ListView.VirtualItemsSelectionRangeChanged ListView.VirtualItemsSelectionRangeChanged ListView.VirtualItemsSelectionRangeChanged ListView.VirtualItemsSelectionRangeChanged Event

定義

ListView が仮想モードのときに、ある範囲の項目の選択状態が変化すると発生します。Occurs when a ListView is in virtual mode and the selection state of a range of items has changed.

public:
 event System::Windows::Forms::ListViewVirtualItemsSelectionRangeChangedEventHandler ^ VirtualItemsSelectionRangeChanged;
public event System.Windows.Forms.ListViewVirtualItemsSelectionRangeChangedEventHandler VirtualItemsSelectionRangeChanged;
member this.VirtualItemsSelectionRangeChanged : System.Windows.Forms.ListViewVirtualItemsSelectionRangeChangedEventHandler 
Public Custom Event VirtualItemsSelectionRangeChanged As ListViewVirtualItemsSelectionRangeChangedEventHandler 

次のコード例では、このメンバーの使用を示します。The following code example demonstrates the use of this member. 例では、イベント ハンドラーが発生するときに報告、VirtualItemsSelectionRangeChangedイベント。In the example, an event handler reports on the occurrence of the VirtualItemsSelectionRangeChanged event. このレポートでは、イベントが発生してデバッグに役立つについて説明します。This report helps you to learn when the event occurs and can assist you in debugging. 複数のイベントまたは頻繁に発生するイベントを報告する、交換を検討MessageBox.ShowConsole.WriteLineまたはメッセージを複数行に追加TextBoxします。To report on multiple events or on events that occur frequently, consider replacing MessageBox.Show with Console.WriteLine or appending the message to a multiline TextBox.

コード例を実行する型のインスタンスを含むプロジェクトに貼り付けることListViewというListView1します。To run the example code, paste it into a project that contains an instance of type ListView named ListView1. イベント ハンドラーに関連付けられていることを確認し、VirtualItemsSelectionRangeChangedイベント。Then ensure that the event handler is associated with the VirtualItemsSelectionRangeChanged event.

private void ListView1_VirtualItemsSelectionRangeChanged(Object sender, ListViewVirtualItemsSelectionRangeChangedEventArgs e) {

System.Text.StringBuilder messageBoxCS = new System.Text.StringBuilder();
messageBoxCS.AppendFormat("{0} = {1}", "EndIndex", e.EndIndex );
messageBoxCS.AppendLine();
messageBoxCS.AppendFormat("{0} = {1}", "IsSelected", e.IsSelected );
messageBoxCS.AppendLine();
messageBoxCS.AppendFormat("{0} = {1}", "StartIndex", e.StartIndex );
messageBoxCS.AppendLine();
MessageBox.Show(messageBoxCS.ToString(), "VirtualItemsSelectionRangeChanged Event" );
}
Private Sub ListView1_VirtualItemsSelectionRangeChanged(sender as Object, e as ListViewVirtualItemsSelectionRangeChangedEventArgs) _ 
     Handles ListView1.VirtualItemsSelectionRangeChanged

    Dim messageBoxVB as New System.Text.StringBuilder()
    messageBoxVB.AppendFormat("{0} = {1}", "EndIndex", e.EndIndex)
    messageBoxVB.AppendLine()
    messageBoxVB.AppendFormat("{0} = {1}", "IsSelected", e.IsSelected)
    messageBoxVB.AppendLine()
    messageBoxVB.AppendFormat("{0} = {1}", "StartIndex", e.StartIndex)
    messageBoxVB.AppendLine()
    MessageBox.Show(messageBoxVB.ToString(),"VirtualItemsSelectionRangeChanged Event")

End Sub

注釈

場合、ListView仮想モードでは、ItemSelectionChangedイベントが発生します。If the ListView is not in virtual mode, the ItemSelectionChanged event will occur.

イベントの処理の詳細については、「処理とイベントの発生」を参照してください。For more information about handling events, see Handling and Raising Events.

適用対象

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