//★ List View Sort
using System;
using System.Collections;
using System.Windows.Forms;
using System.IO;
public class MyForm : Form
{
ListView ListView1;
int[] width = { 150, 120, 60, 40 };
string[] head = { "名前", "更新日付", "サイズ", "種類" };
ListViewSort LVSort;
public MyForm()
{
InitializeComponent();
Load += new System.EventHandler(MyForm_Load);
}
private void InitializeComponent()
{
this.ListView1 = new System.Windows.Forms.ListView();
this.SuspendLayout();
// ListView1
this.ListView1.Location = new System.Drawing.Point(12, 12);
this.ListView1.Name = "ListView1";
this.ListView1.Size = new System.Drawing.Size(380, 232);
ListView1.View = View.Details;
ListView1.ColumnClick += new ColumnClickEventHandler(ListView1_ColumnClick);
// MyForm
this.ClientSize = new System.Drawing.Size(400, 256);
this.Controls.Add(this.ListView1);
this.Name = "MyForm";
this.ResumeLayout(false);
}
// ListView の初期化
private void MyForm_Load(object sender, System.EventArgs e)
{
// 列ヘッダの作成
ColumnHeader[] columnHead = new ColumnHeader[4];
for(int i=0; i<4; i++)
{ columnHead[i] = new ColumnHeader();
columnHead[i].Width = width[i];
columnHead[i].Text = head[i];
}
ListView1.Columns.AddRange(columnHead);
//DirectoryInfoを作成
DirectoryInfo di = new DirectoryInfo( "C:\\Test" ); //パスを指定
string[] item = new string[4];
//ファイル一覧の取得
FileInfo [] fis = di.GetFiles("*.*"); //パターンを指定
for(int i=0; i<fis.Length; i++)
{ item[0] = fis[i].FullName;
item[1] = fis[i].LastWriteTime.ToString();
item[2] = fis[i].Length.ToString();
item[3] = fis[i].Extension;
ListView1.Items.Add(new ListViewItem(item));
}
//ListViewSort の初期化
LVSort = new ListViewSort();
LVSort.ColumnModes = new ListViewSort.ComparerMode[]
{ ListViewSort.ComparerMode.String,
ListViewSort.ComparerMode.DateTime,
ListViewSort.ComparerMode.Integer,
ListViewSort.ComparerMode.String
};
//ListView の Sort を指定
ListView1.ListViewItemSorter = LVSort;
}
// 列がクリックされたとき
private void ListView1_ColumnClick(object sender, ColumnClickEventArgs e)
{
LVSort.Column = e.Column;
ListView1.Sort();
}
}
//★ ListView カラムソートクラス
public class ListViewSort : IComparer
{
// 比較モード
public enum ComparerMode
{
String,
Integer,
DateTime
};
private ComparerMode[] _columnModes;
private ComparerMode _mode;
private int _column;
private SortOrder _order;
//☆ Set,Get アクセッサ
// 各列ごとの比較モードを設定
public ComparerMode[] ColumnModes
{
set
{ _columnModes = value; }
}
// 列がクリックされたときに設定
public int Column
{
set
{ if (_column == value) //昇順・降順の切替
{ if (_order == SortOrder.Ascending)
_order = SortOrder.Descending;
else if (_order == SortOrder.Descending)
_order = SortOrder.Ascending;
}
_column = value;
}
get
{ return _column; }
}
// ListViewSortクラスのコンストラクタ
// 並び替える列番号
// 昇順か降順か
// 並び替えの方法
public ListViewSort(int col, SortOrder ord, ComparerMode cmod)
{
_column = col;
_order = ord;
_mode = cmod;
}
public ListViewSort()
{
_column = 0;
_order = SortOrder.Ascending;
_mode = ComparerMode.String;
}
// 比較メソッド
public int Compare(object x, object y)
{
int result = 0;
//ListViewItemの取得
ListViewItem itemx = (ListViewItem) x;
ListViewItem itemy = (ListViewItem) y;
//並べ替えの方法を決定
if (_columnModes != null && _columnModes.Length > _column)
_mode = _columnModes[_column];
//比較モード毎に x と y を比較
switch (_mode)
{
case ComparerMode.String:
result = string.Compare(itemx.SubItems[_column].Text,
itemy.SubItems[_column].Text);
break;
case ComparerMode.Integer:
result = int.Parse(itemx.SubItems[_column].Text) -
int.Parse(itemy.SubItems[_column].Text);
break;
case ComparerMode.DateTime:
result = DateTime.Compare(
DateTime.Parse(itemx.SubItems[_column].Text),
DateTime.Parse(itemy.SubItems[_column].Text));
break;
}
//降順の時は符号を反転
if (_order == SortOrder.Descending)
result = -result;
else if (_order == SortOrder.None)
result = 0;
return result;
}
}
class form01
{
public static void Main()
{
MyForm mf = new MyForm();
Application.Run(mf);
}
}
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