C# Looping through array bug (NEWBIE)

Question

I can't figure out why this works if I step through it but when I run it, it will only give me a result such as :

4

4

4

4

4

4

4

4

4

4

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;

namespace ConsoleApplication1
{
    class Program

    {

        public static int diceRoller(int x, int y)
        {
            Random rnd = new Random();
            int result = rnd.Next(x, y+1);
            return result;
        }

        static void Main(string[] args)
        {

            int[] myArray = new int[10];

            for (int i = 0; i < myArray.Length; i++)
            {
                myArray[i] = diceRoller(1, 6);

                Console.WriteLine(myArray[i]);
            }

            Console.ReadKey();

        }
    }
}