InvariantComparer.cs

using System.Collections;
using System.Globalization;

namespace System
{
    [Serializable]
    internal class InvariantComparer : IComparer
    {
        private CompareInfo m_compareInfo;

        internal static readonly System.InvariantComparer Default = new System.InvariantComparer();

        internal InvariantComparer()
        {
            m_compareInfo = CultureInfo.InvariantCulture.CompareInfo;
        }

        public int Compare(object a, object b)
        {
            string text = a as string;
            string text2 = b as string;
            if (text != null && text2 != null)
            {
                return m_compareInfo.Compare(text, text2);
            }
            return Comparer.Default.Compare(a, b);
        }
    }
}