Check if a string is Palindrome in CSharp

using System;/*from   w w  w  .  j  a v a2  s  . c  o m*/
using System.Text;

public class MainClass {
    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) {
        string[] sa = new string[]{"level", "minim", "radar"};

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