抛砖引玉――实现LISTVIEW点击COLUMN排序的代码，可实现按时间，字符，数字排序（控件部分）

using System;
using System.ComponentModel;
using System.Collections;
using System.Diagnostics;
using System.Windows.Forms;
using System.Drawing;
namespace ListViewControl
{
    ///
    /// Summary description for UserControl1.
    ///
    public class EastSpider : System.Windows.Forms.ListView
    {
        ///
        /// Required designer variable.
        ///
        ///
        private Comparer myComparer;
        private ArrayList colTypes = new ArrayList();
        private System.ComponentModel.Container components = null;
        ///
        /// Sort Interface
        ///
        public class Comparer : IComparer
        {
       private int column;
       private int sign;
       private EastSpider.ColumnTypeEnum colType;