Clone

What is Clone ?

It look like duplicate of original

Reference is same for string

And different for objects

Once clone create it acts as independent 

class SiteName : Icloneable

    {

        private string SiteDomain { get; }

        private string Protocal { get; }

        public SiteName(SiteName siteName)

        {

            this.Protocal = siteName.Protocal;

            this.SiteDomain = siteName.SiteDomain;

        }

        public SiteName(string SiteName)

        {

            SiteDomain = SiteName.Split('.')[2];

            Protocal = SiteName.Split('/').FirstOrDefault();

        }

        public string showData

        {

            get { return $"Domain={SiteDomain} Protocal={Protocal}"; }

        }

           

        public object Clone()

        {

//Runtime exception : System.StackOverflowException  HResult=0x800703E9

//  Message=Exception of type 'System.StackOverflowException' was thrown.

            //return Clone();

// This will run as expected

            //return this.MemberwiseClone();

//Runtime exception : System.InvalidCastException

//Message=Unable to cast object of type 'System.String' to type 'Clone_Concept.SiteName'.

            //return showData;

            //return this.Clone();

            return MemberwiseClone();

        }

    }

    class Program

    {

        static void Main(string[] args)

        {

            //string clone

            string Site1Name = "http://www.abc.com";

            Console.WriteLine(Site1Name);

           

            string Site2Name = (string)Site1Name.Clone();

            Console.WriteLine(

                $"Reference {object.ReferenceEquals(Site1Name, Site2Name)}" +

                $"\n Is Equal {object.Equals(Site1Name,Site2Name)}");

            Console.WriteLine();

           

            //Object Clone

            SiteName siteNameObj1 = new SiteName(Site1Name);

            Console.WriteLine(siteNameObj1.showData);

           

            SiteName siteNameObj2 = (SiteName)siteNameObj1.Clone();

            Console.WriteLine(

                $"Reference {object.ReferenceEquals(siteNameObj1, siteNameObj2)}" +

                $"\n Is Equal {object.Equals(siteNameObj1, siteNameObj2)}");

            Console.Read();

        }

    }