the object to do some changes to the existing state we use cloning.
It is performed mainly on array, collections or even in database.
Cloning is of 2 types:
1. Deep Copy
2. Shallow Copy
Shallow Clone
It makes a copy of object. If field is a value type then bit-bit copy of field is performed. If the field is referenc e type then only reference is copied.
System.Object is the namespace which contains a method MemberwiseClone() which can be used to implement Shallow cloning.
Deep Copy
It makes a copy of an object and also any references to the objects being maintained by the object. If the field is a reference type, it copies actual object to a new memory on managed heap.
*Any class that implements Icloneable interface supports cloning.

namespace CloningDemo
{
    class Company
    {
        string companyname;
        public Company(string companyname)
        {
            this.companyname = companyname;
        }
        public string CompanyName       //property
        {
            get
            {
                return this.companyname;
            }
            set
            {
                this.companyname = value;
            }
        }
    }
    class Emp : ICloneable 
    {
       //Clone the object, and returning a reference to a cloned object.

        public int empid;
        public Company c;
        public Emp(int empid, Company c)
        {
            this.empid = empid;
            this.c = new Company(c.CompanyName);
        }
        public void Show()
        {
            Console.WriteLine("Emp id is " + this.empid);
            Console.WriteLine("Company name is " + this.c.CompanyName);
        }

        public object Clone()
        {
            //return this.MemberwiseClone();        //for shallow cloning

            //for deep cloning
            Emp e = new Emp(this.empid, new Company(this.c.CompanyName));
            return e;
        }

    }
    class Program
    {
        static void Main(string[] args)
        {
            Emp e1 = new Emp(1, new Company("SEED"));
            Console.WriteLine("Details of e1:");
            e1.Show();

            Console.WriteLine();

            Emp e2 = (Emp)e1.Clone();
            Console.WriteLine("Details of e2 after cloning:");
            e2.Show();

            Console.WriteLine();

            //change empid & companyname of e2
            e2.empid = 999;
            e2.c.CompanyName = "XYZ";
            Console.WriteLine("Details of e1 after changing companyname of e2:");
            e1.Show();
            Console.ReadLine();
        }
    }
}