ListView点击排序功能

先重写一个ListViewItemComparer类的IComparer接口，

代码如下：

 

    class ListViewItemComparer : IComparer
    {
        private int col;
        private SortOrder order;
        public ListViewItemComparer()
        {
            col = 0;
            order = SortOrder.Ascending;
        }
        public ListViewItemComparer(int column, SortOrder order)
        {
            col = column;
            this.order = order;
        }
        public int Compare(object x, object y)
        {
            int returnVal;
            decimal w;
            DateTime r;
            bool k = Decimal.TryParse(((ListViewItem)x).SubItems[col].Text, out w);
            bool s = DateTime.TryParse(((ListViewItem)x).SubItems[col].Text, out r);
            if (k == true && order != SortOrder.Descending)//数字正排序
            {
                Decimal k1 = Int32.Parse(((ListViewItem)x).SubItems[col].Text);
                Decimal k2 = Int32.Parse(((ListViewItem)y).SubItems[col].Text);
                if (k2 > k1)
                    returnVal = -1;
                if (k2 < k1)
                    returnVal = 1;
                else
                    returnVal = 0;
            }
            else
            {
                if (s == true)//时间排序
                {
                    System.DateTime firstDate = DateTime.Parse(((ListViewItem)x).SubItems[col].Text);
                    System.DateTime secondDate = DateTime.Parse(((ListViewItem)y).SubItems[col].Text);
                    returnVal = DateTime.Compare(firstDate, secondDate);
                }
                else//字符排序
                {
                    returnVal = String.Compare(((ListViewItem)x).SubItems[col].Text,
                                ((ListViewItem)y).SubItems[col].Text);
                }
            }

            if (order == SortOrder.Descending)
            {
                if (k == true)//数字倒排序
                {
                    System.Int32 k3 = Int32.Parse(((ListViewItem)x).SubItems[col].Text);
                    System.Int32 k4 = Int32.Parse(((ListViewItem)y).SubItems[col].Text);
                    if (k3 > k4)
                        returnVal = 1;
                    if (k3 < k4)
                        returnVal = -1;
                    else
                        returnVal = 0;
                }
                returnVal *= -1;
            }
            return returnVal;
        }
    }

 

以上代码封装后无须更改，在窗体中添加一个名为lvTable的ListView控件，在窗体的lvTable_ColumnClick事件中添加如下代码：

            int sortColumn = e.Column;
            ListView listView = (ListView)sender;
            if (listView.Name == "lvTable")
            {
                if (lvTable.Sorting == SortOrder.Ascending)
                {
                    lvTable.Sorting = SortOrder.Descending;
                }
                else
                {
                    lvTable.Sorting = SortOrder.Ascending;
                }
                this.lvTable.ListViewItemSorter = new ListViewItemComparer(e.Column, lvTable.Sorting);
            }