我们在使用一些软件时，经常会发现通过点击ListView的列能够改变内容的排序顺序，那么在C#中能不能做到这一点呢？回答是肯定的。具体思路是通过控件类ListView派生出一个新类EastSpider，在EastSpider类中定义自己需要的域、属性、方法和事件，主要是通过类中的一个事件来捕捉用户单击事件，并定义相关的方法来处理，即实现对内容的排序。

这里可以可实现按时间，字符，数字排序。具体源代码如下：（如有错误请评论通知）

using System;using System.ComponentModel;using System.Collections;using System.Diagnostics;using System.Windows.Forms;using System.Drawing;namespace ListViewControl{/// <summary>/// Summary description for UserControl1./// </summary>public class EastSpider : System.Windows.Forms.ListView{/// <summary>/// Required designer variable./// </summary>/// private Comparer myComparer;private ArrayList colTypes = new ArrayList();private System.ComponentModel.Container components = null;/// <summary>/// Sort Interface/// </summary>public class Comparer : IComparer{private int column;private int sign;private EastSpider.ColumnTypeEnum colType;public Comparer(){column = 0;sign = 1;colType = EastSpider.ColumnTypeEnum.ColumnTypeText;}public int Column{set{column = value;}get{return column;}}public int Sign{set{sign = value;}get{return sign;}}public ColumnTypeEnum ColType{set{colType = value;}get{return colType;}}public int Compare(object o1,object o2){ListViewItem li1 = (ListViewItem)o1;ListViewItem li2 = (ListViewItem)o2;string s1,s2;try{if (column == 0){s1 = li1.Text;s2 = li2.Text;//return sign * String.Compare(s1,s2);}else{s1 = li1.SubItems[column].Text;s2 = li2.SubItems[column].Text;}if (s1.Length == 0){if (s2.Length > 0){return (-sign);}else{return 0;}}else if (s2.Length == 0){return sign;}switch (colType){case ColumnTypeEnum.ColumnTypeNumber:long d1 = long.Parse(s1);long d2 = long.Parse(s2);if (d1 < d2){return (-sign);}else if (d1 > d2){return sign;}else{return 0;}case ColumnTypeEnum.ColumnTypeDate:DateTime t1 = DateTime.Parse(s1);DateTime t2 = DateTime.Parse(s2);return sign*DateTime.Compare(t1,t2);default:return sign * String.Compare(s1,s2);}}catch{return (0);}}}/// <summary>/// 排序类型/// </summary>[Category("SortType"),Description("The Sort Type of Column you wanted do")]public enum ColumnTypeEnum{ColumnTypeText = 0,ColumnTypeDate = 1,ColumnTypeNumber = 2}/// <summary>/// Clear All Items And Columns/// </summary>private void ClearAll(){Clear();ClearColumns();}/// <summary>/// Clear All Item/// </summary>private new void Clear(){base.Items.Clear(); }/// <summary>/// Clear All Columns And ColType/// </summary>private void ClearColumns(){base.Columns.Clear();colTypes.Clear();}public void AddColumn(string caption,ColumnTypeEnum columnType,HorizontalAlignment ha,int width){ColumnHeader ch = new ColumnHeader();ch.Text = caption;ch.TextAlign = ha;ch.Width = width;base.Columns.Add(ch);colTypes.Add(columnType);}/// <summary>/// Add Items/// </summary>/// <param name="item"></param>/// <param name="bgcolor"></param>/// <returns></returns>public int AddRow(ListViewItem item,Color bgcolor){//ListViewItem li = new ListViewItem(args);item.UseItemStyleForSubItems = true;item.BackColor = bgcolor;Items.Add(item);return item.Index;}/// <summary>/// 点击事件/// </summary>/// <param name="sender"></param>/// <param name="e"></param>protected void ev_ColumnClick(object sender,System.Windows.Forms.ColumnClickEventArgs e){//MessageBox.Show(e.Column.ToString());myComparer.Column = e.Column;myComparer.Sign = (base.Sorting == SortOrder.Ascending)? -1:1;myComparer.ColType = (ColumnTypeEnum)colTypes[e.Column];base.BeginUpdate();switch (base.Sorting){case SortOrder.Ascending:base.Sorting = SortOrder.Descending;break;case SortOrder.Descending:base.Sorting = SortOrder.Ascending;break;}base.EndUpdate();}/// <summary>/// Override onclick/// </summary>/// <param name="e"></param>protected override void OnClick( System.EventArgs e){base.OnClick(e);}/// <summary>/// Override OnMouseDown/// </summary>/// <param name="e"></param>protected override void OnMouseDown( System.Windows.Forms.MouseEventArgs e){OnClick(e);}/// <summary>/// InitializeComponent/// </summary>public EastSpider(){// This call is required by the Windows.Forms Form Designer.base.ColumnClick += new System.Windows.Forms.ColumnClickEventHandler(this.ev_ColumnClick);myComparer = new Comparer();base.ListViewItemSorter = (IComparer)myComparer;//InitializeComponent();// TODO: Add any initialization after the InitForm call}/// <summary>/// Clean up any resources being used./// </summary>protected override void Dispose( bool disposing ){if( disposing ){//if (components != null) //{//components.Dispose();//}colTypes.Clear();base.Dispose(disposing);}}#region Component Designer generated code/// <summary>/// Required method for Designer support - do not modify /// the contents of this method with the code editor./// </summary>private void InitializeComponent(){components = new System.ComponentModel.Container();}#endregion}}