Skip to main content
Tab

ASPxTreeView.Nodes Property

Provides access to the root node child collection.

Namespace: DevExpress.Web

Assembly: DevExpress.Web.v24.2.dll

NuGet Package: DevExpress.Web

#Declaration

public TreeViewNodeCollection Nodes { get; }

#Property Value

Type Description
TreeViewNodeCollection

A TreeViewNodeCollection object that represents the collection of child nodes owned by the root node.

#Remarks

Use the Nodes property to access the root node child collection. The root node can be accessed via the ASPxTreeView.RootNode property.

For more information see the Node topic.

#Example

This example shows how to create a simple tree when the ASPxTreeView functions in unbound mode. New nodes are added to the ASPxTreeView via the TreeViewNodeCollection.Add method.

The image below shows the result:

TreeView - Creating nodes in code

<dx:ASPxTreeView ID="ASPxTreeView1" runat="server" AllowSelectNode="True">
</dx:ASPxTreeView>
<br />
<dx:ASPxTextBox ID="ASPxTextBox1" runat="server">
</dx:ASPxTextBox>
<br />
<dx:ASPxButton ID="ASPxButton1" runat="server" OnClick="ASPxButton1_Click" Text="Add Node">
</dx:ASPxButton>
public partial class _Default : System.Web.UI.Page {
    protected void Page_Load(object sender, EventArgs e) {
        if (!IsPostBack) {
         CreateTreeView(); 
        }
    }

    //Create treeview nodes. 
    void CreateTreeView() {
        string[] NodeNames = { "Inbox", "Outbox", "Sent Items", "Deleted Items", "Search Folder" };
        foreach (string Text in NodeNames) {
            ASPxTreeView1.Nodes.Add(Text);
        }
        ASPxTreeView1.Nodes.FindByText("Search Folder").Nodes.Add("Categorized Mail");

    }
    //Add a new child node to the selected node.
    protected void ASPxButton1_Click(object sender, EventArgs e) {
        if ((ASPxTreeView1.SelectedNode != null) && (ASPxTextBox1.Text != "")) {
            ASPxTreeView1.SelectedNode.Nodes.Add(ASPxTextBox1.Text);
        }
    }

}
See Also