I tried by making tree.makeSearch(id, cIndex) but is is not working, along with this I also need to do previous and Next search for the DHTMLXtree grid.
I also tried by attaching header into grid but that is not working.
If you have problems with makeSearch api - please provide demo link ( you can send pm ) or provide any kind of sample where issue can be reconstructed.
As for next - previos search, there is no built in functionality it possible to use search api to get full list of matches and select from it which row to highlight, based on current selection.
Get a guaranteed answer from DHTMLX technical support team
under the most suitable support plan