ListView.SelectedItems ListView.SelectedItems ListView.SelectedItems ListView.SelectedItems Property

定義

コントロール内の選択された項目を取得します。Gets the items that are selected in the control.

public:
 property System::Windows::Forms::ListView::SelectedListViewItemCollection ^ SelectedItems { System::Windows::Forms::ListView::SelectedListViewItemCollection ^ get(); };
[System.ComponentModel.Browsable(false)]
public System.Windows.Forms.ListView.SelectedListViewItemCollection SelectedItems { get; }
member this.SelectedItems : System.Windows.Forms.ListView.SelectedListViewItemCollection
Public ReadOnly Property SelectedItems As ListView.SelectedListViewItemCollection

プロパティ値

AListView.SelectedListViewItemCollectionコントロールで選択されている項目を格納しています。A ListView.SelectedListViewItemCollection that contains the items that are selected in the control. 項目が現在選択されていない場合、空ListView.SelectedListViewItemCollectionが返されます。If no items are currently selected, an empty ListView.SelectedListViewItemCollection is returned.

次のコード例に示しますを使用して、 SelectedItemsSelectedIndexChangedイベント、およびHeaderStyleメンバーとListView.SelectedListViewItemCollectionクラス。The following code example demonstrates using the SelectedItems, SelectedIndexChanged event, and HeaderStyle members and the ListView.SelectedListViewItemCollection class. この例を実行するを含むフォームに次のコードを貼り付け、ListViewという名前のオブジェクトListView1TextBoxという名前のTextBox1します。To run this example, paste the following code into a form that contains a ListView object named ListView1 and a TextBox named TextBox1. 呼び出す、InitializeListViewフォームのコンス トラクターのメソッドまたはLoadメソッド。Call the InitializeListView method from the form's constructor or Load method. この例では、イベント ハンドラーが正しく関連付けられている必要があります、SelectedIndexChangedイベントThis example requires the event handler is correctly associated with the SelectedIndexChanged event

// This method adds two columns to the ListView, setting the Text 
// and TextAlign, and Width properties of each ColumnHeader.  The 
// HeaderStyle property is set to NonClickable since the ColumnClick 
// event is not handled.  Finally the method adds ListViewItems and 
// SubItems to each column.
void InitializeListView()
{
   this->ListView1 = gcnew System::Windows::Forms::ListView;
   this->ListView1->BackColor = System::Drawing::SystemColors::Control;
   this->ListView1->Dock = System::Windows::Forms::DockStyle::Top;
   this->ListView1->Location = System::Drawing::Point( 0, 0 );
   this->ListView1->Name = "ListView1";
   this->ListView1->Size = System::Drawing::Size( 292, 130 );
   this->ListView1->TabIndex = 0;
   this->ListView1->View = System::Windows::Forms::View::Details;
   this->ListView1->MultiSelect = true;
   this->ListView1->HideSelection = false;
   this->ListView1->HeaderStyle = ColumnHeaderStyle::Nonclickable;
   ColumnHeader^ columnHeader1 = gcnew ColumnHeader;
   columnHeader1->Text = "Breakfast Item";
   columnHeader1->TextAlign = HorizontalAlignment::Left;
   columnHeader1->Width = 146;
   ColumnHeader^ columnHeader2 = gcnew ColumnHeader;
   columnHeader2->Text = "Price Each";
   columnHeader2->TextAlign = HorizontalAlignment::Center;
   columnHeader2->Width = 142;
   this->ListView1->Columns->Add( columnHeader1 );
   this->ListView1->Columns->Add( columnHeader2 );
   array<String^>^foodList = {"Juice","Coffee","Cereal & Milk","Fruit Plate","Toast & Jelly","Bagel & Cream Cheese"};
   array<String^>^foodPrice = {"1.09","1.09","2.19","2.49","1.49","1.49"};
   for ( int count = 0; count < foodList->Length; count++ )
   {
      ListViewItem^ listItem = gcnew ListViewItem( foodList[ count ] );
      listItem->SubItems->Add( foodPrice[ count ] );
      ListView1->Items->Add( listItem );

   }
   this->Controls->Add( ListView1 );
}
// This method adds two columns to the ListView, setting the Text 
// and TextAlign, and Width properties of each ColumnHeader.  The 
// HeaderStyle property is set to NonClickable since the ColumnClick 
// event is not handled.  Finally the method adds ListViewItems and 
// SubItems to each column.
private void InitializeListView()
{
	this.ListView1 = new System.Windows.Forms.ListView();
	this.ListView1.BackColor = System.Drawing.SystemColors.Control;
	this.ListView1.Dock = System.Windows.Forms.DockStyle.Top;
	this.ListView1.Location = new System.Drawing.Point(0, 0);
	this.ListView1.Name = "ListView1";
	this.ListView1.Size = new System.Drawing.Size(292, 130);
	this.ListView1.TabIndex = 0;
	this.ListView1.View = System.Windows.Forms.View.Details;
	this.ListView1.MultiSelect = true;
	this.ListView1.HideSelection = false;
	this.ListView1.HeaderStyle = ColumnHeaderStyle.Nonclickable;
	
	ColumnHeader columnHeader1 = new ColumnHeader();
	columnHeader1.Text = "Breakfast Item";
	columnHeader1.TextAlign = HorizontalAlignment.Left;
	columnHeader1.Width = 146;

 	ColumnHeader columnHeader2 = new ColumnHeader();
	columnHeader2.Text = "Price Each";
	columnHeader2.TextAlign = HorizontalAlignment.Center;
	columnHeader2.Width = 142;
 
	this.ListView1.Columns.Add(columnHeader1);
	this.ListView1.Columns.Add(columnHeader2);

	string[] foodList = new string[]{"Juice", "Coffee", 
		"Cereal & Milk", "Fruit Plate", "Toast & Jelly", 
		"Bagel & Cream Cheese"};
	string[] foodPrice = new string[]{"1.09", "1.09", "2.19", 
		"2.49", "1.49", "1.49"};
	
	for(int count=0; count < foodList.Length; count++)
	{
		ListViewItem listItem = new ListViewItem(foodList[count]);
		listItem.SubItems.Add(foodPrice[count]);
		ListView1.Items.Add(listItem);
	}
	this.Controls.Add(ListView1);
}

' This method adds two columns to the ListView, setting the Text 
' and TextAlign, and Width properties of each ColumnHeader.  The 
' HeaderStyle property is set to NonClickable since the ColumnClick 
' event is not handled.  Finally the method adds ListViewItems and 
' SubItems to each column.
Private Sub InitializeListView()
    Me.ListView1 = New System.Windows.Forms.ListView
    Me.ListView1.BackColor = System.Drawing.SystemColors.Control
    Me.ListView1.Dock = System.Windows.Forms.DockStyle.Top
    Me.ListView1.Location = New System.Drawing.Point(0, 0)
    Me.ListView1.Name = "ListView1"
    Me.ListView1.Size = New System.Drawing.Size(292, 130)
    Me.ListView1.TabIndex = 0
    Me.ListView1.View = System.Windows.Forms.View.Details
    Me.ListView1.MultiSelect = True
    Me.ListView1.HideSelection = False
    ListView1.HeaderStyle = ColumnHeaderStyle.Nonclickable
    Dim columnHeader1 As New ColumnHeader
    With columnHeader1
        .Text = "Breakfast Item"
        .TextAlign = HorizontalAlignment.Left
        .Width = 146
    End With
    Dim columnHeader2 As New ColumnHeader
    With columnHeader2
        .Text = "Price Each"
        .TextAlign = HorizontalAlignment.Center
        .Width = 142
    End With

    Me.ListView1.Columns.Add(columnHeader1)
    Me.ListView1.Columns.Add(columnHeader2)
    Dim foodList() As String = New String() {"Juice", "Coffee", _
        "Cereal & Milk", "Fruit Plate", "Toast & Jelly", _
        "Bagel & Cream Cheese"}
    Dim foodPrice() As String = New String() {"1.09", "1.09", _
        "2.19", "2.49", "1.49", "1.49"}
    Dim count As Integer
    For count = 0 To foodList.Length - 1
        Dim listItem As New ListViewItem(foodList(count))
        listItem.SubItems.Add(foodPrice(count))
        ListView1.Items.Add(listItem)
    Next
    Me.Controls.Add(Me.ListView1)
End Sub
// Uses the SelectedItems property to retrieve and tally the price 
// of the selected menu items.
void ListView1_SelectedIndexChanged_UsingItems( Object^ /*sender*/, System::EventArgs^ /*e*/ )
{
   ListView::SelectedListViewItemCollection^ breakfast = this->ListView1->SelectedItems;
   double price = 0.0;
   System::Collections::IEnumerator^ myEnum = breakfast->GetEnumerator();
   while ( myEnum->MoveNext() )
   {
      ListViewItem^ item = safe_cast<ListViewItem^>(myEnum->Current);
      price += Double::Parse( item->SubItems[ 1 ]->Text );
   }

   // Output the price to TextBox1.
   TextBox1->Text = price.ToString();
}
// Uses the SelectedItems property to retrieve and tally the price 
// of the selected menu items.
private void ListView1_SelectedIndexChanged_UsingItems(
	object sender, System.EventArgs e)
{

	ListView.SelectedListViewItemCollection breakfast = 
		this.ListView1.SelectedItems;
	
	double price = 0.0;
	foreach ( ListViewItem item in breakfast )
	{
		price += Double.Parse(item.SubItems[1].Text);
	}

	// Output the price to TextBox1.
	TextBox1.Text = price.ToString();
}
' Uses the SelectedItems property to retrieve and tally the price 
' of the selected menu items.
Private Sub ListView1_SelectedIndexChanged_UsingItems _
    (ByVal sender As Object, ByVal e As System.EventArgs) _
    Handles ListView1.SelectedIndexChanged

    Dim breakfast As ListView.SelectedListViewItemCollection = _
        Me.ListView1.SelectedItems
    Dim item As ListViewItem
    Dim price As Double = 0.0
    For Each item In breakfast
        price += Double.Parse(item.SubItems(1).Text)
    Next

    ' Output the price to TextBox1.
    TextBox1.Text = CType(price, String)
End Sub

注釈

SelectedItemsする前に、プロパティがアクセスされる場合は、プロパティにすべての項目は含まれません、ListViewハンドルを作成すると、通常に発生するときにListViewフォームでの表示に最初に読み込まれます。The SelectedItems property will not contain any items if the property is accessed before the ListView handle is created, which typically occurs when ListView is initially loaded for display in the form. ハンドルが作成されるかどうかを確認できる、IsHandleCreatedプロパティ。You can check to see if the handle is created with the IsHandleCreated property. ときに、MultiSelectプロパティに設定されてtrue、このプロパティで選択した項目を含むコレクションを返します、ListViewします。When the MultiSelect property is set to true, this property returns a collection containing the items that are selected in the ListView. 単一選択のListView、このプロパティの唯一の選択した項目を含むコレクションを返します、ListViewします。For a single-selection ListView, this property returns a collection containing the only selected item in the ListView. コレクション内の項目で実行できるタスクの詳細については、次を参照してください。ListView.SelectedListViewItemCollectionします。For more information on the tasks that can be performed with the items in the collection, see ListView.SelectedListViewItemCollection.

内のインデックス位置のコレクションを取得するかどうか、ListView.ListViewItemCollectionで選択されている項目のListViewコントロールを使用して、項目が選択されているのではなく、SelectedIndicesプロパティ。If you want to obtain a collection of the index positions within the ListView.ListViewItemCollection of the items that are selected in the ListView control, instead of the items that are selected, use the SelectedIndices property.

適用対象

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