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In your example, your nodes already have children in the file. How can you trick the TreeList to display an expand icon if the node doesn't have children nodes yet? The children nodes will be loaded on demand when the expand icon is pressed. Is there a way to tell the Treelist that this node has children vs is a leaf node?
Thanks,
Jacky
Filip
Telerik team
commented on 17 Jul 2023, 03:38 PM
Hi, Jacky,
A possible way to trick the TreeList to display the expand icon without any children would be to set the subItemsField to an empty object, the following demo can be used as a reference: