TreeListNode.ChildNodes Property

Gets a collection of nodes owned by the current node.

Namespace: DevExpress.Web.ASPxTreeList

Assembly: DevExpress.Web.ASPxTreeList.v18.2.dll

Declaration

C#

public TreeListNodeCollection ChildNodes { get; }

VB.NET

Public ReadOnly Property ChildNodes As TreeListNodeCollection

Property Value

Type	Description
TreeListNodeCollection	A TreeListNodeCollection object that represents the collection of child nodes.

Remarks

For detailed information, see Nodes.

Example

This example shows how to create a simple tree when the ASPxTreeList functions in unbound mode. New nodes are created and added to the ASPxTreeList via the ASPxTreeList.AppendNode method.

Columns can be created at design time or in code. For detailed information, see Creating Columns and Binding Them to Data Fields.

The image below shows the result:

C#

using DevExpress.Web.ASPxTreeList;

protected void Page_Load(object sender, EventArgs e) {
    CreateTree();
}

void CreateTree() {
    TreeListNode parentNode = CreateNodeCore(0, "<b>Local Folders</b>", null);
    CreateNodeCore(1, "Inbox", parentNode);
    CreateNodeCore(2, "Outbox", parentNode);
    CreateNodeCore(3, "Sent Items", parentNode);
    CreateNodeCore(4, "Deleted Items", parentNode);
    TreeListNode searchFolders = CreateNodeCore(5, "<b>Search Folders</b>", null);
    CreateNodeCore(6, "Categorized Mail", searchFolders);
    CreateNodeCore(7, "Large Mail", searchFolders);
}

TreeListNode CreateNodeCore(int key, string text, TreeListNode parentNode) {
    TreeListNode node = ASPxTreeList1.AppendNode(key, parentNode);
    node["Folder"] = text;
    return node;
}

VB.NET

Imports DevExpress.Web.ASPxTreeList

Protected Sub Page_Load(ByVal sender As Object, ByVal e As System.EventArgs) Handles Me.Load
    CreateTree()
End Sub

Sub CreateTree()
    Dim parentNode As TreeListNode = CreateNodeCore(0, "<b>Local Folders</b>", Nothing)
    CreateNodeCore(1, "Inbox", parentNode)
    CreateNodeCore(2, "Outbox", parentNode)
    CreateNodeCore(3, "Sent Items", parentNode)
    CreateNodeCore(4, "Deleted Items", parentNode)
    Dim searchFolders As TreeListNode = CreateNodeCore(5, "<b>Search Folders</b>", Nothing)
    CreateNodeCore(6, "Categorized Mail", searchFolders)
    CreateNodeCore(7, "Large Mail", searchFolders)
End Sub

Function CreateNodeCore(ByVal key As Integer, ByVal nodeText As String,_
ByVal parentNode As TreeListNode) As TreeListNode
    Dim node As TreeListNode = ASPxTreeList1.AppendNode(key, parentNode)
    node("Folder") = nodeText
    Return node
End Function

ASPX

<dxwtl:ASPxTreeList ID="ASPxTreeList1" runat="server" AutoGenerateColumns="False"
    Width="300px">
    <Columns>
        <dxwtl:TreeListTextColumn FieldName="Folder" VisibleIndex="0">
            <PropertiesTextEdit EncodeHtml="False">
            </PropertiesTextEdit>
        </dxwtl:TreeListTextColumn>
    </Columns>
</dxwtl:ASPxTreeList>

Related GitHub Examples

The following code snippet (auto-collected from DevExpress Examples) contains a reference to the ChildNodes property.

Note

The algorithm used to collect these code examples remains a work in progress. Accordingly, the links and snippets below may produce inaccurate results. If you encounter an issue with code examples below, please use the feedback form on this page to report the issue.

C#

multi-node-editing-via-a-datacell-template-e1314/CS/WebSite/Default.aspx.cs#L30

    UpdateNode(node);
    if (node.HasChildren) UpdateNodes(node.ChildNodes);
}

VB.NET

multi-node-editing-via-a-datacell-template-e1314/VB/WebSite/Default.aspx.vb#L27

If node.HasChildren Then
    UpdateNodes(node.ChildNodes)
End If