IsPalindrome.cs

using System;
using System.Linq;
using static System.Text.Encoding;

public static class Program {
    public static void Main() 
    {
        var result = IsPalindrome("racecar");
    }
    
    public static bool IsPalindrome(string name)
    {
        var half = name.Length / 2;
        var bytes = ASCII.GetBytes(name);
        return bytes.Take(half).SequenceEqual(bytes.Reverse().Take(half));
    }
}