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TreeView::SelectedNode Property

Gets a TreeNode object that represents the selected node in the TreeView control.

Namespace:  System.Web.UI.WebControls
Assembly:  System.Web (in System.Web.dll)

[BrowsableAttribute(false)]
public:
property TreeNode^ SelectedNode {
	TreeNode^ get ();
}

Property Value

Type: System.Web.UI.WebControls::TreeNode
A TreeNode that represents the selected node in the TreeView.

The text of a node in the TreeView control can be in one of two modes: selection mode and navigation mode. By default, a node is in selection mode. To put a node into navigation mode, set the NavigateUrl property for the node to a value other than an empty string (""). To put a node into selection mode, set the NavigateUrl property for the node to empty string ("").

When a node is in selection mode, the user can select a node by clicking on the text in the node. Use the SelectedNode property to determine which node is selected in the TreeView control.

NoteNote:

A node cannot be selected when the TreeView control displays hyperlinks. When hyperlinks are displayed, the SelectedNode property always returns nullptr.

When the user selects a different node in the TreeView control by clicking the text in the new node, the SelectedNodeChanged event is raised, by default. You can specify a different event by setting the SelectAction property for the property. The following table lists the available options.

Selection action

Description

Expand

Toggles the node between expanded and collapsed. Raises the TreeNodeExpanded or TreeNodeCollapsed event, as appropriate.

None

Raises no events when a node is selected.

Select

Raises the SelectedNodeChanged event when a node is selected.

SelectExpand

Raises both the SelectedNodeChanged and TreeNodeExpanded events when a node is selected. Nodes are only expanded, never collapsed.

NoteNote:

The HoverNodeStyle is not rendered for a node with its SelectAction property set to TreeNodeSelectAction.None.

The following code example demonstrates how to use the SelectedNode property to determine the value of the selected node in the TreeView control.

No code example is currently available or this language may not be supported.

Windows 7, Windows Vista, Windows XP SP2, Windows XP Media Center Edition, Windows XP Professional x64 Edition, Windows XP Starter Edition, Windows Server 2008 R2, Windows Server 2008, Windows Server 2003, Windows Server 2000 SP4, Windows Millennium Edition, Windows 98

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.

.NET Framework

Supported in: 3.5, 3.0, 2.0
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