Updated: February 2009
Represents a control that displays hierarchical data in a tree structure that has items that can expand and collapse.
Assembly: PresentationFramework (in PresentationFramework.dll)
XMLNS for XAML: http://schemas.microsoft.com/winfx/2006/xaml/presentation, http://schemas.microsoft.com/netfx/2007/xaml/presentation
The following illustration shows a simple .
The contents of a are TreeViewItem controls that can contain rich content, such as Button and Image controls. A TreeViewItem can contain one or more TreeViewItem objects as its descendants. A is defined as a hierarchy of TreeViewItem objects.
A can populate its tree by binding to a data source and using HierarchicalDataTemplate objects. Examples of data sources include XmlDataProvider and ObservableCollection<T> objects. For an example, see Displaying Hierarchical Data Sample.
Displaying a large number of items may cause performance issues. See Optimizing Performance: Controls for more information. To improve the performance of a , see How to: Improve the Performance of a TreeView.
Dependency properties for this control might be set by the control’s default style. If a property is set by a default style, the property might change from its default value when the control appears in the application. The default style is determined by which desktop theme is used when the application is running. For more information, see Themes.
For more information about the control, see the TreeView Overview.
The following example shows how to create a .
<TreeView> <TreeViewItem Header="Employee1"> <TreeViewItem Header="Jesper"/> <TreeViewItem Header="Aaberg"/> <TreeViewItem Header="12345"/> </TreeViewItem> <TreeViewItem Header="Employee2"> <TreeViewItem Header="Dominik"/> <TreeViewItem Header="Paiha"/> <TreeViewItem Header="98765"/> </TreeViewItem> </TreeView>
|How to: Create Simple or Complex TreeViews||This example shows how to create simple or complex controls.|
|How to: Use SelectedValue, SelectedValuePath, and SelectedItem||This example shows how to use the SelectedValue and SelectedValuePath properties to specify a value for the SelectedItem of a .|
Windows 7, Windows Vista, Windows XP SP2, Windows Server 2008 R2, Windows Server 2008, Windows Server 2003
The .NET Framework and .NET Compact Framework do not support all versions of every platform. For a list of the supported versions, see .NET Framework System Requirements.