var res1 = arr1.SequenceEqual(arr2);

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

namespace ConsoleApp1
{
    class Programme2
    {
        static void Main(string[] args)
        {
//create array1,array2,array3 and array4 string array
            string[] array1 = { "welcome", "to", "tutlane", "com" };
            string[] array2 = { "welcome", "TO", "Noida", "com" };
            string[] array3 = { "welcome", "to", "noida" };
            string[] array4 = { "WELCOME", "TO", "NOIDA" };
//Sequence.Equal() method is used to check if both te sequences are equal or not
            var res1 = array1.SequenceEqual(array2);
            var res2 = array1.SequenceEqual(array2, StringComparer.OrdinalIgnoreCase);
            var res3 = array1.SequenceEqual(array3);
            var res4 = array3.SequenceEqual(array4, StringComparer.OrdinalIgnoreCase);
            Console.WriteLine("Result1: {0}", res1);
            Console.WriteLine("Result2: {0}", res2);
            Console.WriteLine("Result3: {0}", res3);
            Console.WriteLine("Result4: {0}", res4);
            Console.ReadLine();
        }
    }
}