[转]C# ListView 单击标题实现排序(在转载的基础上有所完善)

来源：互联网发布：js get url parameter 编辑：程序博客网时间：2024/05/18 19:21

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)) //整是否全是浮点型            {                                //比较浮点型数字                compareResult = CompareDouble(xDouble, yDouble);            }             else if (int.TryParse(xText, out xInt) && double.TryParse(yText, out yDouble)) //整型和浮点型            {                                //比较浮点型数字                compareResult = CompareIntAndDouble(xInt, yDouble);            }            else if (DateTime.TryParse(xText, out xDate) && DateTime.TryParse(yText, out yDate)) //整型和浮点型            {                               //比较日期                compareResult = CompareDate(xDate, yDate);            }            else            {                //比较对象                compareResult = ObjectCompare.Compare(xText, yText);            }            // 根据上面的比较结果返回正确的比较结果            if (OrderOfSort == System.Windows.Forms.SortOrder.Ascending)            {                // 因为是正序排序，所以直接返回结果                return compareResult;            }            else if (OrderOfSort == System.Windows.Forms.SortOrder.Descending)            {                // 如果是反序排序，所以要取负值再返回                return (-compareResult);            }            else            {                // 如果相等返回0                return 0;            }        }        /// <summary>        /// 判断是否为正确的IP地址，IP范围（0.0.0.0～255.255.255）        /// </summary>        /// <param name="ip">需验证的IP地址</param>        /// <returns></returns>        public bool IsIP(String ip)        {            return System.Text.RegularExpressions.Regex.Match(ip, @"^(25[0-5]|2[0-4][0-9]|[0-1]{1}[0-9]{2}|[1-9]{1}[0-9]{1}|[1-9]|0)\.(25[0-5]|2[0-4][0-9]|[0-1]{1}[0-9]{2}|[1-9]{1}[0-9]{1}|[1-9]|0)\.(25[0-5]|2[0-4][0-9]|[0-1]{1}[0-9]{2}|[1-9]{1}[0-9]{1}|[1-9]|0)\.(25[0-5]|2[0-4][0-9]|[0-1]{1}[0-9]{2}|[1-9]{1}[0-9]{1}|[0-9])$").Success;        }        /// <summary>        /// 比较两个数字的大小        /// </summary>        /// <param name="ipx">要比较的第一个对象</param>        /// <param name="ipy">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>        private int CompareInt(int x, int y)        {            if (x > y)            {                return 1;            }            else if (x < y)            {                return -1;            }            else            {                return 0;            }        }        private int CompareDouble(double x, double y)        {            if (x > y)            {                return 1;            }            else if (x < y)            {                return -1;            }            else            {                return 0;            }        }        private int CompareIntAndDouble(int x, double y)        {            if (x > y)            {                return 1;            }            else if (x < y)            {                return -1;            }            else            {                return 0;            }        }        private int CompareDate(DateTime x, DateTime y)        {            if (x > y)            {                return 1;            }            else if (x < y)            {                return -1;            }            else            {                return 0;            }        }        /// <summary>        /// 比较两个IP地址的大小        /// </summary>        /// <param name="ipx">要比较的第一个对象</param>        /// <param name="ipy">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>        private int CompareIp(string ipx, string ipy)        {            string[] ipxs = ipx.Split('.');            string[] ipys = ipy.Split('.');            for (int i = 0; i < 4; i++)            {                if (Convert.ToInt32(ipxs[i]) > Convert.ToInt32(ipys[i]))                {                    return 1;                }                else if (Convert.ToInt32(ipxs[i]) < Convert.ToInt32(ipys[i]))                {                    return -1;                }                else                {                    continue;                }            }            return 0;        }        /// <summary>        /// 获取或设置按照哪一列排序.        /// </summary>        public int SortColumn        {            set            {                ColumnToSort = value;            }            get            {                return ColumnToSort;            }        }        /// <summary>        /// 获取或设置排序方式.        /// </summary>        public System.Windows.Forms.SortOrder Order        {            set            {                OrderOfSort = value;            }            get            {                return OrderOfSort;            }        }    }}

在窗体加载时调用：

            //设置listview，使其可以在单击列头时排序            this.lvProduc.ListViewItemSorter = new ListViewColumnSorter();            this.lvProduc.ColumnClick += new ColumnClickEventHandler(ListViewHelper.ListView_ColumnClick);

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