ListView排序并隔色显示

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Collections;
using System.Windows.Forms;
using System.Drawing;

namespace STools
{
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;         /**//// <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 = SortOrder.None;             // 初始化CaseInsensitiveComparer类对象
ObjectCompare = new 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;
ListViewItem listviewX, listviewY;             // 将比较对象转换为ListViewItem对象
listviewX = (ListViewItem)x;
listviewY = (ListViewItem)y;             // 比较
compareResult = ObjectCompare.Compare(listviewX.SubItems[ColumnToSort].Text, listviewY.SubItems[ColumnToSort].Text);
//Console.WriteLine(listviewX.SubItems[ColumnToSort].Text + "<->" + listviewY.SubItems[ColumnToSort].Text+":"+compareResult);

// 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;
}
}         /**//// <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 SortOrder Order
{
set
{
OrderOfSort = value;
}
get
{
return OrderOfSort;
}
}
}
}

private void listView1_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.
int column = (lv.ListViewItemSorter as ListViewColumnSorter).SortColumn;//当前排序的序列
listView1.Columns[column].Text = listView1.Columns[column].Text.Replace("↓", "").Replace("↑", "");
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;
listView1.Columns[e.Column].Text += "↑";
}
else
{
(lv.ListViewItemSorter as ListViewColumnSorter).Order = SortOrder.Ascending;
listView1.Columns[e.Column].Text += "↓";
}
}
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;
listView1.Columns[e.Column].Text += "↓";
}
// 用新的排序方法对ListView排序
((ListView)sender).Sort();

for (int i = 0; i < listView1.Items.Count; i++)
{
if (i != 0 && listView1.Items[i].SubItems[e.Column].Text == listView1.Items[i - 1].SubItems[e.Column].Text)
{
listView1.Items[i].BackColor = listView1.Items[i - 1].BackColor;
}
else if (i == 0)
{

listView1.Items[i].BackColor = Color.Transparent;
}
else
{
if (listView1.Items[i - 1].BackColor == Color.Transparent)
{
listView1.Items[i].BackColor = Color.LightBlue;

}
else
{
listView1.Items[i].BackColor = Color.Transparent;
}

}

}
//listView1.Refresh();
}