TreeListNode.Level Property

Returns the nesting level of a node.

Namespace: DevExpress.XtraTreeList.Nodes

Assembly: DevExpress.XtraTreeList.v19.2.dll

Declaration

C#

[Browsable(false)]
[DXCategory("Layout")]
public int Level { get; }

VB.NET

<Browsable(False)>
<DXCategory("Layout")>
Public ReadOnly Property Level As Integer

Property Value

Type	Description
Int32	The nesting level of a node.

Remarks

The nesting level determines how many nodes you must expand to reach the current node from the root. Topmost nodes in the Tree List are referred to as root tree nodes. The Level of root nodes is zero. The Level of root node children is 1 etc.

The following image displays levels with different colors.

Related GitHub Examples

The following code snippets (auto-collected from DevExpress Examples) contain references to the Level 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#

how-to-implement-excel-style-tree-filtering-in-a-filter-popup-t143068/CS/RangeDate/MyGridControl/MyDateFilterPopup.cs#L146

childCheck = true;
if (childNode.Level == 1)
{

how-to-implement-the-capability-to-choose-between-treelist-child-nodes-using-checkboxes-e1364/CS/WindowsApplication159/Form1.cs#L34

TreeListNodes nodes = null;
if (node.Level == 0)
    nodes = treeList1.Nodes;

Reporting_winforms-eud-how-to-create-a-control-template-gallery-with-reusable-control-sets-t341218/CS/ControlTemplateGallerySample/ControlTemplateGallery/TemplateUserControl.cs#L40

if(node.Level == 0 && ShowMessage("Are you sure you want to delete this category?", "Confirm Deleting") == DialogResult.Yes) {
    string categoryName = Convert.ToString(node.GetValue(0));

how-to-implement-the-group-level-style-feature-in-the-treelist-e2368/CS/Q220534/Form1.cs#L40

if (currentNode.HasChildren)
    rects.Add(currentNode.Level, new Rectangle(bounds.Right - viewInfo.RC.LevelWidth, bounds.Y, viewInfo.RC.LevelWidth, bounds.Height));
bounds = new Rectangle(bounds.Location, new Size(bounds.Width - viewInfo.RC.LevelWidth, bounds.Height));

how-to-show-checkboxes-for-only-a-specific-level-e2810/CS/WindowsApplication1/Form1.cs#L77

        return true;
    return node.Level == Level;
}

VB.NET

how-to-implement-excel-style-tree-filtering-in-a-filter-popup-t143068/VB/RangeDate/MyGridControl/MyDateFilterPopup.vb#L124

childCheck = True
If childNode.Level = 1 Then
    treelist.NodesIterator.DoLocalOperation(Sub(childChildNode)

how-to-implement-the-capability-to-choose-between-treelist-child-nodes-using-checkboxes-e1364/VB/WindowsApplication159/Form1.vb#L30

Dim nodes As TreeListNodes = Nothing
If node.Level = 0 Then
    nodes = treeList1.Nodes

Reporting_winforms-eud-how-to-create-a-control-template-gallery-with-reusable-control-sets-t341218/VB/ControlTemplateGallerySample/ControlTemplateGallery/TemplateUserControl.vb#L44

If node.Level = 0 AndAlso ShowMessage("Are you sure you want to delete this category?", "Confirm Deleting") = DialogResult.Yes Then
    Dim categoryName As String = Convert.ToString(node.GetValue(0))

how-to-implement-the-group-level-style-feature-in-the-treelist-e2368/VB/Q220534/Form1.vb#L39

If currentNode.HasChildren Then
    rects.Add(currentNode.Level, New Rectangle(bounds.Right - viewInfo.RC.LevelWidth, bounds.Y, viewInfo.RC.LevelWidth, bounds.Height))
End If

how-to-show-checkboxes-for-only-a-specific-level-e2810/VB/WindowsApplication1/Form1.vb#L91

    End If
    Return node.Level = Level
End Function