ListView.ListViewItemSorter プロパティ
コントロールの並べ替え比較演算子を取得または設定します。
Public Property ListViewItemSorter As IComparer
[C#]
public IComparer ListViewItemSorter {get; set;}
[C++]
public: __property IComparer* get_ListViewItemSorter();public: __property void set_ListViewItemSorter(IComparer*);
[JScript]
public function get ListViewItemSorter() : IComparer;public function set ListViewItemSorter(IComparer);
プロパティ値
コントロールの並べ替え比較演算子を表す IComparer 。
解説
ListViewItemSorter プロパティを使用すると、 Sort メソッドが呼び出されたときに ListView コントロールで項目の並べ替えを実行するオブジェクトを指定できます。指定するオブジェクトは、 IComparer インターフェイスを実装するクラスのインスタンスである必要があります。このインターフェイスには、 IComparer.Sort という名前の 1 つのメソッドがあります。
このプロパティを使用すると、詳細ビューで列見出しをクリックしたときなどにカスタムの並べ替えを実行できます。これを行うには、 IComparer インターフェイスを実装し、並べ替えを行う列のインデックスを受け付けるコンストラクタを提供するクラスを作成します。次に、クリックした列のインデックスを使用してこのクラスのインスタンスを作成する ColumnClick イベントのハンドラを実装できます。 ListViewItemSorter プロパティを新しいインスタンスに設定すると、指定したオブジェクトを使用して、 ListView コントロールが自動的に並べ替えられます。 Sort メソッドへの後続呼び出しには同じオブジェクトが使われます。
メモ ListViewItemSorter プロパティの値を設定すると、 Sort メソッドが自動的に呼び出されます。
使用例
[Visual Basic, C#, C++] ListView コントロールの列がクリックされたときに手動で項目を並べ替える ListView コントロールが配置されたフォームを作成する例を次に示します。この例では、 ListViewItem の比較を実行する System.Collections.IComparer インターフェイスを実装するクラスを ListViewItemComparer という名前で定義します。また、 ListViewItemComparer のインスタンスを作成し、これを使用して ListView コントロールの ListViewItemSorter プロパティを設定します。 ColumnClick イベント ハンドラでの Sort メソッド呼び出しでは、 ListViewItemComparer に定義されているメソッドを使用し、クリックされた列を基準に、項目の並べ替えを実行します。
Imports System
Imports System.Windows.Forms
Imports System.Drawing
Imports System.Collections
Namespace ListViewSortFormNamespace
Public Class ListViewSortForm
Inherits Form
Private listView1 As ListView
Public Sub New()
' Create ListView items to add to the control.
Dim listViewItem1 As New ListViewItem(New String() {"Banana", "a", "b", "c"}, -1, Color.Empty, Color.Yellow, Nothing)
Dim listViewItem2 As New ListViewItem(New String() {"Cherry", "v", "g", "t"}, -1, Color.Empty, Color.Red, New Font("Microsoft Sans Serif", 8.25F, FontStyle.Regular, GraphicsUnit.Point, CType(0, System.Byte)))
Dim listViewItem3 As New ListViewItem(New String() {"Apple", "h", "j", "n"}, -1, Color.Empty, Color.Lime, Nothing)
Dim listViewItem4 As New ListViewItem(New String() {"Pear", "y", "u", "i"}, -1, Color.Empty, Color.FromArgb(CType(192, System.Byte), CType(128, System.Byte), CType(156, System.Byte)), Nothing)
'Initialize the ListView control and add columns to it.
Me.listView1 = New ListView
' Set the initial sorting type for the ListView.
Me.listView1.Sorting = SortOrder.None
' Disable automatic sorting to enable manual sorting.
Me.listView1.View = View.Details
' Add columns and set their text.
Me.listView1.Columns.Add(New ColumnHeader)
Me.listView1.Columns(0).Text = "Column 1"
Me.listView1.Columns(0).Width = 100
listView1.Columns.Add(New ColumnHeader)
listView1.Columns(1).Text = "Column 2"
listView1.Columns.Add(New ColumnHeader)
listView1.Columns(2).Text = "Column 3"
listView1.Columns.Add(New ColumnHeader)
listView1.Columns(3).Text = "Column 4"
' Suspend control logic until form is done configuring form.
Me.SuspendLayout()
' Add Items to the ListView control.
Me.listView1.Items.AddRange(New ListViewItem() {listViewItem1, listViewItem2, listViewItem3, listViewItem4})
' Set the location and size of the ListView control.
Me.listView1.Location = New Point(10, 10)
Me.listView1.Name = "listView1"
Me.listView1.Size = New Size(300, 100)
Me.listView1.TabIndex = 0
' Enable editing of the items in the ListView.
Me.listView1.LabelEdit = True
' Connect the ListView.ColumnClick event to the ColumnClick event handler.
AddHandler Me.listView1.ColumnClick, AddressOf ColumnClick
' Initialize the form.
Me.AutoScaleBaseSize = New Size(5, 13)
Me.ClientSize = New Size(400, 400)
Me.Controls.AddRange(New Control() {Me.listView1})
Me.Name = "ListViewSortForm"
Me.Text = "Sorted ListView Control"
' Resume layout of the form.
Me.ResumeLayout(False)
End Sub 'New
' ColumnClick event handler.
Private Sub ColumnClick(ByVal o As Object, ByVal e As ColumnClickEventArgs)
' Set the ListViewItemSorter property to a new ListViewItemComparer
' object. Setting this property immediately sorts the
' ListView using the ListViewItemComparer object.
Me.listView1.ListViewItemSorter = New ListViewItemComparer(e.Column)
End Sub
End Class
' Implements the manual sorting of items by columns.
Class ListViewItemComparer
Implements IComparer
Private col As Integer
Public Sub New()
col = 0
End Sub
Public Sub New(ByVal column As Integer)
col = column
End Sub
Public Function Compare(ByVal x As Object, ByVal y As Object) As Integer _
Implements IComparer.Compare
Return [String].Compare(CType(x, ListViewItem).SubItems(col).Text, CType(y, ListViewItem).SubItems(col).Text)
End Function
End Class
End Namespace
[C#]
using System;
using System.Windows.Forms;
using System.Drawing;
using System.Collections;
namespace ListViewSortFormNamespace
{
public class ListViewSortForm : Form
{
private ListView listView1;
public ListViewSortForm()
{
// Create ListView items to add to the control.
ListViewItem listViewItem1 = new ListViewItem(new string[] {"Banana","a","b","c"}, -1, Color.Empty, Color.Yellow, null);
ListViewItem listViewItem2 = new ListViewItem(new string[] {"Cherry","v","g","t"}, -1, Color.Empty, Color.Red, new Font("Microsoft Sans Serif", 8.25F, FontStyle.Regular, GraphicsUnit.Point, ((System.Byte)(0))));
ListViewItem listViewItem3 = new ListViewItem(new string[] {"Apple","h","j","n"}, -1, Color.Empty, Color.Lime, null);
ListViewItem listViewItem4 = new ListViewItem(new string[] {"Pear","y","u","i"}, -1, Color.Empty, Color.FromArgb(((System.Byte)(192)), ((System.Byte)(128)), ((System.Byte)(156))), null);
//Initialize the ListView control and add columns to it.
this.listView1 = new ListView();
// Set the initial sorting type for the ListView.
this.listView1.Sorting = SortOrder.None;
// Disable automatic sorting to enable manual sorting.
this.listView1.View = View.Details;
// Add columns and set their text.
this.listView1.Columns.Add(new ColumnHeader());
this.listView1.Columns[0].Text = "Column 1";
this.listView1.Columns[0].Width = 100;
listView1.Columns.Add(new ColumnHeader());
listView1.Columns[1].Text = "Column 2";
listView1.Columns.Add(new ColumnHeader());
listView1.Columns[2].Text = "Column 3";
listView1.Columns.Add(new ColumnHeader());
listView1.Columns[3].Text = "Column 4";
// Suspend control logic until form is done configuring form.
this.SuspendLayout();
// Add Items to the ListView control.
this.listView1.Items.AddRange(new ListViewItem[] {listViewItem1,
listViewItem2,
listViewItem3,
listViewItem4});
// Set the location and size of the ListView control.
this.listView1.Location = new Point(10, 10);
this.listView1.Name = "listView1";
this.listView1.Size = new Size(300, 100);
this.listView1.TabIndex = 0;
// Enable editing of the items in the ListView.
this.listView1.LabelEdit = true;
// Connect the ListView.ColumnClick event to the ColumnClick event handler.
this.listView1.ColumnClick += new ColumnClickEventHandler(ColumnClick);
// Initialize the form.
this.AutoScaleBaseSize = new Size(5, 13);
this.ClientSize = new Size(400, 400);
this.Controls.AddRange(new Control[] {this.listView1});
this.Name = "ListViewSortForm";
this.Text = "Sorted ListView Control";
// Resume layout of the form.
this.ResumeLayout(false);
}
// ColumnClick event handler.
private void ColumnClick(object o, ColumnClickEventArgs e)
{
// Set the ListViewItemSorter property to a new ListViewItemComparer
// object. Setting this property immediately sorts the
// ListView using the ListViewItemComparer object.
this.listView1.ListViewItemSorter = new ListViewItemComparer(e.Column);
}
[System.STAThreadAttribute()]
public static void Main()
{
Application.Run(new ListViewSortForm());
}
}
// Implements the manual sorting of items by columns.
class ListViewItemComparer : IComparer
{
private int col;
public ListViewItemComparer()
{
col = 0;
}
public ListViewItemComparer(int column)
{
col = column;
}
public int Compare(object x, object y)
{
return String.Compare(((ListViewItem)x).SubItems[col].Text, ((ListViewItem)y).SubItems[col].Text);
}
}
}
[C++]
#using <mscorlib.dll>
#using <System.dll>
#using <System.Drawing.dll>
#using <System.Windows.Forms.dll>
using namespace System;
using namespace System::Windows::Forms;
using namespace System::Drawing;
using namespace System::Collections;
// Implements the manual sorting of items by columns.
__gc class ListViewItemComparer : public IComparer {
private:
int col;
public:
ListViewItemComparer() {
col=0;
}
ListViewItemComparer(int column) {
col=column;
}
int Compare(Object* x, Object* y) {
return String::Compare((dynamic_cast<ListViewItem*>(x))->SubItems->Item[col]->Text,
(dynamic_cast<ListViewItem*>(y))->SubItems->Item[col]->Text);
}
};
public __gc class ListViewSortForm : public Form {
private:
ListView* listView1;
public:
ListViewSortForm() {
// Create ListView items to add to the control.
String* temp0 [] = {S"Banana", S"a", S"b", S"c"};
ListViewItem* listViewItem1 = new ListViewItem(temp0, -1, Color::Empty, Color::Yellow, 0);
String* temp1 [] = {S"Cherry", S"v", S"g", S"t"};
ListViewItem* listViewItem2 = new ListViewItem(temp1, -1, Color::Empty, Color::Red,
new System::Drawing::Font(S"Microsoft Sans Serif", 8.25F, FontStyle::Regular, GraphicsUnit::Point, 0));
String* temp2 [] = {S"Apple", S"h", S"j", S"n"};
ListViewItem* listViewItem3 = new ListViewItem(temp2, -1, Color::Empty, Color::Lime, 0);
String* temp3 [] = {S"Pear", S"y", S"u", S"i"};
ListViewItem* listViewItem4 = new ListViewItem(temp3, -1, Color::Empty,
Color::FromArgb(192, 128, 156), 0);
//Initialize the ListView control and add columns to it.
this->listView1 = new ListView();
// Set the initial sorting type for the ListView.
this->listView1->Sorting = SortOrder::None;
// Disable automatic sorting to enable manual sorting.
this->listView1->View = View::Details;
// Add columns and set their text.
this->listView1->Columns->Add(new ColumnHeader());
this->listView1->Columns->Item[0]->Text = S"Column 1";
this->listView1->Columns->Item[0]->Width = 100;
listView1->Columns->Add(new ColumnHeader());
listView1->Columns->Item[1]->Text=S"Column 2";
listView1->Columns->Add(new ColumnHeader());
listView1->Columns->Item[2]->Text=S"Column 3";
listView1->Columns->Add(new ColumnHeader());
listView1->Columns->Item[3]->Text=S"Column 4";
// Suspend control logic until form is done configuring form.
this->SuspendLayout();
// Add Items to the ListView control.
ListViewItem* temp4 [] = {
listViewItem1,
listViewItem2,
listViewItem3,
listViewItem4};
this->listView1->Items->AddRange(temp4);
// Set the location and size of the ListView control.
this->listView1->Location = Point(10, 10);
this->listView1->Name = S"listView1";
this->listView1->Size = System::Drawing::Size(300, 100);
this->listView1->TabIndex = 0;
// Enable editing of the items in the ListView.
this->listView1->LabelEdit = true;
// Connect the ListView::ColumnClick event to the ColumnClick event handler.
this->listView1->ColumnClick += new ColumnClickEventHandler(this, &ListViewSortForm::ColumnClick);
// Initialize the form.
this->AutoScaleBaseSize = System::Drawing::Size(5, 13);
this->ClientSize = System::Drawing::Size(400, 400);
Control* temp5 [] = {this->listView1};
this->Controls->AddRange(temp5);
this->Name = S"ListViewSortForm";
this->Text = S"Sorted ListView Control";
// Resume lay->Item[Out] of* the form.
this->ResumeLayout(false);
}
// ColumnClick event handler.
private:
void ColumnClick(Object* /*o*/, ColumnClickEventArgs* e) {
// Set the ListViewItemSorter property to a new ListViewItemComparer
// object. Setting this property immediately sorts the
// ListView using the ListViewItemComparer object.
this->listView1->ListViewItemSorter = new ListViewItemComparer(e->Column);
}
};
[System::STAThreadAttribute]
int main() {
Application::Run(new ListViewSortForm());
}
[JScript] JScript のサンプルはありません。Visual Basic、C#、および C++ のサンプルを表示するには、このページの左上隅にある言語のフィルタ ボタン .gif)
をクリックします。
必要条件
プラットフォーム: Windows 98, Windows NT 4.0, Windows Millennium Edition, Windows 2000, Windows XP Home Edition, Windows XP Professional, Windows Server 2003 ファミリ
参照
ListView クラス | ListView メンバ | System.Windows.Forms 名前空間 | IComparer | ColumnClick