Compare two char[] arrays in C#

Question

I have the following C# code:

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

namespace ConsoleApplication1
{
    class Program
    {
        static void Main(string[] args)
        {
            char[] st = "stackoverflow".ToCharArray();
            char[] ca = { 's', 't', 'a', 'c', 'k' };
            if (st.Take(5) == ca)
            {
                Console.WriteLine("Success");
            }
            else
            {
                Console.WriteLine("Failure");
            }
        }
    }
}

It's intended to write "Success" to the console but it always prints "Failure". Any help would be really appreciated.

Answer 1

== only compares the references of the two arrays, not their items, and since the two arrays have two different references, your comparison will always return false .

You have to compare the elements of one array to the elements of the other. You can use SequenceEqual to accomplish this.

if (st.Take(5).SequenceEqual(ca))
{
    Console.WriteLine("Success");
}