ListView.SelectedIndexChanged 이벤트

list view 컨트롤에서 선택한 항목의 인덱스가 변경될 때 발생합니다.

네임스페이스: System.Windows.Forms
어셈블리: System.Windows.Forms(system.windows.forms.dll)

구문

‘선언
Public Event SelectedIndexChanged As EventHandler
‘사용 방법
Dim instance As ListView
Dim handler As EventHandler

AddHandler instance.SelectedIndexChanged, handler

public event EventHandler SelectedIndexChanged

public:
event EventHandler^ SelectedIndexChanged {
    void add (EventHandler^ value);
    void remove (EventHandler^ value);
}

/** @event */
public void add_SelectedIndexChanged (EventHandler value)

/** @event */
public void remove_SelectedIndexChanged (EventHandler value)

JScript에서는 이벤트를 사용할 수 있지만 새로 선언할 수는 없습니다.

설명

SelectedIndexChanged 이벤트는 선택한 항목의 인덱스 위치가 변경될 때마다 단일 선택 ListView 컨트롤내에서 발생합니다. 다중 선택 ListView 컨트롤내에서 이 이벤트는 항목이, 선택한 항목 목록에서 제거 또는 추가될 때마다 발생합니다. ListView 컨트롤에서 선택한 항목을 파악하려면 SelectedItems 속성을 사용하여 ListView.SelectedListViewItemCollection에 액세스합니다. 이 이벤트에 대한 이벤트 처리기를 만들어 ListView 컨트롤에서 선택한 항목을 변경할 때마다 작업을 수행할 수 있습니다.

이벤트 처리에 대한 자세한 내용은 이벤트 사용을 참조하십시오.

예제

다음 코드 예제에서는 SelectedItems, SelectedIndexChanged 이벤트, HeaderStyle 멤버 및 ListView.SelectedListViewItemCollection 클래스를 사용하는 방법을 보여 줍니다, 이 예제를 실행하려면 ListView1이라는 이름의 ListView 개체와 TextBox1이라는 이름의 TextBox가 들어 있는 폼에 다음 코드를 붙여넣습니다. 폼의 생성자나 Load 메서드에서 InitializeListView 메서드를 호출합니다. 이 예제에서는 이벤트 처리기가 SelectedIndexChanged 이벤트와 올바르게 연결되어 었어야 합니다.

    ' 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.
    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

 // 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);
    }
    

...
   // 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();
    }

   // 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 );
   }

...
   // 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();
   }

    // 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.set_BackColor(
            System.Drawing.SystemColors.get_Control());
        this.listView1.set_Dock(System.Windows.Forms.DockStyle.Top);
        this.listView1.set_Location(new System.Drawing.Point(0, 0));
        this.listView1.set_Name("listView1");
        this.listView1.set_Size(new System.Drawing.Size(292, 130));
        this.listView1.set_TabIndex(0);
        this.listView1.set_View(System.Windows.Forms.View.Details);
        this.listView1.set_MultiSelect(true);
        this.listView1.set_HideSelection(false);
        this.listView1.set_HeaderStyle(ColumnHeaderStyle.Nonclickable);

        ColumnHeader columnHeader1 = new ColumnHeader();
        columnHeader1.set_Text("Breakfast Item");
        columnHeader1.set_TextAlign(HorizontalAlignment.Left);
        columnHeader1.set_Width(146);

        ColumnHeader columnHeader2 = new ColumnHeader();
        columnHeader2.set_Text("Price Each");
        columnHeader2.set_TextAlign(HorizontalAlignment.Center);
        columnHeader2.set_Width(142);

        this.listView1.get_Columns().Add(columnHeader1);
        this.listView1.get_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.get_Length(); count++) {
            ListViewItem listItem = new ListViewItem(
                foodList.get_Item(count).ToString());
            listItem.get_SubItems().Add(foodPrice.get_Item(count).ToString());
            listView1.get_Items().Add(listItem);
        }
        this.get_Controls().Add(listView1);
    } //InitializeListView

...
    // 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.get_SelectedItems();

        double price = 0.0;
        for (int iCtr = 0; iCtr < breakfast.get_Count(); iCtr++) {
            ListViewItem item = breakfast.get_Item(iCtr);
            price += System.Double.Parse(item.get_SubItems().get_Item(1).
                get_Text().ToString());
        }
        // Output the price to textBox1.
        textBox1.set_Text(System.Convert.ToString(price));
    } //listView1_SelectedIndexChanged_UsingItems

플랫폼

Windows 98, Windows 2000 SP4, Windows CE, Windows Millennium Edition, Windows Mobile for Pocket PC, Windows Mobile for Smartphone, Windows Server 2003, Windows XP Media Center Edition, Windows XP Professional x64 Edition, Windows XP SP2, Windows XP Starter Edition

.NET Framework에서 모든 플래폼의 모든 버전을 지원하지는 않습니다. 지원되는 버전의 목록은 시스템 요구 사항을 참조하십시오.

버전 정보

.NET Framework

2.0, 1.1, 1.0에서 지원

.NET Compact Framework

2.0, 1.0에서 지원

참고 항목

참조

ListView 클래스
ListView 멤버
System.Windows.Forms 네임스페이스
OnSelectedIndexChanged
EventHandler
ListView.SelectedIndices 속성
ListView.SelectedItems 속성