using System;
using System.Collections;
using System.Windows.Forms;

namespace TracingDB.Forms
{
    public class LviTextColumnComparer : IComparer
    {
        private int column;
        SortOrder order;

        public LviTextColumnComparer()
        {
            column = 0;
            order = SortOrder.Ascending;
        }

        public LviTextColumnComparer(int column, SortOrder order)
        {
            this.column = column;
            this.order = order;
        }

        public int Compare(object x, object y)
        {
            string txtX = ((ListViewItem)x).SubItems[column].Text;
            string txtY = ((ListViewItem)y).SubItems[column].Text;
            return (order == SortOrder.Descending) ? String.Compare(txtY, txtX) : String.Compare(txtX, txtY);
        }
    }
}