How to do Alphanumeric Sorting in list

You might write you own comparer (see MSDN: "List<t>.Sort Method (Comparison<t>)"[^]. In its implementation you have to first split the strings into their alphabetic and numeric parts (handling the corner cases, like "0") and then evaluate the respective order based first on the alphabetic and then on the numeric parts.

Thanks Everyone...
Its working nicely..

static void Main()
{
    string[] highways = new string[] { "B1", "B2", "b3", "0", "B3", "B10", "B20", "B90", "B9", "B21", "GB1", "GB11" };
    Array.Sort(highways, new AlphanumComparatorFast());

    foreach (string item in highways)
    {
        Console.WriteLine(item);
    }

    Console.ReadLine();
}

public class AlphanumComparatorFast : System.Collections.IComparer
    {
        public int Compare(object x, object y)
        {
            string s1 = x as string;
            if (s1 == null)
            {
                return 0;
            }
            string s2 = y as string;
            if (s2 == null)
            {
                return 0;
            }

            int len1 = s1.Length;
            int len2 = s2.Length;
            int marker1 = 0;
            int marker2 = 0;

            while (marker1 < len1 && marker2 < len2)
            {
                char ch1 = s1[marker1];
                char ch2 = s2[marker2];

                char[] space1 = new char[len1];
                int loc1 = 0;
                char[] space2 = new char[len2];
                int loc2 = 0;

                do
                {
                    space1[loc1++] = ch1;
                    marker1++;

                    if (marker1 < len1)
                    {
                        ch1 = s1[marker1];
                    }
                    else
                    {
                        break;
                    }
                } while (char.IsDigit(ch1) == char.IsDigit(space1[0]));

                do
                {
                    space2[loc2++] = ch2;
                    marker2++;

                    if (marker2 < len2)
                    {
                        ch2 = s2[marker2];
                    }
                    else
                    {
                        break;
                    }
                } while (char.IsDigit(ch2) == char.IsDigit(space2[0]));

                string str1 = new string(space1);
                string str2 = new string(space2);

                int result;

                if (char.IsDigit(space1[0]) && char.IsDigit(space2[0]))
                {
                    int thisNumericChunk = int.Parse(str1);
                    int thatNumericChunk = int.Parse(str2);
                    result = thisNumericChunk.CompareTo(thatNumericChunk);
                }
                else
                {
                    result = str1.CompareTo(str2);
                }

                if (result != 0)
                {
                    return result;
                }
            }
            return len1 - len2;
        }
    }