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How to expand or collapse the nodes in a WinForms TreeViewAdv programmatically?

Platform: WinForms |
Control: TreeViewAdv

Expand or collapse nodes

TreeViewAdv has methods like ExpandAll and CollapseAll to expand and collapse all the nodes respectively. But to expand a particular node for a single level, you could use the Expand method in the TreeNodeAdv class. To collapse a node for a single level, set its Expanded property to false.


//Expands All Cloapsed node
//Expands the Node upto Single Level
//Collapses All Expanded Nodes
//Collapses a Node for Single Level
//Collapse the Node with all its Children nodes by Recursive method
private void CollapseNode(TreeNodeAdv node)
   foreach(TreeNodeAdv tna in node.Nodes)
   node.Expanded = false;


'Expands All Cloapsed node
'Expands the Node upto Single Level
'Collapses All Expanded Nodes
'Collapses a Node for Single Level
'Collapse the Node with all its Children nodes by Recursive method
Private Sub CollapseNode(ByVal node As TreeNodeAdv)
   For Each tna As TreeNodeAdv In node.Nodes
   Next tna
   node.Expanded = False
End Sub


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