Question

I am using SortedList to arrange arraylist records dynamically in sort order by datecolumn, but by default it is sorting in ascending order. I have been trying to get order in descending order but not able to get it.

Answer 1

There is no way to instruct the SortedList to do sorting in descended order. You have to provide your own Comparer like this

    class DescendedDateComparer : IComparer<DateTime>
    {
        public int Compare(DateTime x, DateTime y)
        {
            // use the default comparer to do the original comparison for datetimes
            int ascendingResult = Comparer<DateTime>.Default.Compare(x, y);

            // turn the result around
            return 0 - ascendingResult;
        }
    }

    static void Main(string[] args)
    {
        SortedList<DateTime, string> test = new SortedList<DateTime, string>(new DescendedDateComparer());
    }