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SortableListView.cs
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71 lines (62 loc) · 2.07 KB
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using System;
using System.Collections;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Windows.Forms;
namespace RemoteControl.Server
{
class SortableListView : ListView
{
private Dictionary<int,SortOrder> mapping = new Dictionary<int, SortOrder>();
public SortableListView()
{
this.ColumnClick += new ColumnClickEventHandler(SortableListView_ColumnClick);
this.ListViewItemSorter = new ListViewItemComparer();
}
void SortableListView_ColumnClick(object sender, ColumnClickEventArgs e)
{
// 记录每列的排序方式
if(!mapping.ContainsKey(e.Column))
mapping.Add(e.Column, SortOrder.Ascending);
var comparer = this.ListViewItemSorter as ListViewItemComparer;
comparer.SortColumn = e.Column;
comparer.Order = mapping[e.Column];
this.Sort();
// 切换每列的排列方式
if (mapping[e.Column] == SortOrder.Ascending)
{
mapping[e.Column] = SortOrder.Descending;
}
else if (mapping[e.Column] == SortOrder.Descending)
{
mapping[e.Column] = SortOrder.Ascending;
}
}
class ListViewItemComparer:IComparer
{
public int SortColumn = 0;
public SortOrder Order = SortOrder.Ascending;
public int Compare(object x, object y)
{
var itemX = x as ListViewItem;
var itemY = y as ListViewItem;
int value = 1;
try
{
value = itemX.SubItems[SortColumn].Text.CompareTo(itemY.SubItems[SortColumn].Text);
}
catch (Exception ex)
{
return 1;
}
if (Order == SortOrder.Ascending)
return value;
else
{
return -1*value;
}
}
}
}
}