palindromic string that retrieve value from the braces

public static bool IsPalindrome(string s)

{
    int iLength, iHalfLen;
    iLength = s.Length - 1;
    iHalfLen = iLength / 2;
    for (int i = 0; i <= iHalfLen; i++)
    {
        if (s.Substring(i, 1) != 
            s.Substring(iLength - i, 1))
        {
            return false;
        }
    }
    return true;
}

static void Main(string[] args)
{
    Console.WriteLine("\nPalindromes?");
    string[] sa = new string[]{
        "level", "minim", "radar", 
        "foobar", "rotor", "banana"};

    foreach (string v in sa)
        Console.WriteLine("{0}\t{1}", 
            v, StringEx.IsPalindrome(v));
}

OUTPUT

Palindromes?
level   True
minim   True
radar   True
foobar  False
rotor   True
banana  False