TreeListNode.FirstNode Property

Gets the first child node.

Namespace: DevExpress.XtraTreeList.Nodes

Assembly: DevExpress.XtraTreeList.v23.2.dll

NuGet Packages: DevExpress.Win.Navigation, DevExpress.Win.TreeList

Declaration

C#

[Browsable(false)]
public virtual TreeListNode FirstNode { get; }

VB.NET

<Browsable(False)>
Public Overridable ReadOnly Property FirstNode As TreeListNode

Property Value

Type	Description
TreeListNode	A TreeListNode object which represents the first child node. null (Nothing in Visual Basic) if the current node has no child nodes.

Remarks

Each node can have children. The child nodes are contained within their parent’s TreeListNode.Nodes collection. The FirstNode method returns the first element in this collection.

Related GitHub Examples

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

spreadsheet-document-api-examples-part2/CS/SpreadsheetDocServerAPIPart2/Form1.cs#L144

    if (treeList1.Nodes.Count > 0)
        treeList1.FocusedNode = treeList1.MoveFirst().FirstNode;
}

spreadsheet-document-api-chart-examples/CS/SpreadsheetDocServerChartAPISamples/Form1.cs#L201

    if (treeList1.Nodes.Count > 0)
        treeList1.FocusedNode = treeList1.MoveFirst().FirstNode;
}

winforms-richeditcontrol-common-api/CS/RichEditAPISample/Form1.cs#L460

    if(treeList1.Nodes.Count > 0)
        treeList1.FocusedNode = treeList1.MoveFirst().FirstNode;
}

winforms-spreadsheet-pivot-table-api/CS/SpreadsheetPivotTableExamples/Form1.cs#L186

    if (treeList1.Nodes.Count > 0)
        treeList1.FocusedNode = treeList1.MoveFirst().FirstNode;
}

spreadsheet-document-api-pivot-table-examples/CS/SpreadsheetDocServerPivotAPI/Form1.cs#L159

    if (treeList1.Nodes.Count > 0)
        treeList1.FocusedNode = treeList1.MoveFirst().FirstNode;
}

VB.NET

spreadsheet-document-api-examples-part2/VB/SpreadsheetDocServerAPIPart2/Form1.vb#L128

    treeList1.ExpandAll()
    If treeList1.Nodes.Count > 0 Then treeList1.FocusedNode = treeList1.MoveFirst().FirstNode
End Sub

spreadsheet-document-api-chart-examples/VB/SpreadsheetDocServerChartAPISamples/Form1.vb#L191

If treeList1.Nodes.Count > 0 Then
    treeList1.FocusedNode = treeList1.MoveFirst().FirstNode
End If

winforms-richeditcontrol-common-api/VB/RichEditAPISample/Form1.vb#L455

If treeList1.Nodes.Count > 0 Then
    treeList1.FocusedNode = treeList1.MoveFirst().FirstNode
End If

winforms-spreadsheet-pivot-table-api/VB/SpreadsheetPivotTableExamples/Form1.vb#L177

If treeList1.Nodes.Count > 0 Then
    treeList1.FocusedNode = treeList1.MoveFirst().FirstNode
End If

spreadsheet-document-api-pivot-table-examples/VB/SpreadsheetDocServerPivotAPI/Form1.vb#L150

If treeList1.Nodes.Count > 0 Then
    treeList1.FocusedNode = treeList1.MoveFirst().FirstNode
End If