Thank you for writing.
There is two main scenarios for populating RadTreeView
. It depends on LoadOnDemand
property. If LoadOnDemand
, then all nodes are created and RadTreeView
automatically adds plus/minus symbol only for nodes that have children ones. If you have set LoadOnDemand = true
, then plus/minus symbol is added to all nodes, because RadTreeView
loads only visible ones and it doesn't know which of them have children. Children nodes load when the user in clicks on the expand symbol (on demand). You can remove expand symbol in run-time for the certain nodes, that you know they have not children, by setting theirs LoadedOnDemand
property to true
|radTreeView1.Nodes.LoadedOnDemand = true;
If you have other questions, do not hesitate to contact me again.
the Telerik team
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