How to load TreeNodeAdv in WinForms MultiColumnTreeView during initialization time?

multiColumnTreeView1.BeginUpdate(Syncfusion.Windows.Forms.BeginUpdateOptions.Invalidate);
for (int parent = 0; parent < 10; parent++)
{
    TreeNodeAdv node = new TreeNodeAdv("parent");
    this.multiColumnTreeView1.Nodes.Add(node);
    for (int child = 0; child < 10; child++)
    {
        TreeNodeAdv node2 = new TreeNodeAdv("child");
        node.Nodes.Add(node2);
    }
}
this.multiColumnTreeView1.EndUpdate();

multiColumnTreeView1.BeginUpdate(Syncfusion.Windows.Forms.BeginUpdateOptions.Invalidate)
For parent As Integer = 0 To 9
     Dim node As New TreeNodeAdv("Parent node")
     Me.multiColumnTreeView1.Nodes.Add(node)
     For child As Integer = 0 To 9
 Dim node2 As New TreeNodeAdv("Child node")
 node.Nodes.Add(node2)
     Next child
Next parent
Me.multiColumnTreeView1.EndUpdate()