ListView 排序功能代码,CSharp代码库,德仔网

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【CSharp】 ListView 排序功能
作者:Dezai.CN / 发布于2011/12/13/ 790
<div>首先定义一个ListViewHelper类，代码如下：
<div class="postText" twffan="done">using System;
using System.Collections;
using System.Data;
using System.Windows.Forms;
using System.Drawing;</div>
<div class="postText" twffan="done">namespace QQMLogin
{
/// <summary>
/// 模块编号:
/// 模块功能:对ListView的封装
/// 作 者:雷友兵
/// 编写时间:2007-1-10
/// </summary></div>
<div class="postText" twffan="done">public class ListViewHelper
{
/**//// <summary>
/// 构造函数
/// </summary>
public ListViewHelper()
{
//
// TODO: 在此处添加构造函数逻辑
//
}
<div class="postText" twffan="done">public static void ListView_ColumnClick(object sender, ColumnClickEventArgs e)
{
ListView lv = sender as 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 == SortOrder.Ascending)
{
(lv.ListViewItemSorter as ListViewColumnSorter).Order = SortOrder.Descending;
}
else
{
(lv.ListViewItemSorter as ListViewColumnSorter).Order = 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 = SortOrder.Ascending;
}
// 用新的排序方法对ListView排序
((ListView)sender).Sort();
}
}
<div class="postText" twffan="done">/**//// <summary>
/// 继承自IComparer
/// </summary>
public class ListViewColumnSorter : 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 SortOrder OrderOfSort;
/**//// <summary>
/// 声明CaseInsensitiveComparer类对象，
/// 参见ms-help://MS.VSCC.2003/MS.MSDNQTR.2003FEB.2052/cpref/html/frlrfSystemCollectionsCaseInsensitiveComparerClassTopic.htm
/// </summary>
private CaseInsensitiveComparer ObjectCompare;</div>
<div class="postText" twffan="done">/**//// <summary>
/// 构造函数
/// </summary>
public ListViewColumnSorter()
{
// 默认按第一列排序
ColumnToSort = 0;</div>
<div class="postText" twffan="done">// 排序方式为不排序
OrderOfSort = SortOrder.None;</div>
<div class="postText" twffan="done">// 初始化CaseInsensitiveComparer类对象
ObjectCompare = new CaseInsensitiveComparer();
}
<div class="postText" twffan="done">/**//// <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;
ListViewItem listviewX, listviewY;</div>
<div class="postText" twffan="done">// 将比较对象转换为ListViewItem对象
listviewX = (ListViewItem)x;
listviewY = (ListViewItem)y;</div>
<div class="postText" twffan="done">// 比较
compareResult = ObjectCompare.Compare(listviewX.SubItems[ColumnToSort].Text, listviewY.SubItems[ColumnToSort].Text);</div>
<div class="postText" twffan="done">// 根据上面的比较结果返回正确的比较结果
if (OrderOfSort == SortOrder.Ascending)
{
// 因为是正序排序，所以直接返回结果
return compareResult;
}
else if (OrderOfSort == 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;
}
}
<div class="postText" twffan="done">/**//// <summary>
/// 获取或设置按照哪一列排序.
/// </summary>
public int SortColumn
{
set
{
ColumnToSort = value;
}
get
{
return ColumnToSort;
}
}
<div class="postText" twffan="done">/**//// <summary>
/// 获取或设置排序方式.
/// </summary>
public SortOrder Order
{
set
{
OrderOfSort = value;
}
get
{
return OrderOfSort;
}
}
}
<div class="postText" twffan="done">}


以上代码封装后无须更改，在窗体中添加一个ListView控件，在窗体的Load事件中添加如下代码：</div>
<div class="postText" twffan="done">
<div style="border-bottom: windowtext 0.5pt solid; border-left: windowtext 0.5pt solid; padding-bottom: 4px; padding-left: 5.4pt; width: 95%; padding-right: 5.4pt; background: rgb(230,230,230) 0% 50%; border-top: windowtext 0.5pt solid; border-right: windowtext 0.5pt solid; padding-top: 4px; moz-background-clip: -moz-initial; moz-background-origin: -moz-initial; moz-background-inline-policy: -moz-initial" twffan="done">
<div twffan="done"><span style="color: rgb(0,0,255)" twffan="done">private</span><span style="color: rgb(0,0,0)" twffan="done"> </span><span style="color: rgb(0,0,255)" twffan="done">void</span><span style="color: rgb(0,0,0)" twffan="done"> Form1_Load(</span><span style="color: rgb(0,0,255)" twffan="done">object</span><span style="color: rgb(0,0,0)" twffan="done"> sender, EventArgs e)
{
</span><span style="color: rgb(0,0,255)" twffan="done">this</span><span style="color: rgb(0,0,0)" twffan="done">.listView1.ListViewItemSorter </span><span style="color: rgb(0,0,0)" twffan="done">=</span><span style="color: rgb(0,0,0)" twffan="done"> </span><span style="color: rgb(0,0,255)" twffan="done">new</span><span style="color: rgb(0,0,0)" twffan="done"> Common.ListViewColumnSorter();
</span><span style="color: rgb(0,0,255)" twffan="done">this</span><span style="color: rgb(0,0,0)" twffan="done">.listView1.ColumnClick </span><span style="color: rgb(0,0,0)" twffan="done">+=</span><span style="color: rgb(0,0,0)" twffan="done"> </span><span style="color: rgb(0,0,255)" twffan="done">new</span><span style="color: rgb(0,0,0)" twffan="done"> ColumnClickEventHandler(Common.ListViewHelper.ListView_ColumnClick)</span></div>
</div>
</div>
</div>
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