可排序的ListView

  public partial class ListViewEx : ListView
    {
        private bool flag = false;

        public ListViewEx()
        {
            InitializeComponent();
        }

        public ListViewEx(IContainer container)
        {
            container.Add(this);

            InitializeComponent();
        }

        protected override void OnColumnClick(ColumnClickEventArgs e)
        {
            base.OnColumnClick(e);
            this.ListViewItemSorter = new ListViewItemComparer(e.Column,flag);
            if (flag) flag = false;
            else flag = true;
        }
    }


    class ListViewItemComparer : System.Collections.IComparer
    {
        private int _column;
        private bool _flag;
        public ListViewItemComparer(int column,bool flag)
        {
            this._column = column;
            this._flag = flag;
        }

        #region IComparer Members
        
        public int Compare(object x, object y)
        {
            int t= (string.Compare(((ListViewItem)x).SubItems[_column].Text, ((ListViewItem)y).SubItems[_column].Text));
            if (_flag) { t = -t; }
            return t;
        }
        #endregion
    }


/////////////////////////
this.FullRowSelect = true;
this.GridLines = true;
this.View = System.Windows.Forms.View.Details;

        void InitListView()
        {          

            int x = 20;
            int y = 200;
           
            this.listViewEx.BeginUpdate();
            this.listViewEx.Clear();

            DateTime d1 = DateTime.Now;

            for (int i = 0; i < x; i++)
            {
                this.listViewEx.Columns.Add(i.ToString(), 8 * 12, HorizontalAlignment.Center);
            }
            ListViewItem lv=null;           
            for (int i = 0; i < y; i++)
            {
                lv = new ListViewItem(i.ToString());
              
                lv.Text = i.ToString();              
                for (int j = 1; j < x; j++)
                {                    
                    lv.SubItems.Add(i.ToString() + ", " + j.ToString());
                }
                this.listViewEx.Items.Add(lv);
            }
            TimeSpan ts1 = DateTime.Now - d1;
            this.Text = ts1.ToString();
            this.listViewEx.EndUpdate();

        }