TreeViewNode.Parent Property
Gets the immediate parent node to which the current node belongs.
Namespace: DevExpress.Web
Assembly: DevExpress.Web.v24.2.dll
NuGet Package: DevExpress.Web
#Declaration
public TreeViewNode Parent { get; }
#Property Value
Type | Description |
---|---|
Tree |
A Tree |
#Remarks
Use the Parent property to identify and access the immediate parent node which owns the current node.
#Example
The sample code below represents an ExpandedChanging event handler. The event handler prevents collapsing nodes if it has selected children in any generation.
<dx:ASPxTreeView ID="ASPxTreeView1" runat="server" DataSourceID="XmlDataSource1" AutoPostBack="True"
AllowSelectNode="True" OnExpandedChanging="ASPxTreeView1_ExpandedChanging" />
<asp:XmlDataSource ID="XmlDataSource1" runat="server" DataFile="~/App_Data/MenuTabbedMenu.xml"
XPath="/mainmenu/item"></asp:XmlDataSource>
protected void ASPxTreeView1_ExpandedChanging(object source, DevExpress.Web.ASPxTreeView.TreeViewNodeCancelEventArgs e) {
if ((e.Node.Expanded) && (ASPxTreeView1.SelectedNode != null)) {
TreeViewNode node = ASPxTreeView1.SelectedNode.Parent;
while (node != null) {
if (e.Node == node) {
e.Cancel = true;
break;
}
node = node.Parent;
}
}
}
#Related GitHub Examples
The following code snippet (auto-collected from DevExpress Examples) contains a reference to the Parent property.
Note
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