Hi Marcelo Oliveira Santos,
We have checked your query with TreeView component. Based on your request, we have considered your requirement as a feature request. Usually, Syncfusion will plan and implement the features based on feature rank, customer requested count and volume wish-list. We will implement and include this feature in any one of our upcoming releases.
You can track the status through the below portal link.
We appreciate your patience.
Regards,
Sowmiya.P