using System;
using System.Collections;
using System.Windows.Forms;
//在转载的基础上有所完善
namespace TDRFactory
{
    /// <summary>
    /// 对ListView点击列标题自动排序功能
    /// </summary>
    public class ListViewHelper
    {
        /// <summary>
        /// 构造函数
        /// </summary>
        public ListViewHelper()
        {
            //
            // TODO: 在此处添加构造函数逻辑
            //
        }

        public static void ListView_ColumnClick(object sender, System.Windows.Forms.ColumnClickEventArgs e)
        {
            System.Windows.Forms.ListView lv = sender as System.Windows.Forms.ListView;
            // 检查点击的列是不是现在的排序列.
            if (e.Column == (lv.ListViewItemSorter as ListViewColumnSorter).SortColumn)
            {
                // 重新设置此列的排序方法.
                if ((lv.ListViewItemSorter as ListViewColumnSorter).Order == System.Windows.Forms.SortOrder.Ascending)
                {
                    (lv.ListViewItemSorter as ListViewColumnSorter).Order = System.Windows.Forms.SortOrder.Descending;
                }
                else
                {
                    (lv.ListViewItemSorter as ListViewColumnSorter).Order = System.Windows.Forms.SortOrder.Ascending;
                }
            }
            else
            {
                // 设置排序列，默认为正向排序
                (lv.ListViewItemSorter as ListViewColumnSorter).SortColumn = e.Column;
                (lv.ListViewItemSorter as ListViewColumnSorter).Order = System.Windows.Forms.SortOrder.Ascending;
            }
            // 用新的排序方法对ListView排序
            ((System.Windows.Forms.ListView)sender).Sort();
        }
    }

    /// <summary>
    /// 继承自IComparer
    /// </summary>
    public class ListViewColumnSorter : System.Collections.IComparer
    {
        /// <summary>
        /// 指定按照哪个列排序
        /// </summary>
        private int ColumnToSort;
        /// <summary>
        /// 指定排序的方式
        /// </summary>
        private System.Windows.Forms.SortOrder OrderOfSort;
        /// <summary>
        /// 声明CaseInsensitiveComparer类对象
        /// </summary>
        private System.Collections.CaseInsensitiveComparer ObjectCompare;

        /// <summary>
        /// 构造函数
        /// </summary>
        public ListViewColumnSorter()
        {
            // 默认按第一列排序
            ColumnToSort = 0;

            // 排序方式为不排序
            OrderOfSort = System.Windows.Forms.SortOrder.None;

            // 初始化CaseInsensitiveComparer类对象
            ObjectCompare = new System.Collections.CaseInsensitiveComparer();
        }

        /// <summary>
        /// 重写IComparer接口.
        /// </summary>
        /// <param name="x">要比较的第一个对象</param>
        /// <param name="y">要比较的第二个对象</param>
        /// <returns>比较的结果.如果相等返回0，如果x大于y返回1，如果x小于y返回-1</returns>
        public int Compare(object x, object y)
        {
            int compareResult;
            System.Windows.Forms.ListViewItem listviewX, listviewY;

            // 将比较对象转换为ListViewItem对象
            listviewX = (System.Windows.Forms.ListViewItem)x;
            listviewY = (System.Windows.Forms.ListViewItem)y;

            string xText = listviewX.SubItems[ColumnToSort].Text;
            string yText = listviewY.SubItems[ColumnToSort].Text;

            int xInt, yInt;
            double xDouble,yDouble;
            DateTime xDate, yDate;
            // 比较,如果值为IP地址，则根据IP地址的规则排序。
            if (IsIP(xText) && IsIP(yText))
            {
                compareResult = CompareIp(xText, yText);
            }
            else if (int.TryParse(xText, out xInt) && int.TryParse(yText, out yInt)) //是否全为数字
            {
                //比较数字
                compareResult = CompareInt(xInt, yInt);
            }
            else if (double.TryParse(xText, out xDouble) && double.TryParse(yText, out yDouble