How to Create Clone of Object in C#

using System.IO;
using System;
class ObjectClone
{
   static void Main(string[] args)
   {
      int[] rollnumbers = {100, 200};
      int[] numbers = (int[])rollnumbers.Clone();
      numbers[0] = 300;
      Console.WriteLine("Roll Number {0}", rollnumbers[0]);
      Console.WriteLine("Clone Number {0}", numbers[0]);//Clone
   }
}