About select control,could it achieve multi-level

about select control,I read you office document, it is a drop-down list box,but it just one level to select,I have a demand,could you provide multi-level to select like tree-select,like that %40V10L060YKFT)8Z%255T%24MI_9
this.demand is very important for my project,so I hope you help me to achieve it! thank you!

Hello @fengshichao ,

Unfortunately, the gantt chart doesn’t have the built-in tree-select control, but you can implement it with the Custom inline editor functionality as described by the following link:

In this case, you will have to return some tree-structure HTML elements from the show property. Unfortunately, I can’t provide you any ready demo that realizes such functionality.