Palindromo C# ,Palindrome C#

using System;

class tarea
{
    static void Main(string[] args)
    {
   

        Console.ForegroundColor = ConsoleColor.Red;

        Console.BackgroundColor = ConsoleColor.White;

        Console.Clear();



    string str=string .Empty ;

    Console.WriteLine();
    Console.WriteLine();
Console.WriteLine("_____________! INTRODUCE UNA PALABRA !________________   ");
Console.WriteLine();
Console.WriteLine();

string s = Console.ReadLine();

int i = s.Length;

       
for (int j=i -1; j >= 0; j--)
{
str = str + s[j ];
}
if (str == s)
{


Console.WriteLine(s + " es palindrome");


}

else

{

Console.WriteLine(s + " no es palindrome"); }

Console.WriteLine(str);

Console.Read();


}
}