TreeViewItem::Expanded Event
.NET Framework (current version)
Occurs when the IsExpanded property changes from false to true.
Assembly: PresentationFramework (in PresentationFramework.dll)
This event occurs when a TreeViewItem is expanded so that its child elements are visible.
Identifier field | |
Routing strategy | Bubbling |
Delegate |
The following example shows how to assign an event handler for the Expanded event to a TreeViewItem and how to define the event handler in the code-behind.
<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>
.NET Framework
Available since 3.0
Silverlight
Available since 3.0
Available since 3.0
Silverlight
Available since 3.0
Show: