ListView.ItemCheck ListView.ItemCheck ListView.ItemCheck ListView.ItemCheck Event

정의

항목의 선택 상태가 변경될 때 발생합니다.Occurs when the check state of an item changes.

public:
 event System::Windows::Forms::ItemCheckEventHandler ^ ItemCheck;
public event System.Windows.Forms.ItemCheckEventHandler ItemCheck;
member this.ItemCheck : System.Windows.Forms.ItemCheckEventHandler 
Public Custom Event ItemCheck As ItemCheckEventHandler 

예제

다음 코드 예제에서는 체크 ListView 처리 하는 컨트롤을 ItemCheck 이벤트입니다.The following code example demonstrates a checked ListView control that handles the ItemCheck event. 메서드를 사용 하는 ItemCheckEventArgs.CurrentValueItemCheckEventArgs.Index 속성을 검색 하 고 선택한 메뉴 항목의 가격을 기록 합니다.The method uses the ItemCheckEventArgs.CurrentValue and ItemCheckEventArgs.Index properties to retrieve and tally the price of the menu items selected. 이 예제를 실행 하려면 다음 코드를 포함 하는 폼에 붙여넣습니다를 ListView 라는 ListView1TextBox 라는 Textbox1합니다.To run this example, paste the following code into a form containing a ListView named ListView1 and a TextBox named Textbox1. 호출 된 InitializeListView 폼의 생성자에서 메서드 또는 Load 메서드.Call the InitializeListView method from the form's constructor or Load method. 했는지를 ItemCheck 이벤트가 예제의 이벤트 처리기와 연결 됩니다.Ensure that the ItemCheck event is associated with the event handler in this example.

void InitializeListView()
{
   this->ListView1 = gcnew System::Windows::Forms::ListView;
   
   // Set properties such as BackColor and DockStyle and Location.
   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->Size = System::Drawing::Size( 292, 130 );
   this->ListView1->View = System::Windows::Forms::View::Details;
   this->ListView1->HideSelection = false;
   
   // Allow the user to select multiple items.
   this->ListView1->MultiSelect = true;
   
   // Show CheckBoxes in the ListView.
   this->ListView1->CheckBoxes = true;
   
   //Set the column headers and populate the columns.
   ListView1->HeaderStyle = ColumnHeaderStyle::Nonclickable;
   ColumnHeader^ columnHeader1 = gcnew ColumnHeader;
   columnHeader1->Text = "Breakfast Choices";
   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","2.79","2.09","2.69"};
   int count;
   
   // Members are added one at a time, so call BeginUpdate to ensure 
   // the list is painted only once, rather than as each list item is added.
   ListView1->BeginUpdate();
   for ( count = 0; count < foodList->Length; count++ )
   {
      ListViewItem^ listItem = gcnew ListViewItem( foodList[ count ] );
      listItem->SubItems->Add( foodPrice[ count ] );
      ListView1->Items->Add( listItem );
   }
   
   //Call EndUpdate when you finish adding items to the ListView.
   ListView1->EndUpdate();
   this->Controls->Add( this->ListView1 );
}
private void InitializeListView()
{
	this.ListView1 = new System.Windows.Forms.ListView();

	// Set properties such as BackColor and DockStyle and Location.
	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.Size = new System.Drawing.Size(292, 130);
	this.ListView1.View = System.Windows.Forms.View.Details;
	this.ListView1.HideSelection = false;

	// Allow the user to select multiple items.
	this.ListView1.MultiSelect = true;

	// Show CheckBoxes in the ListView.
	this.ListView1.CheckBoxes = true;
	
	//Set the column headers and populate the columns.
	ListView1.HeaderStyle = ColumnHeaderStyle.Nonclickable;
	
	ColumnHeader columnHeader1 = new ColumnHeader();
	columnHeader1.Text = "Breakfast Choices";
	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", 
		"2.79", "2.09", "2.69"};
	
	int count;

	// Members are added one at a time, so call BeginUpdate to ensure 
	// the list is painted only once, rather than as each list item is added.
	ListView1.BeginUpdate();

	for(count = 0; count < foodList.Length; count++)
	{
		ListViewItem listItem = new ListViewItem(foodList[count]);
		listItem.SubItems.Add(foodPrice[count]);
		ListView1.Items.Add(listItem);
	}

	//Call EndUpdate when you finish adding items to the ListView.
	ListView1.EndUpdate();
	this.Controls.Add(this.ListView1);
}
Private Sub InitializeListView()
    Me.ListView1 = New System.Windows.Forms.ListView

    ' Set properties such as BackColor, Location and Size
    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.Size = New System.Drawing.Size(292, 130)
    Me.ListView1.View = System.Windows.Forms.View.Details
    Me.ListView1.HideSelection = False

    ' Allow user to select multiple items.
    Me.ListView1.MultiSelect = True

    ' Show check boxes in the ListView.
    Me.ListView1.CheckBoxes = True

    'Set the column headers and populate the columns.
    ListView1.HeaderStyle = ColumnHeaderStyle.Nonclickable
    Dim columnHeader1 As New ColumnHeader
    With columnHeader1
        .Text = "Breakfast Choices"
        .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", _
        "2.79", "2.09", "2.69"}
    Dim count As Integer

    ' Members are added one at a time, so call BeginUpdate to ensure 
    ' the list is painted only once, rather than as each list item is added.
    ListView1.BeginUpdate()

    For count = 0 To foodList.Length - 1
        Dim listItem As New ListViewItem(foodList(count))
        listItem.SubItems.Add(foodPrice(count))
        ListView1.Items.Add(listItem)
    Next

    'Call EndUpdate when you finish adding items to the ListView.
    ListView1.EndUpdate()
    Me.Controls.Add(Me.ListView1)
End Sub
double price;

// Handles the ItemCheck event. The method uses the CurrentValue
// property of the ItemCheckEventArgs to retrieve and tally the  
// price of the menu items selected.  
void ListView1_ItemCheck1( Object^ /*sender*/, System::Windows::Forms::ItemCheckEventArgs^ e )
{
   if ( e->CurrentValue == CheckState::Unchecked )
   {
      price += Double::Parse( this->ListView1->Items[ e->Index ]->SubItems[ 1 ]->Text );
   }
   else
   if ( (e->CurrentValue == CheckState::Checked) )
   {
      price -= Double::Parse( this->ListView1->Items[ e->Index ]->SubItems[ 1 ]->Text );
   }


   
   // Output the price to TextBox1.
   TextBox1->Text = price.ToString();
}
double price = 0.0;

// Handles the ItemCheck event. The method uses the CurrentValue
// property of the ItemCheckEventArgs to retrieve and tally the  
// price of the menu items selected.  
private void ListView1_ItemCheck1(object sender, 
	System.Windows.Forms.ItemCheckEventArgs e)
{
	if (e.CurrentValue==CheckState.Unchecked)
	{
		price += Double.Parse(
			this.ListView1.Items[e.Index].SubItems[1].Text);
	}
	else if((e.CurrentValue==CheckState.Checked))
	{
		price -= Double.Parse(
			this.ListView1.Items[e.Index].SubItems[1].Text);
	}

	// Output the price to TextBox1.
	TextBox1.Text = price.ToString();
}
Dim price As Double = 0.0

' Handles the ItemChecked event. The method uses the CurrentValue property 
' of the ItemCheckEventArgs to retrieve and tally the price of the menu 
' items selected.  
Private Sub ListView1_ItemCheck1(ByVal sender As Object, _
    ByVal e As System.Windows.Forms.ItemCheckEventArgs) _
    Handles ListView1.ItemCheck

    If (e.CurrentValue = CheckState.Unchecked) Then
        price += Double.Parse( _
        Me.ListView1.Items(e.Index).SubItems(1).Text)
    ElseIf (e.CurrentValue = CheckState.Checked) Then
        price -= Double.Parse( _
            Me.ListView1.Items(e.Index).SubItems(1).Text)
    End If

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

End Sub

설명

CheckBoxes 속성으로 설정 되어 있어야의 각 항목 옆에 표시할 확인란에 대 한 true는 ListView 제어 합니다.The CheckBoxes property must be set to true in order for check boxes to be displayed next to each item in the ListView control. ItemCheck 이벤트가 발생할 때 또는 항목의 선택 상태가 변경 될 때 합니다 CheckBoxes 속성이 true합니다.The ItemCheck event occurs when the check state of an item changes or when the CheckBoxes property is set to true. 에 대 한 이벤트 처리기를 만들 수 있습니다 합니다 ItemCheck 항목 체크 인 될 때마다 항목의 아이콘 또는 다른 애플리케이션 관련 작업의 상태를 변경 하는 등 작업을 수행 하는 이벤트를 ListView 제어 합니다.You can create an event handler for the ItemCheck event to perform tasks such as changing the state of an item's icon or another application-specific task each time an item is checked in the ListView control.

참고

창 핸들에 만들지 않은 경우 시기는 ItemCheck 이벤트가 발생 하면 이벤트 지연 됩니다.If the window handle has not been created when the ItemCheck event is raised, the event will be delayed. 만들어지면 창 핸들 (폼 표시 됨) 하는 경우 지연 된 ItemCheck 이벤트가 발생 합니다.Once the window handle is created (when the form is shown), any delayed ItemCheck events will be raised. 자세한 내용은 HandleCreated을 참조하세요.For more information, see HandleCreated.

이벤트 처리에 대한 자세한 내용은 이벤트 처리 및 발생 을 참조하십시오.For more information about handling events, see Handling and Raising Events.

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