TreeViewItem.Collapsed TreeViewItem.Collapsed TreeViewItem.Collapsed TreeViewItem.Collapsed Event

定義

IsExpanded プロパティの値が true から false に変更された場合に発生します。Occurs when the IsExpanded property changes from true to false.

public:
 event System::Windows::RoutedEventHandler ^ Collapsed;
public event System.Windows.RoutedEventHandler Collapsed;
member this.Collapsed : System.Windows.RoutedEventHandler 
Public Custom Event Collapsed As RoutedEventHandler 

次の例のイベント ハンドラーを割り当てる方法を示しています、CollapsedイベントをTreeViewItem、およびイベント ハンドラーを定義する方法。The following example shows how to assign an event handler for the Collapsed event to a TreeViewItem,and how to define the event handler.

<TreeViewItem Header="Employee1"
              Name="Employee1Data" 
              IsExpanded="True" 
              Collapsed="OnCollapsed" 
              Expanded="OnExpanded">
  <TreeViewItem Header="Work Days" 
                Name="EmployeeWorkDays"
                IsSelected="True">
    <TreeViewItem Header="Tuesday" />
    <TreeViewItem Header="Friday"/>
  </TreeViewItem>
</TreeViewItem>
<TreeViewItem Header="Employee2" 
              Name="Employee2Data">
  <TreeViewItem Header="Work Days" 
                Name="emp2WorkDays" 
                Selected="GetSchedule"
                Unselected="SetSchedule">
    <TreeViewItem Header="Monday" />
    <TreeViewItem Header="Wednesday"/>
  </TreeViewItem>
</TreeViewItem>
private void OnCollapsed(object sender, RoutedEventArgs e)
{
    //Perform actions when the TreeViewItem is collapsed
}
Private Sub OnCollapsed(ByVal sender As Object, ByVal e As RoutedEventArgs)
	'Perform actions when the TreeViewItem is collapsed
End Sub

注釈

このイベントが発生したときに、TreeViewItemが折りたたまれているは、子要素を非表示できるようにします。This event occurs when a TreeViewItem is collapsed so that child elements are hidden.

ルーティングされたイベント情報Routed Event Information

識別子フィールドです。Identifier field CollapsedEvent
ルーティング方法Routing strategy バブルBubbling
DelegateDelegate RoutedEventHandler

適用対象

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