C# Array Class - Array Class and Functions in C#

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

namespace Array_class
{
    class Program
    {
        static void Main(string[] args)
        {
            // Creating an array  
            int[] arr = new int[6] { 5, 8, 9, 25, 0, 7 };
            // Creating an empty array  
            int[] arr2 = new int[6];
            // Displaying length of array  
            Console.WriteLine("length of first array: " + arr.Length);
            // Sorting array  
            Array.Sort(arr);
            Console.WriteLine("First array elements: ");
            // Displaying sorted array  
            PrintArray(arr);
            // Finding index of an array element  
            Console.WriteLine("\nIndex position of 25 is " + Array.IndexOf(arr, 25));
            // Coping first array to empty array  
            Array.Copy(arr, arr2, arr.Length);
            Console.WriteLine("Second array elements: ");
            // Displaying second array  
            PrintArray(arr2);
            Array.Reverse(arr);
            Console.Write("\nFirst Array elements in reverse order: ");
            PrintArray(arr);
        }
        // User defined method for iterating array elements  
        static void PrintArray(int[] arr)
        {
            foreach (Object elem in arr)
            {
                Console.Write(elem + " ");
                Console.ReadLine();
            }
        }
    }
}