what is node and nodes?

no

Nodes
Returns a reference to a collection of TreeView control Node objects.

Syntax
object.Nodes

The object placeholder represents an object expression that evaluates to an object.

Remarks
You can manipulate Node objects using standard collection methods (for example, the Add and Remove methods). You can access each element in the collection by its index, or by a unique key that you store in the Key property.
Example: load a picture box if node 3 of a treeview is selected.

Code:

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Private Sub TreeView1_NodeClick(ByVal Node As Node)
    frmTips.Caption = "Index = " & Node.Index & " Text:" & Node.Text

If Node.Index = 3 Then
    With Picture1
        .AutoSize = True
        .Visible = False
        .Picture = LoadPicture(App.Path & "/maple.jpg")
    End With
   
    End If

 End Sub

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