TreeListNodes Class

Represents a collection of TreeListNode objects in the TreeList component.

Namespace: DevExpress.XtraTreeList.Nodes

Assembly: DevExpress.XtraTreeList.v18.1.dll

Declaration

C#

public class TreeListNodes :
    IEnumerable<TreeListNode>,
    ICollection,
    IEnumerable

VB.NET

Public Class TreeListNodes
    Implements IEnumerable(Of TreeListNode),
               ICollection,
               IEnumerable

Related API Members

The following members accept/return TreeListNodes objects:

• CreateCustomNodeEventArgs.Owner
• CustomizeNewNodeFromOuterDataEventArgs.DestinationNodes
• GetCustomSummaryValueEventArgs.Nodes
• TreeList.Nodes
• TreeListNode.Nodes

Remarks

The TreeListNodes class allows you to add, remove and access individual nodes in the collection.

The node collection for the Tree List is accessed via the TreeList.Nodes property. These nodes are referred to as root nodes. Every node can have child nodes which are specified by the TreeListNode.Nodes property. Child nodes in turn refer to their parents.

Important

Instances of this class are not intended to be used as stand-alone objects.

Related GitHub Examples

The following code snippets (auto-collected from DevExpress Examples) contain references to the TreeListNodes class.

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#

how-to-create-custom-treelist-control-which-implements-a-web-style-comment-system-e3520/CS/TestMyTreeListForum/MyTreeListNode.cs#L27

protected internal MyTreeListNode(int id, TreeListNodes owner)
    : base(id, owner)

how-to-create-an-analog-of-gridlookupedit-with-treelist-in-a-popup-window-e4319/CS/RepositoryItemTreeListLookUpEdit.cs#L331

internal TreeListNode GetNodeByDisplayText(TreeListNodes nodes, string text, string member)
{

how-to-change-a-treelist-node-position-along-with-a-corresponding-records-position-in-the-da-e3577/CS/Q351285/Form1.cs#L44

}
private void UpdateNodesPositions(TreeListNodes nodes) {
    var ns = new List<TreeListNode>();

how-to-set-individual-node-heights-by-creating-a-treelist-descendant-t419316/CS/CustomTreeList-NodeHeight/Form1.cs#L49

protected override TreeListNode CreateNode(int nodeID, TreeListNodes owner, object tag) {
    return new MyTreeListNode(nodeID, owner);

how-to-implement-the-capability-to-choose-between-treelist-child-nodes-using-checkboxes-e1364/CS/WindowsApplication159/Form1.cs#L33

{
    TreeListNodes nodes = null;
    if (node.Level == 0)

VB.NET

how-to-create-custom-treelist-control-which-implements-a-web-style-comment-system-e3520/VB/TestMyTreeListForum/MyTreeListNode.vb#L30

Protected Friend Sub New(ByVal id As Integer, ByVal owner As TreeListNodes)
    MyBase.New(id, owner)

how-to-create-an-analog-of-gridlookupedit-with-treelist-in-a-popup-window-e4319/VB/RepositoryItemTreeListLookUpEdit.vb#L337

Friend Function GetNodeByDisplayText(ByVal nodes As TreeListNodes, ByVal text As String, ByVal member As String) As TreeListNode
    Dim nod As TreeListNode = Nothing

how-to-set-individual-node-heights-by-creating-a-treelist-descendant-t419316/VB/CustomTreeList-NodeHeight/Form1.vb#L49

Protected Overrides Function CreateNode(ByVal nodeID As Integer, ByVal owner As TreeListNodes, ByVal tag As Object) As TreeListNode
    Return New MyTreeListNode(nodeID, owner)

how-to-implement-the-capability-to-choose-between-treelist-child-nodes-using-checkboxes-e1364/VB/WindowsApplication159/Form1.vb#L29

Private Sub UncheckSiblingNodes(ByVal node As TreeListNode)
    Dim nodes As TreeListNodes = Nothing
    If node.Level = 0 Then

how-to-change-a-treelist-node-position-along-with-a-corresponding-records-position-in-the-da-e3577/VB/Q351285/Form1.vb#L46

End Sub
Private Sub UpdateNodesPositions(ByVal nodes As TreeListNodes)
    Dim ns = New List(Of TreeListNode)()

Inheritance

Object

TreeListNodes